Boise Greenbelt Relays & 50 Mile Ultra

Sat, May 9, 2026, 8:00 AM MDT

Location: Ann Morrison Park, 1000 S Americana Blvd, Boise, ID 83706
Type: Run

Finish signup on the organizer site (check fees and dates there).

Race feel

Team up for a scenic relay along the Boise River Greenbelt or tackle a new 50-mile solo ultra on one of the Northwest's fastest, flattest courses.

Fun
Scenic
Competitive

Gather your friends for the Boise Greenbelt Relays, a unique team event looping the scenic Boise River Greenbelt. You can form teams of two, four, six, or seven, or challenge yourself with the new 50-mile solo ultra distance. This second annual event offers a flat, fast course through central Boise, Garden City, and Eagle, starting and finishing at Ann Morrison Park. It's a wonderful opportunity to experience the Greenbelt's beauty while enjoying a supportive team atmosphere or pushing your solo limits.

What to expect

Experience the full Boise River Greenbelt on a beautiful, flat course. Run with a team of friends in a relay, or challenge yourself with the new 50-mile solo ultra. Benefit from aid stations, bathrooms, and parking at all six exchange zones.

Standout details

From the organizer

Tackle the full Boise River Greenbelt on a beautiful loop course with a team of your friends on Saturday, May 9th 2026 ! Join us for the only relay race in the Treasure Valley at the second annual Boise Greenbelt Relays. New this year is a FULL 50 Mile Ultra Distance for Solo Runners.

CLICK HERE for additional info on our full website about the event, how it all works and the course!

JOIN US

Teams of two (2) , Teams of four (4) , Teams of six/seven (6 or 7 for one per leg!) or solo runners will collectively complete 45 miles (50 for the Solo Ultra Course) looping the entire span of the Boise River Greenbelt through central Boise, Garden City, Eagle, and Southeast Boise. The race will start and finish at Ann Morrison Park on Saturday, May 9th 2026.

New This Year! The solo event will be FIFTY (50) miles! Come tackle one of the fastest & flatest, non-looped 50-mile courses in the Northwest.

Please note that the course closes at 5PM! If you (running solo) or your team are concerned about finishing within this window, please reach out directly to us at info@boiserunning.com and we'll work with you on specific arrangements.

RELAY LEGS

There will be six (6) different exchange zones along the course with seven (7) "legs".

Each "leg" will vary in distance from five (5) to eight (8) miles.

Teams can choose who runs each leg and who runs more than one (1) leg! It is allowed for a runner to complete consecutive legs. The course is currently being finalized, but expect to run the majority of the Greenbelt from Ann Morrison, to Eagle, to Lucky Peak and back to Ann Morrison.

HOW TO SIGN UP

PLEASE NOTE THAT YOU MUST SIGN UP ALL TEAM MEMBERS IN ONE TRANSACTION DURING REGISTRATION!

For a step by step video tutorial on how to sign up, click HERE.

You must provide the following information for each participant when registering a team:

First & Last Name Email Address Date of Birth Gender Phone Number Address You must also know your "Team Name" when registering a team.

Who is running each leg will need to be communicated to race management before the event, but not during registration. Race management will provide direction on how to submit this information after a team is registered.