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

Sep

11

Malad Valley Marathon

Malad City, Idaho, United States

$15.00 - $70.00

Running

Marathon Half-Marathon 10K 5K +1

Sep

18

Priest Lake Marathon

Priest Lake, Idaho, United States

$35.00 - $59.99

Running

Ultra Marathon Half-Marathon 10K

Oct

17

Idaho Running Day

Boise, Idaho, United States

Running

Marathon Half-Marathon 10K 5K

Oct

11

City of Trees Marathon

Boise, Idaho, United States

Running

Marathon Half-Marathon 10K 5K

Oct

10

Rush Creek Stampede

Cambridge, Idaho, United States

Running

Half-Marathon 5K 10K

Oct

10

Hayden Lake Marathon

Hayden Lake, Idaho, United States

Running

Marathon Half-Marathon 10.5K 5K +2

Oct

05

Log Virtual 5K/10K/Half & Full Marathon

Boise, Idaho, United States

Running

5K 10K Half-Marathon Marathon

Sep

26

St. Luke's FitOne 5K/10K/Half Marathon

Boise, Idaho, United States

Running

5K 10K Half-Marathon

Aug

22

Eternal Surrender Half Marathon

Coeur d'Alene, Idaho, United States

Running

5K 10K Half-Marathon +1

Jul

18

Mesa Falls Marathon

Ashton, Idaho, United States

Running

Marathon Half-Marathon 10K 5K +1

Jul

18

Running for Children's Rights to Both Parents - 7 of 50 Half Marathons in 50 States - Idaho

Ashton, Idaho, United States

Running

Half-Marathon 5K

Jul

12

Christmas 5K/10K/Half Marathon in July - Idaho Falls

Idaho Falls, Idaho, United States

Running

5K 10K Half-Marathon +2