All American 5K

Austin Solstice Circuit Challenge

The Fastest Summer Ultramarathon in Texas

July 25 & 26, 2026 | Pace Bend Park, Lake Travis

Set a PR!

Scenic Hill Country Course

Experience the breathtaking beauty of the Texas Hill Country as you run on smooth paved roads winding through majestic oak trees. With Lake Travis as your backdrop, this picturesque route combines natural beauty with the perfect running surface for speed and comfort.

Race Image 1 Race Image 2

Set your sights on a personal record at the Austin Solstice Circuit Challenge. This unique event features a perfectly engineered 1.64-mile paved loop with an elevation gain of just 33ft at scenic Pace Bend Park on Lake Travis, designed for speed and performance even in July.

Race Distances

52.7 Mile Race

Loops: 32

Distance: 52.7 mi

Start: 7:00 PM 07/25

50K

Loops: 19

Distance: 31.0 mi

Start: 7:00 PM 07/25

Marathon (USATF Certification code: TX25015LAB)

Loops: 16

Distance: 26.35 mi

Start: 7:00 PM 07/25

25K

Loops: 10

Distance: 15.5 mi

Start: 7:00 PM 07/25; 7:00AM 07/26

10K

Loops: 4

Distance: 6.2 mi

Start: 7:00 PM 07/25;

7:00 AM 07/26

5K

Loops: 2

Distance: 3.1 mi

Start: 7:00 PM 07/25

7:00 AM 07/26

Carpe Diem 60

One Hour. One Sunrise.

Beat the heat.

Seize the morning.

Earn your day.

Start: 6:00 AM 07/26

7:00 AM 07/26

Why Choose This Race?

Fast, PR-Friendly USATF Certified Marathon Course (Boston Qualifier)

Unlike typical Texas summer ultras with brutal heat and technical trails, our smooth asphalt loop with minimal elevation gain creates ideal conditions for record-setting performances. This is a USATF-certified course: Certification code: TX25015LAB.

Evening Start Format

Race as the sun sets and July's magnificent Buck Moon rises over the limestone bluffs. Our strategic evening start times for longer distances mean cooler temperatures when you need it most.

Pacers Allowed

While we won't be providing official pacing groups for the Austin Solstice Circuit Challenge due to our size, we enthusiastically welcome personal pacers for both the Marathon, 50K and 52.7 Mile Solo events. Personal pacers can join Marathon and 50K participants after 8 loops and 52.7 Mile runners after 16 loops (approximately halfway points). Each pacer must pay a $15 fee that covers park entry, administrative costs, and an official pacer bib. Pacers need to sign a waiver and wear their designated "PACER" bib while on course. Runners are responsible for arranging their own pacers, but the loop format makes it particularly convenient for your support crew to join when you need them most. We find this flexibility is especially appreciated by first-time marathoners and ultra runners who benefit from personalized support during the challenging later miles as day turns to evening.

Pickup Information:

Saturday Packet Pickup:

Available from 4:30 PM to 6:30 PM.

Race Day Pickup:

For those unable to attend on Saturday or who prefer to pick up on race day, same-day packet pickup will be available Sunday morning from 5:30 AM to 6:30 AM.

Carpe Diem 60

One Hour. One Sunrise. Start your day with purpose.

Carpe Diem 60 is a 60-minute sunrise endurance challenge on this out-and-back course. At 6:00 AM, you’ll have one hour to cover as much distance as possible with early morning focus. Most Distance Covered Wins

Beat the heat. Seize the morning. Earn your day.

Course Details

The distinctive figure-8 course winds through the breathtaking Hill Country landscape of Pace Bend Park, featuring limestone bluffs, majestic oak trees, and views of Lake Travis. The smooth asphalt surface throughout makes it perfect for both day and night running, with the main loop connecting to a smaller upper loop.

