Marathons in Idaho 2026 | Upcoming Races & Dates

There are 7 marathons in Idaho scheduled for 2026. The next is the Boise River Marathon in Boise on May 2. Idaho marathons run primarily May through October.

Boise River Marathon

Sun, May 2 · Boise, ID Boise

5k5k10k +7

From $35 Open Closing Soon

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 Closing Soon

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

Idaho High Mountain Triathlon

Sat, Oct 2 · Yellow Pine, ID Yellow Pine

Idaho High Mountain Adaptive TriathlonIdaho High Mountain Triathlon Adaptive RelayIdaho High Mountain Relay Triathlon +8

From $100 Closed 20 spots left

Marathons in Idaho — 2026