Nov 14, 2026 · San Antonio
Battle of Leon Creek: 20-Miles, 13.1, 10-Mile, 5K
Battle of Leon Creek: 20-Miles, 13.1, 10-Mile, 5K
Half Closed
13.1 miles in San Antonio
San Antonio Half Marathons: 2026–27 Calendar
Updated Oct 11, 2026. Races and fees from RunSignup, refreshed every morning. Always confirm details on the official race page.
50 upcoming half marathons in San Antonio are on RunSignup right now, 52 halves across San Antonio & South Texas. The next one in the city is Halloween Trick or Trot Run 5K/10K/13.1 SAN ANTONIO on Oct 31, 2026. April 2027 is the busiest month, with 10. The two biggest are the San Antonio Marathon’s half on Sunday, December 6, 2026, and the San Antonio RoadRunners’ Fiesta Mission Run half on April 18, 2027.
- In San Antonio
- 50
- With suburbs
- 51
- Whole region
- 52
- Registration open
- 45
Standalone half marathons around San Antonio
One-off road half marathons with their own name on the start line, in date order. Summaries come from each organizer's RunSignup listing; "from" is the cheapest current in-person half marathon entry. Open a race for events, fees and start times.
Apr 25, 2027 · San Antonio
Siesta Half Marathon
Siesta Half Marathon
Half Closed
Apr 25, 2027 · Helotes
Texas Tough Half Marathon & 5k
We are bringing back our Texas Tough With a Trully Tough Course in San Antonio Tx. We will be having something new and challenging for you. The Race will start at…
5K Half Closed
May 9, 2027 · San Antonio
Run This Mother Half Marathon, 10k, 5K
Join us for a heartwarming celebration of Mother’s Day at the scenic Comanche Park, where we’ll kick off our “Run This Mother” 5K & Half Marathon on On Mothers Day. This…
Kids 5K 10K Half Fun Run from $75 Open
Every upcoming half marathon in San Antonio
50 races inside San Antonio with a half marathon on RunSignup. "From" is the cheapest current in-person half marathon entry; race names open our full listing with events, fees and start times.
October 2026 2 half marathons
| Date | Race | City | Distances | From | Registration |
|---|---|---|---|---|---|
| Sat, Oct 31, 2026 | Halloween Trick or Trot Run 5K/10K/13.1 SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $50 | Register |
| Sat, Oct 31, 2026 | PB&J Fuel Run 5K/10K/13.1 SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $50 | Register |
November 2026 6 half marathons
| Date | Race | City | Distances | From | Registration |
|---|---|---|---|---|---|
| Sat, Nov 14, 2026 | Battle of Leon Creek: 20-Miles, 13.1, 10-Mile, 5K | San Antonio | Half | — | Closed |
| Sat, Nov 14, 2026 | Run for Mental Health 5K/10K/13.1 SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $50 | Register |
| Sat, Nov 14, 2026 | Veterans Day Freedom Run 5K/10K/13.1 SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $50 | Register |
| Sat, Nov 28, 2026 | Coffee Lovers Run 5K/10K/13.1 SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $45 | Register |
| Sat, Nov 28, 2026 | Thanksgiving Gobble Trot Run 5K/10K/13.1 SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $45 | Register |
| Sun, Nov 29, 2026 | Turkey Trails - San Antonio Trail | San Antonio | Kids, 5K, 10K, Half, Trail | $66 | Register |
December 2026 6 half marathons
| Date | Race | City | Distances | From | Registration |
|---|---|---|---|---|---|
| Fri, Dec 4, 2026 | 2026 - San Antonio Marathon | San Antonio | 5K, Half, Marathon | — | Closed |
| Fri, Dec 4, 2026 | 2026 San Antonio Marathon | San Antonio | 5K, Half, Marathon | $169 | Register |
| Sat, Dec 12, 2026 | Run for Breast Cancer 5K/10K/13.1 SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $45 | Register |
| Sat, Dec 12, 2026 | Sunrise Marathon 5K/10K/13.1 SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $45 | Register |
| Sat, Dec 26, 2026 | A Merry Christmas Run 5K/10K/13.1 SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $45 | Register |
| Sat, Dec 26, 2026 | New Year's Run 5K/10K/13.1 SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $45 | Register |
January 2027 6 half marathons
| Date | Race | City | Distances | From | Registration |
|---|---|---|---|---|---|
| Sun, Jan 10, 2027 | Bigfoot Classic - San Antonio | San Antonio | Kids, 5K, 10K, Half | $49 | Register |
| Sat, Jan 16, 2027 | MLK Jr. Freedom Run 5K/10K/13.1 SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $45 | Register |
| Sat, Jan 16, 2027 | Sunrise Marathon 5K/10K/13.1 SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $45 | Register |
| Sat, Jan 30, 2027 | Coffee Lover Run SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $45 | Register |
| Sat, Jan 30, 2027 | Run for Donut SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $45 | Register |
