River of No Return Endurance Runs

🗓️Today- March 31 - Last day to register before price increase ! Link in Bio

⏳ Price increase coming soon (after March 31)
Thinking about River of No Return? Now’s the time to commit.
Join us June 20 in Challis, Idaho for the 13th running of RONR—an experience built on scenic trails, supportive aid stations, and a welcoming community for both first-time trail runners and seasoned racers.
Distances:
• 32K – starts in Bayhorse, finishes at Challis City Park
• 55K – starts/finishes in Challis, with a scenic out-and-back to Bayhorse (mile 16)
The 108K is out there too—if you're up for THE BIG ONE.
Secure your spot before prices go up:
👉 Register on UltraSignup: https://ultrasignup.com
Come run Idaho with us.

River of No Return Endurance Runs Register Now!

Last call before prices go up ⏳
If RONR has been on your mind, this is your sign. Join us June 20th in Challis for an unforgettable day in Idaho trails—big views, welcoming vibes, and a finish line that feels like home.

Choose your distance : 32K, 55K, 108K

Price increase after March 31st 💰
Register via link in bio.
challisidaho mountainrunning

🏃‍♀️One of the best parts of race day at the River of No Return Endurance Runs is the atmosphere along the course.
🏃‍♀️Runners moving through historic Bayhorse, volunteers cheering along the fence lines, and Idaho canyon walls towering above the trail.
🏃‍♀️Moments like this are what make the day memorable.
🏃‍♀️Join us for the 13th running of the River of No Return Endurance Runs on June 20, 2026 in Challis, Idaho.

If you’ve been thinking about one of the races (32K,55K,108K), this is a great time to register.
💰Entry fees increase March 31.💰
➡️https://ultrasignup.com/register.aspx?did=133125

River of No Return Endurance Runs Register Now!

🚍 32K Runners — Important Start Line Update
For 2026, 32K runners will need to purchase a $20 bus pass for transportation to the start at Bayhorse.
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In past years we covered this cost, but due to increased expenses we’re no longer able to do so.
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We strongly encourage taking the shuttle — parking at Bayhorse is very limited and we want race morning to feel smooth, safe, and stress-free for everyone. 7:15am bus departs from City Park.
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Grab your bus pass at the link in bio.
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We appreciate your understanding and can’t wait to welcome you to Challis on June 20th for the 13th running of RONR. 🌲🏔️ -Paul
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RunIdaho ChallisIdaho

🚍 32K Transportation Update – Please Read

For the 2026 River of No Return Endurance Runs (June 20th), 32K runners will need to purchase a $20 bus pass for transportation to the start line at Bayhorse.

In previous years we were able to cover the cost of buses. Due to rising operational expenses, that is no longer possible. We appreciate your understanding as we work to keep the event sustainable and well-organized.

We strongly encourage runners to take the shuttle. Parking at Bayhorse is extremely limited, and bussing helps us:
• Keep race morning organized
• Reduce congestion at the historic site
• Ensure runners arrive safely and on time

BUS DEPARTURE FROM CITY PARK 7:15am

👉 Purchase your bus pass here:
https://ultrasignup.com/shopping.aspx?dtid=64422

We’re looking forward to welcoming you to Challis for the 13th running of RONR!

-paul

UltraSignup Store

RONR's Ben and Celia Leber, who captain the Buster Lake (Now Bruno Cabin) Aid Station on the 108K are adding good stuff to the Challis Community and we can't thank them enough for their efforts!
https://bighillnordic.com

⛰️Bayhorse is a moment everyone remembers.

This is the start of the 32K - quiet nerves, big smiles, and miles of Idaho trail ahead.

For 55K and 108K runners, Bayhorse comes later - a 16 mile turning point for them before continuing their journeys to Challis.

Three distances. One incredible stretch of Idaho.

🏃🏼‍♀️32K- a perfect 1st trail race or mountain challenge
🏃🏼‍♀️55K- a true step-up distance
🏃🏼‍♀️108K- deep, rugged and unforgettable

📍Challis, Idaho
🗓️ June 20,2026

River of No Return Endurance Runs Register Now!

Celebrating 10+ Years of the Idaho Trail Ultra Series !~
For over a decade, we’ve been blazing trails across Idaho, and this year we’re turning it up a notch! 🚀

Alongside our classic River of No Return and all your favorite Idaho ultras, we’re rolling out a brand-new Short Series for those looking to get a taste of the ultra vibe with a little less mileage but all the adventure.

And hey, to kick things off in style, we’re hosting our annual Idaho Trail Ultra Series party this Saturday in Boise! Come celebrate with us, meet fellow runners, the race directors and get all the scoop on the upcoming races. It's pot luck so bring something for all to eat, and/or drink!

Let’s make this year the best one yet!

https://www.facebook.com/idahotrailultraseries

River of No Return Endurance Runs Register Now!

Saturday January 10th- Boise

Don't miss the 2025 Year End ITUS Party! Exciting changes are coming!
Come test your luck in the free race entry drawings and don't forget we need 2026 Ambassadors - are you going to throw your name in the hat??