

Lost Pines Endurance Fest 5K to 250K
- Date
- Saturday, January 16, 2027– Monday, January 18, 2027
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When and where is Lost Pines Endurance Fest 5K to 250K?
Lost Pines Endurance Fest 5K to 250K is on Saturday, January 16, 2027 through Monday, January 18, 2027 in Bastrop, Texas. The first event starts at 7:00 AM local time. Distances: 5K, 10K, 10 Miles, half marathon, 25K, marathon, ultra and Ruck. Current entry fees run $35 to $329.99 on RunSignup, before processing fees. Online registration is open and closes Jan 15, 2027.
Lost Pines Endurance Fest race guide
Lost Pines Endurance Fest is a Fit Foundation trail weekend at Lake Bastrop on MLK weekend, January 16–18, 2027, with everything from a 5K to a 250K. The races use the North-South Trailway, an out-and-back through loblolly pines with lake views, creek crossings and wooden bridges. The 200K and 250K are lap races on a 14-mile loop with a 36-hour limit.
- Venue
- Lake Bastrop North & South Shore Parks
- Distances
- 5K to 250K, plus rucks
- 250K / 200K limit
- 36 hours
- Lap
- 14 miles
- Terrain
- Dirt, sand, rock, pine needles
- Weekend
- MLK weekend
Lost Pines Endurance Fest FAQ
When and where is Lost Pines Endurance Fest?
January 16–18, 2027, at Lake Bastrop North Shore and South Shore Parks, 375 South Shore Road, Bastrop. Saturday is race day one (250K, 100 miler, 50 miler, 50K, marathon, half and 5K) and Sunday is race day two (25K, 10-miler and 10K).
How much does Lost Pines Endurance Fest cost?
Current RunSignup entry fees, before processing fees: 250K $329.99 ($369 from December 1); Lost Pines 100 Miler $199 ($209 from December 1); Lost Pines 50 Miler $159 ($179 from December 1); Lost Pines 50K $119 ($139 from December 1); Lost Pines Marathon $109.99 ($129.99 from December 1); 25K $100 ($115 from December 1); Lost Pines Half-Marathon $95.99 ($109.99 from December 1); Lost Pines Half-Marathon Ruck $95.99 ($109.99 from December 1). 5 more entries are listed in the events table. Prices in parentheses are the next RunSignup tier.
What distances are at Lost Pines?
5K, 10K, 10-mile, 25K, half marathon, marathon, 50K, 50 miler, 100K, 100 miler, 200K and 250K, plus ruck divisions at the 5K, 10K and half. Ruckers carry at least 30 pounds (men) or 20 pounds (women) in a rucksack or backpack; weighted vests don’t count.
What is the Lost Pines course like?
An out-and-back on the North-South Trailway through loblolly pine forest, with lake views, creek crossings and wooden bridges. Expect packed dirt, sand, rock and pine needles over rolling hills. Headlamps are required after dark.
How does the Lost Pines 250K work?
The 250K is eleven 14-mile laps plus a 1-mile lap; the 200K is eight 14-mile laps plus a 12-mile lap. Both have a 36-hour limit, with posted wall-clock lap cutoffs (about 17:24 per mile including aid stops). The last 250K lap must start by 3:43 a.m. Monday, with a 7 a.m. Monday finish cutoff.
Can you camp at Lost Pines?
Lake Bastrop South Shore Park has cabins, RV hookups and tent camping, and downtown Bastrop is a few minutes away.
Are pacers allowed at Lost Pines?
Yes, with a $35 pacer registration on RunSignup. Pacer registration closes January 15, 2027.
Does Lost Pines count toward the Rio Colorado Ultra Slam?
Yes. Lost Pines is a qualifying race for the 2027 Rio Colorado Ultra Slam: the 50K for the 150 tier, and the longer ultras for the 200 and 400 tiers.
Race facts checked November 8, 2026 against RunSignup: Lost Pines Endurance Fest, Fit Foundation and RunSignup: Rio Colorado Ultra Slam. Entry fees come from RunSignup. Always confirm details with the race before you travel.
