Event Description
LABOR DAY TRAIL CHALLENGE
RUN FREE: RETURN OF THE BULL
The gates are open. The bull is loose. Run Free. Conquer the Lost Pines on single-track trails along the Colorado River
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TRAILS
Single-Track & Fire Roads
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ECOSYSTEMS
4 Unique Biomes
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SETTING
Colorado River
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About the Race
You’ve been penned up all year. It’s time to break the fences. Kick off your Labor Day weekend with an unforgettable trail running experience at McKinney Roughs Nature Park, a stunning 1,140-acre preserve just 13 miles east of Austin along the Colorado River. Choose from seven events that wind through the park's rolling box canyons, wildflower meadows, and towering loblolly pine forests.
This is Central Texas trail running at its finest. You'll traverse four distinct ecosystems. Post Oak Savannah, Blackland Prairie, East Texas Piney Woods, and a lush riparian corridor, all in a single race. Expect technical single-track, scenic river overlooks, and the kind of terrain that makes every mile an adventure.
THE RIO COLORADO 250
The river you run above on Saturday is the one the series is named for.
Two hundred fifty kilometers with Fit Foundation in a calendar year earns the Rio Colorado 250 buckle. Not instead of your race hardware. On top of it. Every kilometer counts, including the ones you cover in the timed events.
That last part matters. The 8-Hour Solo doesn't credit you a fixed distance. It credits you what you actually walk, run, and grind out between seven in the morning and three in the afternoon. Some of you will put more on the board in one day than a 50K would give you.
Here is the calendar. Autumn Harvest on October 10. Fields of Gold on October 24. The Colorado River Run on November 27. Star of Texas on December 13.
Four events in nine weeks. September is the last quiet place to start.
The count begins at McKinney Roughs.
Return of the Bull marks the second chapter of the Rodeo Trail Run Series, following the inaugural Austin's Rodeo Trail Run at Grelle Recreation Area. All half-marathon, marathon, and 50K finishers receive a custom rodeo-style belt buckle and event shirt, the signature swag of the series.
Unleash the grit. Master the Roughs. Run Free.
Choose Your Distance
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POPULAR
🔥
HALF MARATHON & RUCK
13.1 Miles
Intermediate
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MARATHON
26.2 Miles
Advanced
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ULTRA
🐂
50K or 50 Miles
Last Runner Standing
Ultra Distance
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⏱️
8-Hour Run (Solo or Relay)
Choose-Your-Own-Adventure: Run or walk for 8 hours. You can also grab your favorite running partner, build your duo, and take on the 8-Hour Relay Challenge! This high-energy format strips away the pressure of a fixed distance and replaces it with a fast-paced, strategy-driven race against the clock.
Beat September.
Own October.
Labor Day weekend is summer taking its last swing at Texas, and this is the stop where you swing back. One 2 mile loop, all race. From the 10 AM bell you run it once an hour. Twice from 6 PM. Three times from 2 AM. At 10 AM Sunday it locks there: three laps, 6 miles, on the hour, for as long as anyone keeps answering the bell.
The first eight hours are deliberately generous, and in September that is the whole idea. One lap an hour is walkable in the worst heat of the day, which means the field is still intact when the sun goes down and the race actually starts. Everyone gets to the interesting part. What happens after that is up to you.
Heat is the one variable an entire field feels at the same time, so nobody out here is having an easier day than you are. The corral becomes shade tents and ice and crews trading tricks between bells, and a loop that felt like a fight at four in the afternoon turns into a different loop entirely once the sun drops. Run the hot hours patiently and the night belongs to you.
Runners heading for the season finale treat Labor Day as the proving ground. It is the last data point before Fields of Gold and the one that tells you the most about what you will have left in October. Everything Labor Day teaches you, you get about six weeks to act on.
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2 MILES
One Loop, All Race
The course never changes. Only how many times you run it before the bell.
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1 → 3
Laps Per Hour
One more lap added every eight hours. You do not get the easy version back.
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96 MILES
Just To Reach The Wall
Reach it in September and you have done something almost nobody in the field will.
