50Ks, 50-milers, 100-milers, backyard and timed ultras, 2026–27

Ultramarathons in Texas

Texas has 69 upcoming ultramarathons on the RunSignup calendar between November 2026 and November 2027, in 44 cities. 10 races offer 100 miles or more, 26 top out between 50K and 50 miles, 10 are backyard ultras and 14 have a timed event of 6 hours or more. 52 are on trails and 17 on roads, paths or mixed surfaces. December 2026 is the busiest month, with 11. Current RunSignup fees for the ultra distance run $25 to $545. 65 have registration open.

Last updated Nov 12, 2026. Race data from RunSignup, refreshed every morning. Always confirm details on the official race page.

Upcoming ultras: 69
100 miles or more: 10
Backyard & timed: 24
Registration open: 65

Want shorter trail races too? See every trail race in Texas. Planning the big ones? Read our Texas ultra season guide to Cactus Rose, Big Tex, Brazos Bend, Bandera and Rocky Raccoon.

Texas ultras by distance

Each race sits under the longest fixed distance it offers. Races with only a backyard or timed format are counted under those formats instead.

Timed ultras (6 hours+) · 14

OUTLAST DALLAS FORT WORTH · Dec 5, Granbury
Perpetual Motion · Dec 5, Grapevine
OUTLAST SAN ANTONIO · Dec 12, San Antonio
OUTLAST AUSTIN · Dec 19, Dripping Springs

Texas ultramarathon calendar

Every upcoming Texas race on RunSignup with an event longer than a marathon, a 6-hour-or-longer timed run, or a backyard format, in date order. "Ultra distances" lists only the ultra events; most races also have shorter options. The fee is the cheapest current RunSignup tier among the ultra events (or the first tier, if registration hasn't opened), before processing fees.