Events & distances
| Event | Distance | Start | Entry fee | Registration |
|---|---|---|---|---|
| 250K | Ultra | Jan 16, 2027, 7:00 AM | $329.99 until Nov 30, 2026 | Opens Aug 19, 2026 · Closes Jan 14, 2027 |
| Lost Pines 100 Miler | Ultra | Jan 16, 2027, 8:00 AM | $199.00 until Nov 30, 2026 | Opens Jan 9, 2026 · Closes Jan 14, 2027 |
| Lost Pines 100K | Ultra | Jan 16, 2027, 8:00 AM | — | Opens Jan 9, 2026 · Closes Nov 7, 2026 |
| Lost Pines 50 Miler | Ultra | Jan 16, 2027, 8:00 AM | $159.00 until Nov 30, 2026 | Opens Jan 9, 2026 · Closes Jan 14, 2027 |
| Lost Pines 50K | Ultra | Jan 16, 2027, 9:00 AM | $119.00 until Nov 30, 2026 | Opens Jan 9, 2026 · Closes Jan 14, 2027 |
| Lost Pines Marathon | Marathon | Jan 16, 2027, 10:00 AM | $109.99 until Nov 30, 2026 | Opens Jan 9, 2026 · Closes Jan 14, 2027 |
| Lost Pines Half-Marathon | Half | Jan 16, 2027, 10:00 AM | $95.99 until Nov 30, 2026 | Opens Jan 9, 2026 · Closes Jan 14, 2027 |
| Lost Pines Half-Marathon Ruck | Half | Jan 16, 2027, 10:00 AM | $95.99 until Nov 30, 2026 | Opens Jan 9, 2026 · Closes Jan 14, 2027 |
| Lost Pines 5K | 5K | Jan 16, 2027, 10:00 AM | $44.99 until Nov 30, 2026 | Opens Jan 9, 2026 · Closes Jan 14, 2027 |
| Lost Pines 5K (Ruck) | 5K | Jan 16, 2027, 10:00 AM | $44.99 until Nov 30, 2026 | Opens Jan 9, 2026 · Closes Jan 14, 2027 |
| 25K | 25K | Jan 17, 2027, 7:00 AM | $100.00 until Nov 30, 2026 | Opens Jan 9, 2026 · Closes Jan 14, 2027 |
| Lost Pines 10-Miler | 10 Miles | Jan 17, 2027, 7:00 AM | $85.99 until Nov 30, 2026 | Opens Jan 9, 2026 · Closes Jan 14, 2027 |
| Lost Pines 10K | 10K | Jan 17, 2027, 7:00 AM | $59.99 until Nov 30, 2026 | Opens Jan 9, 2026 · Closes Jan 14, 2027 |
| Lost Pines 10K Ruck | 10K | Jan 17, 2027, 7:00 AM | $59.99 until Nov 30, 2026 | Opens Jan 9, 2026 · Closes Jan 14, 2027 |
| Pacer Registration | — | Jan 17, 2027, 7:00 PM | $35.00 until Jan 15, 2027 | Opens Aug 19, 2026 · Closes Jan 15, 2027 |
Fees shown are the RunSignup price tier in effect now, before processing fees. Times are local to the race.
About Lost Pines Endurance Fest 5K to 250K
LOST PINES
ENDURANCE FEST
Lake Bastrop · Bastrop, Texas
5K • 10K • 10-MILE • HALF MARATHON • 25K • MARATHON • 50K • 50M • 100K • 100M • 250K • RUCK
Your New January Tradition Starts Here
Kick off the new year on the trails. The Lost Pines Endurance Fest is a brand-new multi-distance trail event set among the towering loblolly pines and shimmering lakeside views of Lake Bastrop. Whether you're chasing your first 5K finish, grinding through a full marathon, pushing into ultra territory on the 50K, testing your limits over eight hours of running, or loading up the ruck and grinding it out, there's a place for you at the start line.
