USATF-certified 50K in Columbia, MO—home to the 400-year-old Bur Oak–25K option too. Race starts 8 a.m., 3rd Sat.
Rails-to-trails course along MO River and towering bluffs. 23 state records set in 2026. in February – 23 state records were broken in 2026.
06/17/2026
Hey! Our official Facebook Event for Flat Branch Ultra is live. Would you mind clicking Going/Interested and inviting a few local friends? No pressure — it just helps us reach more runners in the community.
Event calendar link: https://www.facebook.com/share/16vY5nL1er/?mibextid=wwXIfr
Presenting Sponsor:
Tryathletics
06/17/2026
No crowds. No city streets. Just you, the trail, and the work.
The 2027 Flat Branch Ultra is waiting.
Choose your distance:
25K
50K — USATF certified
Race day is February 20, 2027, and registration is open now.
The first 25 runners in the new 25K can use coupon code NewRace for $35 off, taking registration from $85 to $50.
Flat, fast, scenic, and built for big goals.
Register here:
https://ultrasignup.com/register.aspx?did=140004
Pictured: A 2026 Flat Branch Ultra runner cruising through the miles.
Presenting Sponsor: Tryathletics
06/16/2026
Are they embracing the chill or entering the witness protection program?
Price increase at the end of this month for both the 50K and brand new 25K. Register here: https://ultrasignup.com/register.aspx?did=140004
Presenting Sponsor: Tryathletics
06/15/2026
Flat Branch Ultra premium hoodie update!
The Flat Branch Ultra hoodie add-on is now open to everyone — not just registered runners.
We’re happy to say these hoodies have been very well received, so if you want one, don’t wait too long. Hoodies are capped at 100 total.
If you are registered for the 2027 Flat Branch Ultra or Flat Branch 25K, the hoodie is $49. You can add it through UltraSignup, or you can Venmo .
If you are not running in 2027 but still want a hoodie, you can get one for $59 total — $49 for the hoodie plus $10 shipping. Please Venmo .
A few people are already claiming theirs, and once we hit 100, they’re gone.
Thank you for the support. We appreciate everyone who has already registered, ordered a hoodie, or helped spread the word about Flat Branch Ultra!
06/15/2026
New races. New hoodie. Price increase coming.
In 2027, HaHa Racing Events is adding LOZ Traverse: Short Course at Lake of the Ozarks Endurance Runs and the brand-new Flat Branch 25K at Flat Branch Ultra.
Premium hoodies are now available as an add-on, and prices increase after June 30.
The first 25 runners in each new race can use coupon code NewRace for $35 off.
Flat Branch Ultra Registration: https://ultrasignup.com/register.aspx?did=140004
Lake of the Ozarks Endurance Runs Registration: https://ultrasignup.com/register.aspx?did=139076
06/14/2026
Cold air. Full start line. Big goals.
Flat Branch Ultra returns February 20, 2027, and the lowest registration rates are available right now. Prices increase after June 30.
Current pricing:
Flat Branch 25K — $85
After June 30: $99
After December 19: $115
Flat Branch Ultra (50K) — $125
After June 30: $150
After December 19: $175
New in 2027: Flat Branch 25K.
The first 25 people to register for the brand new Flat Branch 25K can save $35 with coupon code NewRace during registration. Register here: https://ultrasignup.com/register.aspx?did=140004
Premium hoodies are also available as a $49 add-on and will be limited to the first 100. They have been popular, so if you want one, don’t wait.
Already registered? You can log in to UltraSignup and edit your registration to add a hoodie while supplies last.
Register early, save money, and get ready for a winter trail day at Flat Branch.
Presenting Sponsor: Tryathletics
06/09/2026
An oasis on the Katy Trail, this runner leaves the Halfway Home Aid Station behind.
Shoutout to Gregory Kelley of Joplin and Mikey Armour of Springfield, both taking on the Flat Branch Ultra 50K.
They’ve also signed up for the premium hoodie. If you’ve already registered, you can log back in and add the premium hoodie option to your registration.
Register here: https://ultrasignup.com/register.aspx?did=140004
And don't forget about the all new Flat Branch 25K. $35 off to the first 25 people who register using the code: NewRace.
Presenting Sponsor: Tryathletics
06/08/2026
Shoutout to Craig Nichols from Columbia, Missouri. Craig is running the brand-new Flat Branch 25K.
He took advantage of the NewRace coupon code. The first 25 people to use it get $35 off, taking the price from $85 down to $50. Race day is February 20, 2027. Register here: https://ultrasignup.com/register.aspx?did=140004
(Pictured: 2026 Flat Branch Ultra finisher. Don’t worry—he’s still alive.)
Presenting Sponsor: Tryathletics
Ha Ha Racing Events