Half-Marathon races in Idaho, United States — 2026 running calendar

Rush Creek Stampede

Cambridge, Idaho, United States

10 Oct, 2026 (Sat)

$40.00 - $55.00

Running

Half-Marathon 5K 10K

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

Boise Half Marathon

Boise, Idaho, United States

14 Nov, 2026 (Sat)

$55.00

Running

Half-Marathon

Race to Robie Creek®

Boise, Idaho, United States

17 Apr, 2027 (Sat)

$75.00

Running

Half-Marathon

Redfish Lake Lodge Memorial Weekend Run

Stanley, Idaho, United States

23 May, 2026 (Sat)

Running

1.6K 5K 10K Half-Marathon

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

Long Bridge Half-Marathon

Sandpoint, Idaho, United States

09 May, 2026 (Sat)

Running

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