The course follows the scenic North-South Trailway, an out-and-back route that winds through one of Central Texas's most beautiful and resilient landscapes, the famous Lost Pines. Expect rolling terrain, packed-dirt singletrack, pine-needle-cushioned stretches, and glimpses of Lake Bastrop through the trees. It's runnable, it's gorgeous, and in January, the cool Central Texas air makes it just about perfect.
We built this race for everyone. First-timer? Welcome. Ultra veteran? Let's go. Rucker with a loaded pack? We've got your division. This is a weekend to push your limits, support each other, and celebrate what your body can do.
The Course
North-South Trailway · Out & Back
The North-South Trailway connects Lake Bastrop's South Shore and North Shore parks, curving and climbing gently through dense pine forest, past scenic lake overlooks, and across a series of bridges that span the park's creeks and inlets. The trail surface is a mix of packed dirt, sand, and rock with gentle rolling elevation changes, technical enough to feel like real trail running, forgiving enough to keep you moving.
Toe Drain Crossing, one of the wooden bridges on course.
|
Terrain Packed dirt, sand, rock, pine needles. Rolling hills. Well-marked and well-maintained. |
Scenery Towering loblolly pines, lake views, creek crossings, quiet forest. One of Texas's most unique ecosystems. |
January Mornings in the 40s to 50s°F. Afternoons 50s to 60s°F. Headlamps required after dark. |
Choose Your Challenge
Something for every runner, every goal, every pace.
▲ Saturday
|
5K TRAIL 5K |
13.1M HALF MARATHON |
26.2M MARATHON |
|
50K, 50MI, 100K TRAIL ULTRA |
100MI, 250K, ULTRA ENDURANCE |
▲ Sunday
|
10K TRAIL 10K |
10MI TRAIL 10-MILER |
25K TRAIL 25K |
▲ Ruck Division
|
5K RUCK (SATURDAY) |
10K RUCK (SUNDAY) |
13.1 HALF MARATHON RUCK (SATURDAY) |
The Weekend
Two days in the Lost Pines. Make a weekend out of it.
MLK Weekend means a long weekend for many, perfect for making a trip out of it. Lake Bastrop South Shore Park has cabins, RV hookups, and tent camping right in the park, so you can wake up steps from the start line. Bastrop's charming downtown is just minutes away for post-race food, drinks, and exploring.
|
Saturday Race Day One ▸ 5K, Half Marathon & Marathon |
Sunday Race Day Two ▸ 10K Trail Run |
First 5K or Fiftieth Ultra? You Belong Here
The Lost Pines Endurance Fest was built from the ground up to be the kind of race where everyone feels at home. We want the first-timer to feel the same energy and support as the seasoned ultra runner. We want the rucker grinding under a loaded pack to get the same cheers as the 5K finisher crossing the line with a huge grin. This is a community event, and you're part of it the moment you sign up.
Ruck weight rules for the event:
• Men: 30 lbs minimum • Women: 20 lbs minimum
A few important details regarding the weight:
• These are minimum baselines (floors, not targets), so you are welcome to carry more if you want the extra challenge, but you cannot carry less.
• Your ruck will be officially weighed and verified at check-in, and we do random spot checks throughout the event.
• The weight must be carried inside a standard rucksack/backpack worn on your back (weighted vests do not qualify).
• The pack must remain on your back for the entirety of the event, though you are welcome to take it off and set it down to rest during your break.
The 8-hour timed event is perfect for runners who want to set their own pace and see how far they can go. Run as many out-and-back laps as you can within your time window. Walk when you need to. Sit at the aid station for a minute. Then get back out there. Every mile counts.
Start Your Year on the Trail
MLK Weekend. Lake Bastrop South Shore. Pine trees, lake views, and the kind of challenge that reminds you what you're capable of.
We'll see you at the start line.
Description provided by the race organizer via RunSignup.
Race data provided by RunSignup and refreshed every morning(last sync Nov 12, 2026). Registration happens on RunSignup; Lone Star Strides may earn a referral commission at no cost to you. Always confirm dates and details on the official race page.
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