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60 MIN
The Hour Doesn't Stretch
Heat buys you nothing. The bell rings on the hour whatever the thermometer says.
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Same loop every hour. One more lap of it every eight.
| Hours | Loop | Pace | On the clock | Total |
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| 1 to 8 | 1 lap / 2.0 mi | 30:00 | 10 AM to 6 PM | 16 mi |
| 9 to 16 | 2 laps / 4.0 mi | 15:00 | 6 PM to 2 AM | 48 mi |
| 17 to 24 | 3 laps / 6.0 mi | 10:00 | 2 AM to 10 AM | 96 mi |
| 25+ | 3 laps / 6.0 mi | 10:00 | 10 AM Sun onward | +6 every hour |
From hour 25 the loop stops growing. Three laps, on the hour, at a pace that leaves you nothing unless you beat 10:00 for six miles. Every minute under that is a minute you get to sit down, and by then a minute is worth a great deal.
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Use the first block
| Eight hours of one lap an hour is the most recovery time you will ever get in a Gauntlet. Walk it, eat properly, stay ahead on fluids, and arrive at hour 9 with something in the tank instead of a heat debt. |
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The night block
| The step to two laps comes at 6 PM, with dark arriving a couple of bells later. That is the block where the race sorts itself, and it rewards whoever was most disciplined during the heat. |
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Your crew
| Ice, fluids, salt and a chair in the shade have to be ready before you get to the corral, not assembled while you stand over them. Whatever you save in the hour is yours to rest with. |
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01 · Opener
Canyon of the Eagles
New Year's Day, Burnet
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02
Bluebonnet Trail Run
Spring, Marble Falls
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03 · You are here
Labor Day Challenge
Labor Day weekend
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04 · Finale
Fields of Gold
October, Marble Falls
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One stop left after this one. Everything Labor Day teaches you, Fields of Gold gives you the chance to spend.
Enter The Gauntlet →Course Highlights
| Lost Pines Forest Run through towering loblolly pines and eastern red cedars, an isolated pocket of East Texas ecology | River Overlooks Scenic bluff-top views of the Colorado River from the Ridge and Bluff Overlook trails | |
| Rolling Elevation Up to 469 ft of elevation gain on technical single-track through box canyons and ridgelines | Aid Stations Fully stocked with water, electrolytes, snacks, and encouragement. Our main aid station at the start/finish hub is fully stocked with hot food, fruit, pickle juice, cold drinks, and more. This is your primary fueling point each loop. On-course aid stations provide water and light supplies to keep you moving between loops. Plan to refuel at the hub each time you come through. | |
| Wildlife Corridor Four ecosystems converge here, home to 250+ bird species and diverse Central Texas wildlife | Rodeo Series Buckle Every half-marathon, marathon, and 50K finisher earns a custom rodeo-style belt buckle from the Rodeo Trail Run Series | |
Race Swag & Awards
| TRAIL RUN RODEO SERIES
Rodeo Series Buckle
Custom belt buckle, signature of the Rodeo Trail Run Series. Every half-marathon, marathon, 50K & 50 miles finisher.
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Event T-Shirt
with rodeo series branding
| LOST PINES
Finisher Medal
Custom design for all finishers
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Awards
Overall WinnersPlaque award for top male & female finisher in each distance event | FINISHER RODEO TRAIL RUN SERIES
All FinishersEvery half-marathon, marathon, and 50K runner who crosses the finish line within cutoff earns a Rodeo Trail Run Series buckle. Medals for other distances. |
We Do Our Part
In 1933 the country put an eagle in the window. Every business that signed on to a wage floor, a limit on hours, and an end to child labor hung a blue eagle placard out front, and the line printed under it was We Do Our Part. It is the most American thing ever put on a poster, and it is the right sentence for a race run on the weekend that honors work.