• Surface: 100% smooth, paved asphalt – ideal for consistent pacing

• Elevation: Minimal gain per loop – gentle, predictable terrain

• Loop Length: 1.64 miles in a figure-8 configuration

• Scenery: Limestone bluffs, oak-covered hills, and Lake Travis views

• Aid Station: Access every 1.64 miles at the start/finish hub

• Marking: Fully marked with reflective markers for nighttime visibility

"Whether you're chasing a PR, a qualifying time, or simply want to experience the joy of running fast through a Texas summer night beneath towering oaks and limestone cliffs, the Solstice Circuit Challenge offers a rare opportunity to push your limits under optimal conditions."

Amenities

Aid Station

Fully stocked station at the start/finish hub

Restrooms

Convenient toilet vault facilities

Camping

First-come, first-served sites surrounding the course

Parking

Multiple areas for easy access

Finisher Awards

Medals and custom challenge coins for all finishers

Commemorate your achievement with a premium custom-designed medal featuring Lake Travis. These coins are part of the Race Austin Series: Collector's Challenge, which allows you to exchange three same-tier coins from different Fit Foundation races for a complimentary race entry of the same tier.

Race Austin Coin Challenge Race Austin Coin Challenge Race Austin Coin Challenge

Join Us for an Unforgettable Experience

Race from sunset to stars beneath the Buck Moon on the fastest summer ultra course in the Texas Hill Country.

REGISTER NOW!

Ready to prepare? Check out our comprehensive training guide designed specifically for the Solstice Circuit Challenge.

August 8th, 2025.

This is the culminating event in the Capt'n Karl's Trail Series at one of the best privately owned adventure parks in all of Texas, the amazing Reveille Peak Ranch! This park is located 55 miles northwest of Austin in the historic town of Burnet. The amenities at RPR are first class & we will be taking advantage of this by providing our runners, spectators & volunteers with a series finale party. But first, runners will be treated to unique & spectacular geological formations. Navigating over large rock domes with amazing views, while tackling the most elevation gain of our four venues (3812 ft). This course really has it all….single track, exposure, tree-covered woods, hills & technicality. All to challenge even the most seasoned trail runner.

While every racer will get some cool swag, July 16th is the deadline to get a shirt.

What Is OUTLAST?

OUTLAST is a 6-hour trail endurance challenge where runners complete a 5K every hour, on the hour. Each lap must be finished within the hour to stay in the event. If you finish early, you rest until the next round. Miss a lap, and you’re out.

Complete all six rounds, and you OUTLAST.

This isn't just about speed — it's about pacing, discipline, and mental grit. Whether you're trying to survive all six or win your division, the challenge is the same: show up each hour, push your limits, and stay in it.

Each course is trail-based, with natural terrain, elevation, and unpredictable conditions. You’ll have time between rounds to recover, refuel, and refocus — but not much.

What You Earn:

​4 laps = “Grit Earned” patch

5 laps = “Survivor” patch

6 laps = Premium “OUTLAST” medal

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All participants receive a premium OUTLAST Tee.

Top male and female with the fastest combined 5K times at each event win the 1st Place OUTLAST award.

Finishers are ranked on the national leaderboard—and the fastest runner across all OUTLAST 6-hour events will be crowned National Champion and take home $1,000.

The 1st Place Male and Female 6-hour champions from this race will take home $1000 each. (This is separate from the national leaderboard prize money.)

By the end of the 2026-2027 tour, the top 100 best times nationally will be invited to also compete in the Outlast Championship in 2027.

Frequently Asked Questions:

Do I have to run all 6 laps?

Nope. Run as many as you can. If you complete 4 or 5, you'll still earn a patch. Only those who finish all 6 get the OUTLAST medal and leaderboard ranking.

What happens if I don’t finish a lap in time?

You're out. The next lap starts at the top of the next hour, and only those who completed the last lap on time can continue.

How is the race timed?

Each 5K is timed individually. If you complete all 6, your combined time counts toward the local win and national leaderboard.

Are these trail races or road?