| Sun, Jan 31, 2027 | Winter Dragon Race | San Antonio | Kids, 5K, 10K, Half | $80 | Register |
February 2027 4 half marathons
| Date | Race | City | Distances | From | Registration |
|---|---|---|---|---|---|
| Sat, Feb 13, 2027 | Run for Chocolate 5K/10K/13.1 SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $50 | Register |
| Sat, Feb 13, 2027 | Valentine's Day Run 5K/10K/13.1 SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $45 | Register |
| Sat, Feb 27, 2027 | Run For Mental Health SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $45 | Register |
| Sat, Feb 27, 2027 | Run Together Against Breast Cancer SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $45 | Register |
March 2027 4 half marathons
| Date | Race | City | Distances | From | Registration |
|---|---|---|---|---|---|
| Sun, Mar 14, 2027 | Rodeo Stampede - San Antonio | San Antonio | Kids, 5K, 10K, Half | $49 | Register |
| Sun, Mar 14, 2027 | Time to Paddy 5K/10K & Lucky 13.1 - San Antonio | San Antonio | Kids, 5K, 10K, Half | $62 | Register |
| Sat, Mar 20, 2027 | St. Paddy's Day Lucky Run 5K/10K/13.1 SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $45 | Register |
| Sat, Mar 20, 2027 | Sunrise Marathon 5K/10K/13.1 SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $45 | Register |
April 2027 9 half marathons
| Date | Race | City | Distances | From | Registration |
|---|---|---|---|---|---|
| Sun, Apr 4, 2027 | Spring Fling - San Antonio | San Antonio | Kids, 5K, 10K, Half | — | Register |
| Sat, Apr 10, 2027 | Run for PB&J 5k/10k/13.1 SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $45 | Register |
| Sat, Apr 10, 2027 | Sloth Run 5K/10K/13.1 SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $45 | Register |
| Sat, Apr 17, 2027 | DoNot Stop Half Marathon/5K/10K - San Antonio | San Antonio | Kids, 5K, 10K, Half | $62 | Register |
| Sat, Apr 17, 2027 | Running through the Decades Half Marathon - San Antonio | San Antonio | Kids, 5K, 10K, Half | $49 | Register |
| Sun, Apr 18, 2027 | SARR Fiesta Mission Run | San Antonio | Kids, 5K, 10K, Half, Fun Run | $88 | Register |
| Sat, Apr 24, 2027 | Coffee Lover Run SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $45 | Register |
| Sat, Apr 24, 2027 | Run for Donut SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $45 | Register |
| Sun, Apr 25, 2027 | Siesta Half Marathon | San Antonio | Half | — | Closed |
May 2027 5 half marathons
| Date | Race | City | Distances | From | Registration |
|---|---|---|---|---|---|
| Sat, May 8, 2027 | Run for Chocolate 5k/10k/13.1 SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $45 | Register |
| Sun, May 9, 2027 | Run This Mother Half Marathon, 10k, 5K | San Antonio | Kids, 5K, 10K, Half, Fun Run | $75 | Register |
| Sun, May 9, 2027 | The Wiener Run - San Antonio | San Antonio | Kids, 5K, 10K, Half | — | Register |
| Sun, May 23, 2027 | American Hero 25K Relay & Half Marathon | San Antonio | Kids, 5K, 10K, Half, Fun Run | $73 | Register |
| Sat, May 29, 2027 | Hometown Half Marathon/5K/10K - San Antonio | San Antonio | Kids, 5K, 10K, Half | $56 | Register |
June 2027 2 half marathons
| Date | Race | City | Distances | From | Registration |
|---|---|---|---|---|---|
| Sun, Jun 13, 2027 | Texas Sun Showdown Half Marathon, Relay & 5k | San Antonio | 5K, Half | $88 | Register |
| Sat, Jun 19, 2027 | Run Juneteenth Day 5K/10K/13.1 SAN ANTONIO | San Antonio | 5K, 10K, Half, Fun Run | $45 | Register |
July 2027 2 half marathons
| Date | Race | City | Distances | From | Registration |
|---|---|---|---|---|---|
| Sat, Jul 10, 2027 | Red, White and Blue Half Marathon - San Antonio | San Antonio | Kids, Half | $52 | Register |
| Sat, Jul 31, 2027 | Heatwave Half Marathon/5K/10K - San Antonio | San Antonio | Kids, 5K, 10K, Half | $56 | Register |
August 2027 1 half marathon
| Date | Race | City | Distances | From | Registration |
|---|---|---|---|---|---|
| Sat, Aug 7, 2027 | Remember the Alamo…Beer! 13.1, 13.1 Relay, 5k, or 10k | San Antonio | Half | — | Closed |
September 2027 3 half marathons
| Date | Race | City | Distances | From | Registration |
|---|---|---|---|---|---|
| Sun, Sep 5, 2027 | E-Dragon Run Festival | San Antonio | 5K, 10K, Half | — | Closed |
| Sat, Sep 18, 2027 | Heroes and Villains Half Marathon- San Antonio | San Antonio | Kids, 5K, 10K, Half | $49 | Register |
| Sun, Sep 26, 2027 | Golden Harvest Half Marathon & 5K/10K - San Antonio | San Antonio | Kids, 5K, 10K, Half | $56 | Register |
Registration links go to RunSignup; Lone Star Strides may earn a referral commission at no cost to you.
