Boise Greenbelt Relays & 50 Mile Ultra
- Date Sat 9th May 2026
- Time 8:00AM MDT
- Location Boise, Idaho
- Price $80.50 - $255.40
- Races 4 races
- Distances Ultra
Event summary
Get ready for an exhilarating day of camaraderie and competition at the Boise Greenbelt Relays & 50 Mile Ultra on Saturday, May 9th, 2026! Taking place along the stunning Boise River Greenbelt in Ada County, this unique event invites teams of two, four, or six/seven runners to tackle a total of 45 miles through some of the area’s most scenic landscapes. New this year, solo runners can take on the challenge of a full 50-mile ultra distance, making this event the perfect opportunity for both seasoned athletes and enthusiastic newcomers.
Starting and finishing at Ann Morrison Park, participants will experience a beautifully designed loop course that winds through central Boise, Garden City, Eagle, and Southeast Boise. With six exchange zones and leg distances ranging from five to eight miles, teams can choose their strategy and support one another as they race to the finish line. Whether you’re running as a team or solo, the Boise Greenbelt Relays promises a day filled with excitement, community spirit, and unforgettable memories. Don’t miss your chance to be part of this incredible event!
Starting and finishing at Ann Morrison Park, participants will experience a beautifully designed loop course that winds through central Boise, Garden City, Eagle, and Southeast Boise. With six exchange zones and leg distances ranging from five to eight miles, teams can choose their strategy and support one another as they race to the finish line. Whether you’re running as a team or solo, the Boise Greenbelt Relays promises a day filled with excitement, community spirit, and unforgettable memories. Don’t miss your chance to be part of this incredible event!
Organiser's Description
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.
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 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. [https://www.youtube.com/watch?v=M-KBDvG0jxg]
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.
EMERGENCY CONTACT
The emergency contact information for the individual registering the team will be used as the emergency contact information for the entire team. Please make sure they are available and aware of the event!
EXCHANGE ZONES AND OFFICIAL COURSE TIME LIMIT
The SLAP BRACELET MUST BE HANDED OFF IN EXCHANGE ZONES in order to ensure accurate results, runner tracking, and safety! There will be bathrooms, parking, and aid stations at all Exchange Zones. The course will officially close at 5:00pm. We will be providing limited support after 5:00pm and allowing participants to finish after that time. Please contact info@boiserunning.com with any questions and concerns.
RESULTS
Results will be categorized by Solo (50 Mile Ultra Distance), Teams of Two (2), Teams of Four (4), and Teams of Six+ (6 and 7-person teams). Co-ed teams are allowed and all teams will be included in the same results category in their respective size division. Teams will receive an overall finishing time at the conclusion of the event. Individual leg splits may be tracked by participants but will not be officially reported by Boise Running.
NO TEAM? NO PROBLEM!
Please post in this FACEBOOK GROUP [https://www.facebook.com/share/g/1Yzt5o2sLW/] to create a team with others or see if anyone else is looking for people to join their team. You can also fill out this form [https://docs.google.com/forms/d/1AFO5fWZuDBbPz8BUigBTXP_oo1qbiQUMbmsuh5kWV04/edit?usp=drivesdk]. Filling out the form is NOT a registration or a commitment to register, just a way for us to help you find a team! Lastly, you can email INFO@BOISERUNNING.COM and we will do what we can to get you connected.
REMINDER: YOU MUST SIGN UP ALL TEAM MEMBERS IN ONE TRANSACTION DURING REGISTRATION!
TRANSFERS, REFUNDS, ETC.
Teams of Two (2) must have at total of only two (2) runners. No more, no less. Teams of Four (4) must REGISTER a total of four (4) runners but can run the relay with three (3) runners in the event that their fourth runner can no longer participate. If a Team of Four (4) only has two (2) runners that can still participate, they can email info@boiserunning.com to be transferred to the Team of Two (2) division. Teams of Six+ (6 or 7) must register a total of six or seven runners. If a Team of Six+ only has four (4) or two (2) runners that can still participate, they can be transferred to another division by emailing info@boiserunning.com. A refund will not be provided.
THERE WILL BE NO REFUNDS FOR ANY REGISTRATIONS OF THE BOISE RIVER GREENBELT RELAYS. PARTICIPANT SUBSTITUTIONS AND DIVISION TRANSFERS ARE ALLOWED. Substitutions and division transfers are allowed and must be communicated to race management at info@boiserunning.com by FRIDAY, MAY 8TH AT 6:00PM at the latest.
