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Lost Pines Endurance Fest 5K to 250K logo

Lost Pines Endurance Fest 5K to 250K

Date
Saturday, January 16, 2027– Monday, January 18, 2027
Jan 16 Saturday, 2027
Registration open· closes Jan 15, 2027 Register Now

Registration links may earn us a small commission at no extra cost to you.

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

EventDistanceStartEntry feeRegistration
250KUltraJan 16, 2027, 7:00 AM$329.99 until Nov 30, 2026Opens Aug 19, 2026 · Closes Jan 14, 2027
Lost Pines 100 MilerUltraJan 16, 2027, 8:00 AM$199.00 until Nov 30, 2026Opens Jan 9, 2026 · Closes Jan 14, 2027
Lost Pines 100KUltraJan 16, 2027, 8:00 AM—Opens Jan 9, 2026 · Closes Nov 7, 2026
Lost Pines 50 MilerUltraJan 16, 2027, 8:00 AM$159.00 until Nov 30, 2026Opens Jan 9, 2026 · Closes Jan 14, 2027
Lost Pines 50KUltraJan 16, 2027, 9:00 AM$119.00 until Nov 30, 2026Opens Jan 9, 2026 · Closes Jan 14, 2027
Lost Pines MarathonMarathonJan 16, 2027, 10:00 AM$109.99 until Nov 30, 2026Opens Jan 9, 2026 · Closes Jan 14, 2027
Lost Pines Half-MarathonHalfJan 16, 2027, 10:00 AM$95.99 until Nov 30, 2026Opens Jan 9, 2026 · Closes Jan 14, 2027
Lost Pines Half-Marathon RuckHalfJan 16, 2027, 10:00 AM$95.99 until Nov 30, 2026Opens Jan 9, 2026 · Closes Jan 14, 2027
Lost Pines 5K5KJan 16, 2027, 10:00 AM$44.99 until Nov 30, 2026Opens Jan 9, 2026 · Closes Jan 14, 2027
Lost Pines 5K (Ruck)5KJan 16, 2027, 10:00 AM$44.99 until Nov 30, 2026Opens Jan 9, 2026 · Closes Jan 14, 2027
25K25KJan 17, 2027, 7:00 AM$100.00 until Nov 30, 2026Opens Jan 9, 2026 · Closes Jan 14, 2027
Lost Pines 10-Miler10 MilesJan 17, 2027, 7:00 AM$85.99 until Nov 30, 2026Opens Jan 9, 2026 · Closes Jan 14, 2027
Lost Pines 10K10KJan 17, 2027, 7:00 AM$59.99 until Nov 30, 2026Opens Jan 9, 2026 · Closes Jan 14, 2027
Lost Pines 10K Ruck10KJan 17, 2027, 7:00 AM$59.99 until Nov 30, 2026Opens Jan 9, 2026 · Closes Jan 14, 2027
Pacer Registration—Jan 17, 2027, 7:00 PM$35.00 until Jan 15, 2027Opens 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
▸ 50K, 50M, 100K, 100M, 250K Trail Ultras
▸ 5K Ruck & Half Marathon Ruck
▸ Full aid station support

Sunday

Race Day Two

▸ 10K Trail Run
▸ 10-Mile Trail Run
▸ 25K Trail Run
▸ 10K Ruck
▸ Awards ceremony

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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