More half marathons in the San Antonio area and San Antonio & South Texas
2 more races in the region have a half marathon, 1 of them in San Antonio's suburbs. The filters above apply here too.
January 2027 1 half marathon
| Date | Race | City | Distances | From | Registration |
|---|---|---|---|---|---|
| Sat, Jan 9, 2027 | River Road Run Half, 10k, 5k | Comfort | Half | — | Closed |
April 2027 1 half marathon
| Date | Race | City | Distances | From | Registration |
|---|---|---|---|---|---|
| Sun, Apr 25, 2027 | Texas Tough Half Marathon & 5k | Helotes | 5K, Half | — | Closed |
Filter by date and distance on the San Antonio & South Texas calendar, or see every half marathon in Texas.
Holiday and themed half marathons around San Antonio
Themed races in San Antonio and its suburbs, matched by name and date, with the next few on the calendar. Open a race for costumes, medals and event details from the organizer.
Halloween Halfs 1
- Halloween Trick or Trot Run 5K/10K/13.1 SAN ANTONIO · Oct 31, San Antonio
Turkey trots and Thanksgiving Halfs 2
- Thanksgiving Gobble Trot Run 5K/10K/13.1 SAN ANTONIO · Nov 28, San Antonio
- Turkey Trails - San Antonio · Nov 29, San Antonio
Christmas and holiday Halfs 1
- A Merry Christmas Run 5K/10K/13.1 SAN ANTONIO · Dec 26, San Antonio
New Year's Halfs 1
- New Year's Run 5K/10K/13.1 SAN ANTONIO · Dec 26, San Antonio
Valentine's Day Halfs 1
- Valentine's Day Run 5K/10K/13.1 SAN ANTONIO · Feb 13, San Antonio
St. Patrick's Day Halfs 2
- Time to Paddy 5K/10K & Lucky 13.1 - San Antonio · Mar 14, San Antonio
- St. Paddy's Day Lucky Run 5K/10K/13.1 SAN ANTONIO · Mar 20, San Antonio
Half marathon series in San Antonio & South Texas
39 of the 52 half marathons in the region are editions of a series: the same themed race run in several cities, or the same course on a monthly schedule. Handy if you collect medals, or want a second shot a few weeks later.