Every OUTLAST race is on trail terrain — dirt, rocks, roots, and elevation. Sometimes some pavement and gravel.

Can I walk?

Yes, as long as you finish the 5K within the hour. But some courses are rugged, and time can sneak up on you.

Are there aid stations?

Yes. There will be water, basic hydration, and snacks at the basecamp/loop start. This is a cupless event — bring your own bottle or hydration system.

What should I bring?

Headlamps are required for all night race participants, trail shoes, hydration system, layers (weather dependent), fuel between laps, and grit.

Can I setup a tent?

Absolutely, bring your own aid station/tent setup.

Is OUTLAST for beginners?

Yes — if you're mentally tough. You don’t need to be fast, just consistent and ready to suffer a little.

How do I win?

If you finish all 6 laps and have the fastest combined time, you win your division (male/female). Winners are also added to the national leaderboard for a shot at the $1,000 national prize & title.

September 12, 2026.

Get your friends and family, and join in on this close to Austin and San Antonio lake party and trail run! The finish line arch will be as close to the edge of Lake Travis as we can get it (Austin area’s famed lake boasting over 9 miles of shoreline)! So when you finish you can cruise straight into the water to cool off and start your floating post-race party! This means, as the lake rises and falls each year, the distance will possibly slightly change, so we'll add "ish" to each distance...and that's perfect when everything and everyone stays mellow.

We’re incredibly thankful for the support of this race by the Travis County Parks Foundation!

While every racer will get some cool swag, August 18 is the deadline to get a shirt.

During registration, we are collecting $10 for one day of access to the park. If runners are staying for more than one day, they will have to pay additional amounts upon entering the park.

Click Here for Tejas Trails Policies (you really do want to know this stuff)

COVID protocols follow current CDC guidelines for race weekend

Register for both The Run and Gun and the Gears and Guns and receive a $10 discount

You must have either an annual US Biathlon license or purchase a $20 one day license with your registration on Bikereg or with cash or check onsite.

RUN AND GUN SUMMER BIATHLON

GEARS AND GUNS MOUNTAIN BIKE BIATHLON

AT FLAT ROCK RANCH, COMFORT

Entry fee:

$45- each event

$80 for both events

One Day US Biathlon license required- $20 one day license available.

Awards given for top three in each category for the Run/ Shoot- Summer Biathlon and the Mountain Bike/ Shoot- MTB Biathlon

Overall Awards given for top three in each category - Summer Biathlon and MTB Biathlon combined times

$10 onsite late fee charged

Registration online at BikeReg-

USA Biathlon sanctioned- USA Biathlon license or $20 one-day Biathlon license payable onsite

Basic biathlon safety rules

Please make sure that you have taken the US Biathlon Basic Rifle Safety Course. You will have to create an account, click on “Education”/ “US Biathlon Courses” / “Basic Rifle Safety Course”

There will be a US Biathlon certified Range Safety Officer onsite to do your assessment during the practice session on Saturday September 6 as well as first thing Sunday morning before the event.

SCHEDULE:

SATURDAY- SEPTEMBER 12, 2026

4 pm- 7 pm Shooting range open for practice- experienced shooters onsite for instruction and tips

4 pm- 7 pm Registration open at https://www.bikereg.com/run-and-gun-gears-and-guns-biathlon-weekend-at-flat-rock-ranch

SUNDAY- SEPTEMBER 13, 2026

RUN AND GUN SUMMER BIATHLON

Run and Shoot event

GEARS AND GUNS MOUNTAIN BIKE BIATHLON

Mountain Bike and Shoot event

7 am- 8 am Registration, equipment check and athlete check-in for both events

8:15 am Mandatory Racers meeting- Gears & Guns MTB Biathlon

8:15 am Start list posted- Individual starts at 30-second intervals

8:30 am Start of Gears and Guns MTB Biathlon

9:30-10 am Registration, equipment check and athlete check-in for Run and Gun Summer Biathlon

10:15 am Mandatory Racers meeting- Run and Gun Summer Biathlon

10:15 am Start list posted- Individual starts at 30-second intervals

10:30 am Start of Run and Gun Summer Biathlon

12ish Award ceremony for both events

Categories for both events:

Men Open 46+

Men Open 45 & under

Women Open

Junior 18 & under category added if there are 4 or more athletes

Other categories might be added at discretion of race promoter

Gun criteria:

22 Long Rifle either Bolt, Pump or Lever Action. All guns must use Open Sights. 5 rounds will be used for each of the three shooting legs.

