
Boise Greenbelt Relays & 50 Mile Ultra is a running race on April 24, 2027 in Boise, ID, with entry fees from $75 to $240.
Boise Greenbelt Relays | Saturday, April 24, 2027
Run the entire Boise River Greenbelt with your friends at the Treasure Valley’s only relay race! This 45-mile loop starts and finishes at Ann Morrison Park and passes through Garden City, Eagle, and Southeast Boise. Going solo? Take on our 50-mile ultra, one of the fastest and flattest non-looped 50-milers in the Northwest.
Divisions
Solo (50 miles available to this option only)
Team of 2
Team of 4
Team of 6
Team of 7
Co-ed teams are welcome and compete in the same division.
How the Relay Work
The course has 7 legs of 5–8 miles and 6 exchange zones.
Your team decides who runs each leg, and runners can run multiple legs, including consecutive ones.
Teams must hand off their slap bracelet inside each exchange zone.
Every exchange zone has bathrooms, parking, and an aid station.
Registering a Team
All team members must be registered in one transaction. You’ll need your team name and each runner’s:
First and last name
Email address
Date of birth
Gender
Phone number
Address
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
65°
Typical Low
41°
Chance of Rain
29%
Based on US Climate Normals data from Boise Air Terminal, 3 mi from the venue.
Population
235,701
as of 2023
City Elevation
2,866 ft
Nearest Airport
BOI
Boise Air Terminal/Gowen Field · 1 mi
Time Zone
Mountain Time
From Endurance Grid
A mid-size host city. Enough lodging and amenities to keep race weekend easy, without big-city sprawl.
Every finish line starts with a single decision. Claim your spot at Boise Greenbelt Relays & 50 Mile Ultra, put it on the calendar, and turn “someday” into a start date.
166
Days to train
Plan your training, log every workout, and track your progress all the way to race day in the Endurance Grid app.


Boise Greenbelt Relays & 50 Mile Ultra
Apr 24, 2027