Marathon races in Idaho, United States — 2026 running calendar

Boise Marathon

Boise, Idaho, United States

20 Jun, 2026 (Sat)

$55.00 - $125.00

Running

Marathon Half-Marathon 10K 5K

Race the Wolf

Sandpoint, Idaho, United States

20 Jun, 2026 (Sat) – 21 Jun, 2026

$45.00 - $120.00

Trail running, Running

8K 1.6K Marathon Half-Marathon

Mesa Falls Marathon

Ashton, Idaho, United States

18 Jul, 2026 (Sat)

$15.00 - $85.00

Running

Marathon Half-Marathon 10K 5K +1

Malad Valley Marathon

Malad City, Idaho, United States

12 Sep, 2026 (Sat)

$20.00 - $80.00

Running

Marathon Half-Marathon 10K 5K +1

Priest Lake Marathon

Priest Lake, Idaho, United States

19 Sep, 2026 (Sat)

$45.00 - $80.00

Running

Ultra Marathon Half-Marathon 10K

Hayden Lake Marathon

Hayden Lake, Idaho, United States

10 Oct, 2026 (Sat)

Free - $125.00

Running

Marathon Half-Marathon 10.5K 5K +2

City of Trees Marathon

Boise, Idaho, United States

11 Oct, 2026 (Sun)

$45.00 - $85.00

Running

Marathon Half-Marathon 10K 5K

Idaho Running Day

Boise, Idaho, United States

17 Oct, 2026 (Sat)

$40.00 - $85.00

Running

Marathon Half-Marathon 10K 5K

CDA Marathon

Coeur d'Alene, Idaho, United States

23 May, 2026 (Sat) – 24 May, 2026

Running

1.6K Marathon Half-Marathon 10K +3

YMCA Famous Idaho Potato Marathon & Fun Runs

Boise, Idaho, United States

16 May, 2026 (Sat)

Running

Marathon Half-Marathon 10K 5K

Boise River Marathon

Eagle, Idaho, United States

02 May, 2026 (Sat)

Running

Marathon Half-Marathon 10K 5K

Race Through Idaho 1M, 5K, 10K, 13.1, 26.2 - Now Only $20!

Boise, Idaho, United States

01 Feb, 2026 (Sun) – 31 Dec, 2026

$20.00

Running

1.6K 5K 10K Half-Marathon +1