Date	Race	City	Ultra distances	Ultra fee	Registration
Nov 13, 2026	2026 Sugar Rush Relay	Sugar Land Houston & Gulf Coast	75 Miles	—	Closed
Nov 14, 2026	El Taco Loco Trail	San Antonio San Antonio & South Texas	50K	—	Register
Nov 14, 2026	Wild Hare Trail Race Trail	Warda Austin & Hill Country	50 Miles, 50K	from $130	Register
Nov 21, 2026	Summit Backyard Ultra (Last Person Standing) Backyard Trail	Marble Falls Austin & Hill Country	Backyard ultra	from $175	Register
Nov 27, 2026	Colorado River Run 250K • 100 Mile • 50 Mile • 50K • Marathon • Half Marathon & Ruck • 10K • 5K • Kids 1K 100 mi Trail	Cedar Creek Austin & Hill Country	100 Miles, 50 Miles, 31 Miles	from $149.99	Register
Dec 5, 2026	Brazos Bend 100 100 mi Trail	Needville Houston & Gulf Coast	100 Miles, 100K	from $250	Register
Dec 5, 2026	Mosaic Trail Race Trail	Burnet Austin & Hill Country	50K	from $125	Register
Dec 5, 2026	OUTLAST DALLAS FORT WORTH 24-hour Trail	Granbury Dallas–Fort Worth	6-hour, 12-hour, 24-hour	from $65	Register
Dec 5, 2026	Perpetual Motion 24-hour	Grapevine Dallas–Fort Worth	12-hour, 24-hour, 6-hour	from $80	Register
Dec 12, 2026	GODSPEED 12 100 mi	Corpus Christi Coastal Bend & Rio Grande Valley	100 Miles	from $110	Register
Dec 12, 2026	OUTLAST SAN ANTONIO 6-hour Trail	San Antonio San Antonio & South Texas	6-hour	from $100	Register
Dec 12, 2026	Texmas Trail Race Trail	Smithville Austin & Hill Country	104K, 57K	—	Register
Dec 13, 2026	Dragon Trails 50k & 10K Trail	San Antonio San Antonio & South Texas	50K	—	Closed
Dec 13, 2026	Star of Texas 50 Miler • 50K • Marathon • Half Marathon • 10K • 5K • Speedyard (Fastest Person Standing) Backyard	Spicewood Austin & Hill Country	Backyard ultra, 50K	from $49.99	Register
Dec 19, 2026	OUTLAST AUSTIN 12-hour Trail	Dripping Springs Austin & Hill Country	6-hour, 12-hour	from $100	Register
Dec 19, 2026	Texas Double	Dallas Dallas–Fort Worth	31 Miles	from $125	Register
Jan 1, 2027	Canyon of the Eagles New Year's Trail Challenge · 100K & 50K ULTRA, Marathon, 13.1M Run & Ruck, 10K, 5K • Last Runner Standing Backyard Trail	Burnet Austin & Hill Country	Backyard ultra, 62.2 Miles, 31.1 Miles	from $59	Register
Jan 1, 2027	Run the River: Rio Colorado Ultra Slam™ 100 mi	Spicewood Austin & Hill Country	400 Miles, 200 Miles, 250K, 155 Miles	from $545	Register
Jan 9, 2027	Bandera Endurance Trail Race Trail	Bandera San Antonio & South Texas	100K, 50K	from $160	Register
Jan 9, 2027	River Ranch Resolution Run Trail	Liberty Hill Dallas–Fort Worth	31 Miles	from $120	Register
Jan 16, 2027	Lost Pines Endurance Fest 5K to 250K	Bastrop Austin & Hill Country	—	from $119	Register
Jan 17, 2027	Big Bend Ultra Trail	Terlingua West Texas & El Paso	62 Miles	from $175	Register
Jan 23, 2027	Alamo City Ultra Trail	San Antonio San Antonio & South Texas	50K	—	Register
Feb 6, 2027	Rocky Raccoon 100 Endurance Trail Race 100 mi Trail	Huntsville Houston & Gulf Coast	100 Miles, 100K	from $290	Register
Feb 13, 2027	Dalmatian Run Fest & Dizzy Dalmatian 101 100 mi	Fort Worth Dallas–Fort Worth	101 Miles, 78.6 Miles, 39.3 Miles, 33.7 Miles	from $110	Register
Feb 13, 2027	Houston Ultra Trail Trail	Houston Houston & Gulf Coast	50 Miles, 50K	from $105	Register
Feb 13, 2027	MATAGORDA: Gulf Coast Trail Running Festival Backyard	Matagorda Houston & Gulf Coast	Backyard ultra	from $105	Register
Feb 13, 2027	Rocky 50 Trail Race Trail	Huntsville Houston & Gulf Coast	50 Miles, 50K	from $158	Register
Feb 17, 2027	Jackalope Jam 72-hour Trail	Cat Spring Austin & Hill Country	72-hour, 48-hour, 6-hour, 12-hour, 24-hour	from $85	Register
Feb 20, 2027	OUTLAST HOUSTON 24-hour Trail	Navasota Central Texas (Waco, Bryan–College Station)	6-hour, 12-hour, 24-hour	from $90	Register
Feb 20, 2027	Up Around The Bend Trail Run Trail	Bend West Texas & El Paso	52.4 Miles	from $140	Register
Feb 27, 2027	OUTLAST CORPUS CHRISTI 6-hour Trail	Corpus Christi Coastal Bend & Rio Grande Valley	6-hour	from $90	Register
Feb 27, 2027	OUTLAST WACO 6-hour Trail	Waco Central Texas (Waco, Bryan–College Station)	6-hour	from $90	Register
Feb 27, 2027	Space City Ultra Trail	Sugar Land Houston & Gulf Coast	50K	—	Register
Mar 6, 2027	Crazy Desert Trail Race Trail	San Angelo West Texas & El Paso	100K, 50K	from $70	Register
Mar 6, 2027	Great Springs Trail Race - Austin Trail	Del Valle Austin & Hill Country	50K	from $117	Register