| Series | Dates here | Statewide | Cities | Next edition |
|---|---|---|---|---|
| Coffee Lovers Run 5K/10K/13.1 | 3 | 12 | San Antonio | Nov 28, 2026, San Antonio |
| Sunrise Marathon 5K/10K/13.1 | 3 | 12 | San Antonio | Dec 12, 2026, San Antonio |
| Run for Chocolate 5K/10K/13.1 | 2 | 8 | San Antonio | Feb 13, 2027, San Antonio |
| Run for Donut | 2 | 8 | San Antonio | Jan 30, 2027, San Antonio |
| Run for Mental Health 5K/10K/13.1 | 2 | 8 | San Antonio | Nov 14, 2026, San Antonio |
| A Merry Christmas Run 5K/10K/13.1 | 1 | 4 | San Antonio | Dec 26, 2026, San Antonio |
| Bigfoot Classic | 1 | 8 | San Antonio | Jan 10, 2027, San Antonio |
| DoNot Stop Half Marathon/5K/10K | 1 | 5 | San Antonio | Apr 17, 2027, San Antonio |
| Golden Harvest Half Marathon & 5K/10K | 1 | 5 | San Antonio | Sep 26, 2027, San Antonio |
| Halloween Trick or Trot Run 5K/10K/13.1 | 1 | 4 | San Antonio | Oct 31, 2026, San Antonio |
| Heatwave Half Marathon/5K/10K | 1 | 5 | San Antonio | Jul 31, 2027, San Antonio |
| Heroes and Villains Half Marathon- | 1 | 4 | San Antonio | Sep 18, 2027, San Antonio |
| Hometown Half Marathon/5K/10K | 1 | 5 | San Antonio | May 29, 2027, San Antonio |
| MLK Jr. Freedom Run 5K/10K/13.1 | 1 | 4 | San Antonio | Jan 16, 2027, San Antonio |
| New Year's Run 5K/10K/13.1 | 1 | 4 | San Antonio | Dec 26, 2026, San Antonio |
| PB&J Fuel Run 5K/10K/13.1 | 1 | 4 | San Antonio | Oct 31, 2026, San Antonio |
| Red, White and Blue Half Marathon | 1 | 8 | San Antonio | Jul 10, 2027, San Antonio |
| Rodeo Stampede | 1 | 8 | San Antonio | Mar 14, 2027, San Antonio |
| Run for Breast Cancer 5K/10K/13.1 | 1 | 4 | San Antonio | Dec 12, 2026, San Antonio |
| Run for PB&J 5k/10k/13.1 | 1 | 4 | San Antonio | Apr 10, 2027, San Antonio |
| Run Juneteenth Day 5K/10K/13.1 | 1 | 4 | San Antonio | Jun 19, 2027, San Antonio |
| Run Together Against Breast Cancer | 1 | 4 | San Antonio | Feb 27, 2027, San Antonio |
| Running through the Decades Half Marathon | 1 | 8 | San Antonio | Apr 17, 2027, San Antonio |
| Sloth Run 5K/10K/13.1 | 1 | 4 | San Antonio | Apr 10, 2027, San Antonio |
| Spring Fling | 1 | 7 | San Antonio | Apr 4, 2027, San Antonio |
| St. Paddy's Day Lucky Run 5K/10K/13.1 | 1 | 4 | San Antonio | Mar 20, 2027, San Antonio |
| Thanksgiving Gobble Trot Run 5K/10K/13.1 | 1 | 4 | San Antonio | Nov 28, 2026, San Antonio |
| The Wiener Run | 1 | 6 | San Antonio | May 9, 2027, San Antonio |
| Time to Paddy 5K/10K & Lucky 13.1 | 1 | 5 | San Antonio | Mar 14, 2027, San Antonio |
| Turkey Trails | 1 | 5 | San Antonio | Nov 29, 2026, San Antonio |
| Valentine's Day Run 5K/10K/13.1 | 1 | 4 | San Antonio | Feb 13, 2027, San Antonio |
| Veterans Day Freedom Run 5K/10K/13.1 | 1 | 4 | San Antonio | Nov 14, 2026, San Antonio |
Training for a half in San Antonio
Long runs on the Greenway. The City of San Antonio runs approximately 105 miles of Howard W. Peak Greenway Trails, enough to get to 13 miles without repeating much. The San Antonio RoadRunners’ marathon relay runs point to point on the Salado Creek greenway from The Rim. More places are on our running in Texas guide.
December and April are the peaks. The San Antonio Marathon half starts with the full at 7:15 a.m. on December 6, 2026, with a 4-hour limit; our San Antonio Marathon guide has the course and fees. The 53rd Fiesta Mission Run, an official Fiesta event from Mission County Park, adds a half in April.
Trail halves are close. McAllister Park, Eisenhower Park and Government Canyon all host trail races. See the Trail filter above or our Texas trail race calendar.
Respect the heat outside winter. From late spring to early fall, run at sunrise, drink before you are thirsty and run by effort rather than pace. Stop and cool down for heavy sweating, weakness or clammy skin; call 911 for confusion or slurred speech. Our zone 2 guide covers training through it.
April 2027 is the busiest month for half marathons around San Antonio on the current calendar, with 10 races.
Sources: City of San Antonio Parks, the National Weather Service heat safety guide, its heat illness guide. General information, not medical advice.
Places to run in San Antonio
Howard W. Peak Greenway Trails
Approximately 105 miles of multi-use, accessible trails across San Antonio, run by the City of San Antonio.
