Sep 12, 2026 · 8:00 AM · Malad City, ID
Malad Valley Marathon
1M5K10KHalf MarathonMarathon
- Price
- $20-$80
Marathons in Idaho
Every upcoming Marathon race we know about in Idaho. Where a detail isn't confirmed, we mark it unknown rather than guessing.
Race results
Where
When
Showing 8+ of 8 races · loading the full list…
Sep 19, 2026 · 7:00 AM · Priest Lake, ID
Priest Lake Marathon
10KHalf MarathonMarathonUltra
- Price
- $48.50-$85.30
Oct 10, 2026 · 7:30 AM · Hayden Lake, ID
Hayden Lake Marathon
5KHalf MarathonMarathon
- Price
- Free-$144.10
- Field size
- 25 · based on the organizer's entry cap
Oct 11, 2026 · 8:00 AM · Boise, ID
City of Trees Marathon
5K10KHalf MarathonMarathon
- Price
- $59.69-$112.59
May 2, 2027 · 6:30 AM · Boise, ID
Boise River Marathon
5K10KHalf MarathonMarathonflat and fast
- Price
- $38.53-$64.98
May 15, 2027 · 7:00 AM · Boise, ID
YMCA Famous Idaho Potato Marathon & Fun Runs
5K10KHalf MarathonMarathonflat and fast
- Price
- $38.96-$97.68
May 29, 2027 · 7:00 AM · Coeur d'Alene, ID
CDA Marathon
1M5K10KHalf MarathonMarathonCertified course · per organizer
- Price
- Free-$107