6” targets at 40 meters

There will be designated Range Safety Officers (RSO) in place that will oversee the safety of the firing range throughout the race and will assist with any issues with firearms.

If you are sharing a gun with someone we will figure the start times so that sharing is possible.

Guns will be racked at the Shooting Range- NO GUNS WILL BE CARRIED ON THE RUN OR THE BIKE.

All Rifles must be pointed in a safe direction at all times, failure to point rifle in safe direction will result in a disqualification (DQ) from the event.

Each shooter must have Eye and Ear protection on before they touch their rifle prior to approaching the firing line.

A mandatory chamber flag is required for every firearm. Homemade one is sufficent (ie zip tie, weed eater line, etc). Must not be able to fall out while rifle is in the rack. https://i.ebayimg.com/images/g/EGsAAOSwsq1crR-w/s-l400.jpg

Rifles will only be loaded when at firing line and in shooting position with rifle pointed in safe direction and under supervision of a Range Safety Officer. All Rifles must be stored and transported with the action open (bolt to the rear) and no ammunition in the firearm unless under the supervision of the Range Safety Officer at the designated shooting position.

5 rounds only, will be prepared in advance and inserted at the firing line. After shooting, magazines will be removed at the firing line with bolts open or a chamber flag inserted before racking gun. Tube fed magazines must have feed tube removed after shooting. Racers will be responsible for picking up and loading their own guns.

If there is a misfire, racer must wait with the rifle downrange for 30 seconds.

Mountain bike legs- racers can get assistance from other racers but no outside assistance is allowed. Anything used for a repair must be carried by the racers.

Summer Biathlon Format (running and shooting): Time trial format-

30-second intervals. All running loops are different.

2 K run loop

Shoot Prone- 5 shots

2 K run loop

Shoot Offhand (standing)- 5 shots

3 K run loop

Shoot Prone- 5 shots

.1 K run loop

Finish

Mountain Bike Biathlon Format (mountain biking and shooting): Time trial format- 30-second intervals. Three mountain bike loops, the last loop is done twice

3 K mountain bike loop

Shoot Prone- 5 shots

4 K mountain bike loop

Shoot Offhand (standing)- 5 shots

3 K mountain bike loop

Shoot Prone- 5 shots

3 K mountain bike loop- repeat of 3rd mtb loop

Finish

In each shooting leg, racer gets 5 shots. For each miss, the racer must run or ride one penalty lap (penalty laps take about 20 seconds for run and 40 seconds for mtb). Example- racer one runs/ rides LOOP 1 and arrives at the shooting range. Racer puts on safety glasses and ear protection if not already wearing it. Racer picks up his racked gun and takes his five round magazine/ container of 5 shots. Racer goes to firing line and loads gun, shoots and hits the target 3 times with 2 misses. Racer unloads gun and leaves firing line back to safety line. Re-racks gun and starts running or gets on bike. Runs/ rides to penalty lap area. Does 2 penalty laps and then continues on to LOOP 2. Comes into shooting area for second time, follows shooting procedure and gets 4 hits, one miss. Runs/ rides to penalty lap, does one lap and then continues on to LOOP 3. Comes into shooting area a third time, follows shooting procedure and gets 5 hits- Runs/ rides to penalty lap, gets to bypass penalty runs/

rides last loop to the finish.

Questions?

Email: [email protected]

Call: 830-896-6864