Source: City of San Antonio Parks
San Antonio running stores
- iRun Texas Broadway / Alamo Heights · 4001 Broadway
shoe fitting, gait analysis, group runs, training programs
- Fleet Feet Culebra Commons · 7010 W Loop 1604 N, unit 103
personalized shoe fittings
- Fleet Feet Stone Oak · 21019 US Highway 281 N
personalized shoe fittings, weekly social runs, special events
- Fleet Feet The Quarry · 7322 Jones Maltsberger Rd #152
personalized shoe outfitting, training programs, social runs
- Fleet Feet The Rim · 17603 La Cantera Pkwy, Suite 117
personalized shoe outfitting, training programs, community events
- iRun Bitters · 2602 NW Loop 1604, Bldg 1, Ste 106
shoe fitting, gait analysis, training programs
- iRun Stone Oak · 20079 Stone Oak Pkwy, Suite 3120
shoe fitting, gait analysis
- iRun Texas Dominion · 22211 IH 10 West, Suite 1107A
shoe fitting, gait analysis, training programs
Half marathons around San Antonio per month
- October 2026 2
- November 2026 6
- December 2026 6
- January 2027 6
- February 2027 4
- March 2027 4
- April 2027 10
- May 2027 5
- June 2027 2
- July 2027 2
- August 2027 1
- September 2027 3
San Antonio and its suburbs, as listed on RunSignup. Later months fill in as organizers post dates.
Half marathons by city in San Antonio & South Texas
San Antonio half marathons FAQ
How many half marathons are in San Antonio?
50 upcoming races in San Antonio have a half marathon on RunSignup, and 52 races across San Antonio & South Texas.
When is the San Antonio half marathon?
The San Antonio Marathon’s half is Sunday, December 6, 2026, starting with the marathon at 7:15 a.m., with a 4-hour limit. There are no transfers or deferrals. Our San Antonio Marathon 2026 guide has prices, the course past the River Walk and the Pearl, and the expo.
What is the next half marathon in San Antonio?
Halloween Trick or Trot Run 5K/10K/13.1 SAN ANTONIO on Oct 31, 2026 is the next San Antonio race with a half marathon on RunSignup. Standalone halves coming up include Battle of Leon Creek: 20-Miles, 13.1, 10-Mile, 5K (Nov 14, 2026, San Antonio), Siesta Half Marathon (Apr 25, 2027, San Antonio), Texas Tough Half Marathon & 5k (Apr 25, 2027, Helotes) and Run This Mother Half Marathon, 10k, 5K (May 9, 2027, San Antonio).
Is there a half marathon at Fiesta?
Yes. The San Antonio RoadRunners’ 53rd Fiesta Mission Run is Sunday, April 18, 2027, from Mission County Park, with a half marathon, 10K, 5K and kids’ 1K. The club calls its 10K Texas’ oldest and says the race sells out fast.
When is half marathon season in San Antonio?
April 2027 has the most San Antonio-area halves on the current calendar, with 10. Most road halves run from fall through spring, peaking with the San Antonio Marathon in December and the Fiesta Mission Run in April.
What are the half marathon series in San Antonio?
39 of the 52 San Antonio-area halves are editions of a series that repeats the same themed race in several cities or on a monthly schedule, such as Coffee Lovers Run 5K/10K/13.1 (3 dates), Sunrise Marathon 5K/10K/13.1 (3 dates) and Run for Chocolate 5K/10K/13.1 (2 dates). The 4 standalone halves are one-off local races with their own course.
Blog & Dispatch
From the Dispatch
News ·
Texas race weekend, Nov. 7–8: a half marathon over the new Harbor Bridge, El Paso’s Transmountain climb, the Cypress Half and a Hill Country marathon with pie
The best Texas races on Nov. 7–8, 2026: Corpus Christi’s Harbor Half over the new Harbor Bridge, El Paso’s Transmountain Half, the Cypress Half, the Mustang Marathon in Marble Falls and more, with fees and deadlines.
News ·
Fort Worth Marathon 2026: the 20th festival is Nov. 7–8, and the 20-miler is in its final year
The Fort Worth Marathon runs Nov. 7–8, 2026 from Farrington Field. Start times, fees before the Nov. 2 increase, the BQ course, cutoffs, pace groups and pickup.
News ·
Four marathons in four days, or 250K in one go: Texas’s toughest Thanksgiving-weekend races
The Texas Quad runs a marathon or half every day Nov. 26–29 at Bachman Lake; the Colorado River Run adds a 250K and 100-miler near Bastrop. Spots, fees and cutoffs.