Mar 6, 2027	Hachie 50 Marathon, Ultra and Relay	Waxahachie Dallas–Fort Worth	50 Miles	from $90	Register
Mar 6, 2027	SARR Prickly Pear Trail	San Antonio San Antonio & South Texas	50K	from $99	Register
Mar 13, 2027	Rodeo Trail Run of Austin • Backyard Ultra (Last Cowboy/Cowgirl Standing) • 8 Hour • Marathon • Half Marathon • Backyard Ultra Relay Duos (2-Person Team) Backyard 8-hour	Spicewood Austin & Hill Country	8-hour, Backyard ultra, 28 Miles	from $119.99	Register
Mar 13, 2027	Saved By the Trail Trail	Fort Worth Dallas–Fort Worth	58K, 28 Miles	—	Register
Mar 20, 2027	Hippo Trail Fest Trail	Hutto Austin & Hill Country	50K	from $117	Register
Mar 20, 2027	Resurgence Trail Run Trail	Harlingen Coastal Bend & Rio Grande Valley	50K	from $90	Register
Mar 27, 2027	Bluebonnet Trail Run 50 Miler • 50K • Marathon • Half Marathon & Ruck • 10K • 5K • Last Runner Standing Backyard Trail	Marble Falls Austin & Hill Country	Backyard ultra, 50K	from $49	Register
Mar 27, 2027	Ricochet's Riot Trail	Killeen Central Texas (Waco, Bryan–College Station)	50K	from $120	Register
Apr 3, 2027	Hells Hills Trail Race Trail	Smithville Austin & Hill Country	50 Miles, 50K	from $117	Register
Apr 3, 2027	Panther City Ultra Trail	Fort Worth Dallas–Fort Worth	50K	—	Register
Apr 10, 2027	Brazos Bend 50 Trail	Needville Houston & Gulf Coast	50 Miles, 50K	from $100	Register
Apr 10, 2027	Full Circle Trail Race Trail	Lewisville Dallas–Fort Worth	31 Miles	from $100	Register
Apr 10, 2027	Gulf Coast Grind	Surfside Beach Houston & Gulf Coast	50K	—	Register
Apr 10, 2027	Hope For Heroes Trail	Longview East Texas & Piney Woods	45 Miles	from $25	Opens Feb 8, 2027
Apr 17, 2027	Merus Marathon & Ultra Trail	Claude Panhandle & Lubbock	52.4 Miles	from $150	Register
Apr 24, 2027	Pandora's Box of Rox Trail	Burnet Austin & Hill Country	52.4 Miles	from $138	Register
May 1, 2027	Sasquatch Shuffle Trail	Grapeland East Texas & Piney Woods	100K, 50K	—	Register
May 1, 2027	Spider Mountain Trail Race 12-hour Trail	Burnet Austin & Hill Country	12-hour, 9-hour, 6-hour	from $110	Register
May 15, 2027	Pechanga Trail Run Trail	Spicewood Austin & Hill Country	—	from $130	Register
May 15, 2027	Possum's Revenge Trail	Graford Dallas–Fort Worth	69 Miles, 52 Miles, 56K	from $110	Register
May 29, 2027	Austin's Backyard Ultra • Marathon • Full • Half & Memorial Day Remembrance Run 4 Miler • 8 Miler Backyard	Marble Falls Austin & Hill Country	Backyard ultra	from $169.99	Register
May 29, 2027	High Hope Endurance Run 2027 - 200K - 100K - 50K - 25K - 10K - 5K 100 mi Trail	Glen Rose Dallas–Fort Worth	200K, 100K, 50K	from $121.50	Register
May 29, 2027	River's Edge Trail Race Trail	Georgetown Austin & Hill Country	50K	from $117	Register
Jun 5, 2027	Night at the Arcade Trail Run Trail	Smithville Austin & Hill Country	57K, 28 Miles	—	Register
Jun 12, 2027	Great Springs Trail Race - Canyon Lake Trail	Canyon Lake San Antonio & South Texas	50K	from $117	Register
Jul 17, 2027	Austin Solstice Circuit 52 Miler • 50K • Marathon • 27K • Half-Marathon • 10K • 5K • 12-Hour Solo & Relay 12-hour	Spicewood Austin & Hill Country	12-hour, 52.7 Miles, 31 Miles	from $119.99	Register
Jul 17, 2027	Rise In the Pines 100 mi Trail	Smithville Austin & Hill Country	200K, 100 Miles, 100K, 50K	—	Register
Aug 28, 2027	OUTLAST AMARILLO - NIGHT OUT EDITION 6-hour Trail	Amarillo Panhandle & Lubbock	6-hour	from $90	Register
Sep 4, 2027	Labor Day Trail Challenge 50-Mile • 50K • Marathon • Half Marathon & Ruck • 8-Hour • Last Runner Standing Backyard 8-hour	Cedar Creek Austin & Hill Country	8-hour, Backyard ultra	from $55	Register
Sep 25, 2027	Sky Island Trail	Fort Davis West Texas & El Paso	31 Miles	from $149	Opens Mar 24, 2027
Oct 9, 2027	Autumn Harvest 50K • 20-Miler • 10-Miler • Full • Half • 10K • 5K • Last Runner Standing • Last Rucker Standing 100 mi Backyard	Bastrop Austin & Hill Country	Backyard ultra, 50K	from $95	Register
Oct 30, 2027	Fields of Gold Last Runner Standing • 50K • Marathon • Half Marathon & Ruck • 12 Hour • 10K • 5K Backyard 12-hour	Marble Falls Austin & Hill Country	Backyard ultra, 12-hour, 50K	from $99.99	Register
Nov 6, 2027	Love Never Ends Trail Run 100 mi Trail	Mt Pleasant Dallas–Fort Worth	100 Miles, 62.1 Miles, 50 Miles, 31 Miles	from $120	Register