SWAG
Each participant will receive a swag item that has yet to be announced!
QUESTIONS?
Please check out the FAQs page or email INFO@BOISERUNNING.COM with any questions!
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 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. [https://www.youtube.com/watch?v=M-KBDvG0jxg]
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.
EMERGENCY CONTACT
The emergency contact information for the individual registering the team will be used as the emergency contact information for the entire team. Please make sure they are available and aware of the event!
EXCHANGE ZONES AND OFFICIAL COURSE TIME LIMIT
The SLAP BRACELET MUST BE HANDED OFF IN EXCHANGE ZONES in order to ensure accurate results, runner tracking, and safety! There will be bathrooms, parking, and aid stations at all Exchange Zones. The course will officially close at 5:00pm. We will be providing limited support after 5:00pm and allowing participants to finish after that time. Please contact info@boiserunning.com with any questions and concerns.
RESULTS
Results will be categorized by Solo (50 Mile Ultra Distance), Teams of Two (2), Teams of Four (4), and Teams of Six+ (6 and 7-person teams). Co-ed teams are allowed and all teams will be included in the same results category in their respective size division. Teams will receive an overall finishing time at the conclusion of the event. Individual leg splits may be tracked by participants but will not be officially reported by Boise Running.
NO TEAM? NO PROBLEM!
Please post in this FACEBOOK GROUP [https://www.facebook.com/share/g/1Yzt5o2sLW/] to create a team with others or see if anyone else is looking for people to join their team. You can also fill out this form [https://docs.google.com/forms/d/1AFO5fWZuDBbPz8BUigBTXP_oo1qbiQUMbmsuh5kWV04/edit?usp=drivesdk]. Filling out the form is NOT a registration or a commitment to register, just a way for us to help you find a team! Lastly, you can email INFO@BOISERUNNING.COM and we will do what we can to get you connected.
REMINDER: YOU MUST SIGN UP ALL TEAM MEMBERS IN ONE TRANSACTION DURING REGISTRATION!
TRANSFERS, REFUNDS, ETC.
Teams of Two (2) must have at total of only two (2) runners. No more, no less. Teams of Four (4) must REGISTER a total of four (4) runners but can run the relay with three (3) runners in the event that their fourth runner can no longer participate. If a Team of Four (4) only has two (2) runners that can still participate, they can email info@boiserunning.com to be transferred to the Team of Two (2) division. Teams of Six+ (6 or 7) must register a total of six or seven runners. If a Team of Six+ only has four (4) or two (2) runners that can still participate, they can be transferred to another division by emailing info@boiserunning.com. A refund will not be provided.
THERE WILL BE NO REFUNDS FOR ANY REGISTRATIONS OF THE BOISE RIVER GREENBELT RELAYS. PARTICIPANT SUBSTITUTIONS AND DIVISION TRANSFERS ARE ALLOWED. Substitutions and division transfers are allowed and must be communicated to race management at info@boiserunning.com by FRIDAY, MAY 8TH AT 6:00PM at the latest.
SWAG
Each participant will receive a swag item that has yet to be announced!
QUESTIONS?
Please check out the FAQs page or email INFO@BOISERUNNING.COM with any questions!
Races
-
Solo (50 Mile Ultra Distance)
Incl. $5.50 Fee & Coming Soon!
Sat 9th May 2026 (8:00AM MDT)
$80.50
Please note that this course is slightly different than all the "Relay" Course. It is the exact same for the first 45 miles but will end with an add-on 5 Mile loop. -
Two (2) Person Relay Team
Incl. $9.40 Fee & Coming Soon!
Sat 9th May 2026 (8:00AM MDT)
$149.40
-
Four (4) Person Relay Team
Incl. $11.80 Fee & Coming Soon!
Sat 9th May 2026 (8:00AM MDT)
$191.80
-
Six-Seven (6-7) Person Relay Team
Incl. $15.40 Fee & Coming Soon!
Sat 9th May 2026 (8:00AM MDT)
$255.40
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Ann Morrison Park, 1000 S Americana Blvd, Boise, 83706, ID, United States
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Boise Greenbelt Relays & 50 Mile Ultra