The bull gets you out of the pen. The eagle is what you carry home. Nobody does your part but you.
| The Eagle Earns It An eagle does not scavenge somebody else's kill and call it a day. It hunts in the open where everyone can see. Same deal out here. There is no way to fake a 50K. | The Summer Was the Job You did not train for this in September. You trained in July and August, in Texas, before sunrise, on trails that never cooled off overnight. That was the labor. Saturday is what it was for. | Patience Is a Working Virtue Eagles perch for hours and move once, when it matters. Go out honest, hold something back, spend it late. Everyone who has gone too hard in the first hour has paid for it in the fourth. |
You clock in at seven. You keep showing up lap after lap. What you have at three is exactly what you put in, and there is no shortcut in a timed format. Only the willingness to go back out one more time.
The Eagle Award
The Gauntlet Last Runner Standing (at ultra distance), top male and female finishers in the 50K and 50 Mile take home an eagle trophy. It is the one award on this course you cannot get by being fast for an hour. Every other distance is recognized with the standard overall awards.
Course Records
First year on this course. Every mark below is standing there waiting for somebody to take it.
| Distance | Record Holder |
| 50 Mile | Jonathan Gardner · 14:51:43 |
| 50K | Andrew McGregor · 6:17:51 |
| Marathon | Kimberly Pilcher · 4:57:24 |
| Half Marathon | Nicole Bitter · 2:00:30 |
| 10K | James Bales · 38:56 |
| 5K | Noah Bales · 19:26 |
| 8-Hour Timed Run CHIP TIMED AT THE 50K MARK | Natalie Harvey · 50K in 6:54 |
Every 8-Hour runner is chip timed at the 50K mark. If you cover 50K faster than the registered 50K field, the overall 50K award is yours. It runs one way only. A registered 50K finish does not count toward the 8-Hour award, because the 8-Hour is scored on total distance for the full eight hours.
Race Details
| Day | Labor Day Weekend (Saturday) |
| Start Time | 7:15 AM for ultra distances and 8-Hour; 8:00 AM Half-Marathon & Ruck; Last Runner Standing 10:00 AM |
| Location | McKinney Roughs Nature Park |
| Address | 1884 State Hwy 71 West, Cedar Creek, TX 78612 |
| Surface | Dirt / Single-Track Trail |
| Chip Timed | Yes |
| Stroller Friendly | No (Trail course) |
Nearby Accommodations: Hyatt Regency Lost Pines Resort & Spa is adjacent to the park. Additional hotels available in Bastrop (8 miles east). Make a weekend of it, race Saturday, relax Sunday and Monday.
Rodeo Trail Run Series
The Labor Day Trail Challenge is the second event in the Rodeo Trail Run Series. Ran the Austin Rodeo Trail Run at Grelle in March? You're a series veteran. New to the rodeo? Welcome to the herd. Either way, you'll earn one of the two signature series buckles and shirt when you cross the finish line.
Rucking is covering ground with a loaded pack. Same course as the half marathon, same start, same finish line, same cutoff. The only difference is what you are carrying and who you are racing.
Ruckers are scored as their own division with their own results and their own awards. You are not competing against the runners and they are not competing against you.
- Weigh in before the start. Bring your pack to the start area at least 30 minutes before your wave. We weigh it, we tag it, you go.
- Water does not count. Your hydration, food, phone and layers are on top of the minimum. The weight is dry weight.
- Any weight is fine. Ruck plates, bricks, sand, books, dumbbells. It has to be secure and it has to stay in the pack for the whole course.
- You finish with what you started with. Weight is checked again at the finish. Anything under the minimum moves you out of the ruck division.
- Carry it yourself. No handing your pack off, no dragging, no wheels.
- Run, walk, or anything between. There is no rule about how you move, only about what you carry.
- Rucking counts toward your Run the River mileage exactly the same as running. Thirteen point one miles is thirteen point one miles.
A loaded pack on a trail is harder than the same distance on your feet, and most people go out too quick. A few things that help:
- Train with the weight before race day. Even two or three loaded walks makes a difference to your shoulders.
- Get the load high and tight against your back. Weight that sits low and swings will wreck you by mile six.
- Wear the socks and shoes you have already tested. Rucking changes how your feet hit the ground.
- Pack the weight so it cannot shift. Movement inside the pack is the most common reason people stop.
