Marathons in Idaho 2026 | Upcoming Races & Dates

There are 7 marathons in Idaho scheduled for 2026. The next is the Idaho Running Day in Boise on October 17. Idaho marathons run primarily October through September.

Hayden Lake Marathon

Sat, Oct 10 · Hayden Lake, ID Hayden Lake

Kids Fun Run5KQuarter Marathon +3

From $20 Open Closing Soon

Idaho Running Day

Sat, Oct 17 · Boise, ID Boise

5K10KHalf Marathon +1

From $25 Open Closing Soon

Boise River Marathon

Sun, May 2 · Boise, ID Boise

5k5k10k +7

From $35 Open

YMCA Famous Idaho Potato Marathon & Fun Runs

Sat, May 15 · Boise, ID Boise

5K Spud Run5K Spud Run10K +5

From $30 Open

CDA Marathon

Sat, May 29 · Coeur d'Alene, ID Coeur d'Alene

Kids Fun RunKids Fun Run5K +12

From $20 Open

Sandpoint Marathon

Fri, Jun 4 · Sandpoint, ID Sandpoint

5k Run10k RunSandpoint 1/2 Marathon +1

From $45 Open

27th Annual Pocatello Marathon

Sat, Sep 4 · Pocatello, ID Pocatello

0.2 Mile1 Mile5K Wheelchair/Handcycle +9

From $0 Open 2 spots left

Malad Valley Marathon

Sat, Sep 11 · Malad City, ID Malad City

1 Mile Fun Run1 Mile Fun Run5K +7

From $15 Open

Marathons in Idaho — 2026

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