Privacy Policy Terms of Service Contact Add Your Race Advertise

© 2026 Find The Run. All rights reserved.

11 Upcoming Marathon Races In Idaho, US

Mesa Falls Marathon

Ashton, ID

Saturday, July 18th, 2026

Marathon

Half

10K

BQ

View details for race Mesa Falls Marathon

Malad Valley Marathon

Malad City, ID

Saturday, September 12th, 2026

Marathon

Half

10K

Fast

View details for race Malad Valley Marathon

Priest Lake Marathon

Priest Lake, ID

Saturday, September 19th, 2026

Marathon

Half

10K

View details for race Priest Lake Marathon

Bear Lake Brawl Triathlon

St Charles, ID

Saturday, September 19th, 2026

Half

Marathon

View details for race Bear Lake Brawl Triathlon

Organize a race? Add it free — over 100,000 runners use Find The Run every month.

Add it free Feature it

2026 Northwest Series - Day 5 (ID)

Lewiston, ID

Wednesday, September 23rd, 2026

Half

Marathon

5K

View details for race 2026 Northwest Series - Day 5 (ID)

2026 Northwest Series - Day 6 (ID)

Lewiston, ID

Thursday, September 24th, 2026

10K

Marathon

Half

View details for race 2026 Northwest Series - Day 6 (ID)

Hayden Lake Marathon

Hayden Lake, ID

Saturday, October 10th, 2026

Marathon

Half

10K

View details for race Hayden Lake Marathon

City of Trees Marathon

Boise, ID

Sunday, October 11th, 2026

Marathon

Half

10K

View details for race City of Trees Marathon

Idaho Running Day

Boise, ID

Saturday, October 17th, 2026

Marathon

Half

10K

View details for race Idaho Running Day

Boise River Marathon

Boise, ID

Sunday, May 2nd, 2027

Marathon

Half

10K

Fast

View details for race Boise River Marathon

YMCA Famous Idaho Potato Marathon & Fun Runs

Boise, ID

Saturday, May 15th, 2027

Marathon

Half

10K

Fast

View details for race YMCA Famous Idaho Potato Marathon & Fun Runs

Explore more in Idaho, US

Jump straight to races by distance, month, or type.

Distance

5K 10K Half Marathon Marathon

Month

July August September

Race type

Trail Boston Qualifiers Fast Courses

Run clubs

Run clubs in Idaho