Registration links go to RunSignup; Lone Star Strides may earn a referral commission at no cost to you. Races sold only on other sites aren't listed.

Western States qualifiers in Texas

The Western States 100 publishes its own list of qualifying races and finish cutoffs. As of Sept. 26, 2026, the Texas races on the 2027 and 2028 lists are the Brazos Bend 100 (under 32 hours), Bandera 100K (under 18 hours), Rocky Raccoon 100 (under 30 hours), and the Dinosaur Valley 100K and 100-mile (under 22 and 35 hours). The 2027 qualifying window closes Nov. 8, 2026, so this winter's Texas races count toward the 2028 lottery. Confirm on wser.org before you plan around it. On RunSignup, Brazos Bend 100 mentions Western States in the organizer's listing.

More in our Texas ultra season guide, and Thanksgiving weekend’s 250K and four-day marathon series are in our Texas Quad and Colorado River Run story.

Backyard and timed ultras

Backyard ultras have no finish line. Everyone starts a 4.167-mile loop at the top of each hour and must be back in the corral before the next one. 24 loops is 100 miles, and the last runner to finish a loop alone wins.

Timed ultras ask how far you can go in 6, 12, 24 or 48 hours, usually on a short loop past the same aid station. You can rest, eat and restart, which makes them a gentle way to try your first ultra distance.

Choosing your first Texas ultra

Start with a 50K. 26 Texas races top out between 50K and 50 miles, and most have shorter distances the same day for friends and family.
Pick the season. October to March is when Texas ultras are safest. Summer races mean heat, so read our guide to running in Texas heat.
Look for loops. Loop courses mean frequent aid and an easy place to drop gear. Flat park loops are gentler than rocky Hill Country singletrack.
Check the cutoff and pacer rules. 8 races on this page sell a pacer entry on RunSignup. Each race page shows the events and the organizer's rules.
Walk the hills and eat early. Even winners walk steep climbs. The run-walk method is a real ultra strategy.
Gear up. A vest, a headlamp and a watch with enough battery for the day. Compare the fēnix 9 and Apple Watch Ultra 4, and get fitted at a Texas running store.

Ultras by month

November 20265
December 202611
January 20277
February 202711
March 202710
April 20278
May 20277
June 20272
July 20272
August 20271
September 20272
October 20272
November 20271

Ultras by region

Top ultra cities

San Antonio (5)Spicewood (5)Burnet (4)Marble Falls (4)Smithville (4)Fort Worth (3)Bastrop (2)Cedar Creek (2)Corpus Christi (2)Huntsville (2)Needville (2)Sugar Land (2)Amarillo (1)Bandera (1)

FAQ

Are there ultramarathons in Texas?

What 100-mile races are in Texas?

Upcoming Texas races with a 100-mile or longer event on RunSignup: Colorado River Run 250K • 100 Mile • 50 Mile • 50K • Marathon • Half Marathon & Ruck • 10K • 5K • Kids 1K (Nov 27, 2026, Cedar Creek), Brazos Bend 100 (Dec 5, 2026, Needville), GODSPEED 12 (Dec 12, 2026, Corpus Christi), Run the River: Rio Colorado Ultra Slam™ (Jan 1, 2027, Spicewood), Rocky Raccoon 100 Endurance Trail Race (Feb 6, 2027, Huntsville), Dalmatian Run Fest & Dizzy Dalmatian 101 (Feb 13, 2027, Fort Worth), High Hope Endurance Run 2027 - 200K - 100K - 50K - 25K - 10K - 5K (May 29, 2027, Glen Rose), Rise In the Pines (Jul 17, 2027, Smithville), Autumn Harvest 50K • 20-Miler • 10-Miler • Full • Half • 10K • 5K • Last Runner Standing • Last Rucker Standing (Oct 9, 2027, Bastrop) and Love Never Ends Trail Run (Nov 6, 2027, Mt Pleasant). Current fees for the 100-mile-plus distances run $95 to $545.

What is a good first ultramarathon in Texas?

Most people start with a 50K (31 miles). 26 upcoming Texas races top out between 50K and 50 miles, including El Taco Loco (Nov 14, 2026, San Antonio), Mosaic Trail Race (Dec 5, 2026, Burnet), Dragon Trails 50k & 10K (Dec 13, 2026, San Antonio), Star of Texas 50 Miler • 50K • Marathon • Half Marathon • 10K • 5K • Speedyard (Fastest Person Standing) (Dec 13, 2026, Spicewood), OUTLAST AUSTIN (Dec 19, 2026, Dripping Springs) and Texas Double (Dec 19, 2026, Dallas). Look for a loop course with frequent aid, a generous cutoff and cool-season weather (October to March).

Which Texas ultras are Western States qualifiers?

On the Western States list for the 2027 and 2028 lotteries (checked Sept. 26, 2026 at wser.org): Brazos Bend 100 (finish under 32 hours), Bandera 100K (under 18 hours), Rocky Raccoon 100 (under 30 hours), and the Dinosaur Valley 100K and 100-mile (under 22 and 35 hours). Races held after Nov. 8, 2026 count toward the 2028 lottery, not 2027.

What is a backyard ultra?

Every runner starts a 4.167-mile loop at the top of each hour and must finish before the next hour begins. 24 loops is 100 miles, and the last runner to finish a loop alone wins. Upcoming in Texas: Summit Backyard Ultra (Last Person Standing) (Nov 21, 2026, Marble Falls), Star of Texas 50 Miler • 50K • Marathon • Half Marathon • 10K • 5K • Speedyard (Fastest Person Standing) (Dec 13, 2026, Spicewood), Canyon of the Eagles New Year's Trail Challenge · 100K & 50K ULTRA, Marathon, 13.1M Run & Ruck, 10K, 5K • Last Runner Standing (Jan 1, 2027, Burnet), MATAGORDA: Gulf Coast Trail Running Festival (Feb 13, 2027, Matagorda), Rodeo Trail Run of Austin • Backyard Ultra (Last Cowboy/Cowgirl Standing) • 8 Hour • Marathon • Half Marathon • Backyard Ultra Relay Duos (2-Person Team) (Mar 13, 2027, Spicewood), Bluebonnet Trail Run 50 Miler • 50K • Marathon • Half Marathon & Ruck • 10K • 5K • Last Runner Standing (Mar 27, 2027, Marble Falls), Austin's Backyard Ultra • Marathon • Full • Half & Memorial Day Remembrance Run 4 Miler • 8 Miler (May 29, 2027, Marble Falls), Labor Day Trail Challenge 50-Mile • 50K • Marathon • Half Marathon & Ruck • 8-Hour • Last Runner Standing (Sep 4, 2027, Cedar Creek), Autumn Harvest 50K • 20-Miler • 10-Miler • Full • Half • 10K • 5K • Last Runner Standing • Last Rucker Standing (Oct 9, 2027, Bastrop) and Fields of Gold Last Runner Standing • 50K • Marathon • Half Marathon & Ruck • 12 Hour • 10K • 5K (Oct 30, 2027, Marble Falls).

What is a timed ultramarathon?

Instead of a set distance, you run as far as you can in a fixed time, usually 6, 12, 24 or 48 hours, on a short loop. Most let you rest and restart, which makes them a friendly first ultra. Upcoming Texas timed events: OUTLAST DALLAS FORT WORTH (Dec 5, 2026, Granbury), Perpetual Motion (Dec 5, 2026, Grapevine), OUTLAST SAN ANTONIO (Dec 12, 2026, San Antonio), OUTLAST AUSTIN (Dec 19, 2026, Dripping Springs), Jackalope Jam (Feb 17, 2027, Cat Spring) and OUTLAST HOUSTON (Feb 20, 2027, Navasota), plus 8 more.

When is ultramarathon season in Texas?

Nearly all Texas ultras run from October through April, when temperatures are safer for long days outside. Summer ultras exist, usually as night races or timed loops with short laps, so check the start time and cutoff.

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