Idaho Marathons
8 upcoming marathons across Idaho, updated nightly. Want radius search and maps? Open these in the Race Finder.
When to race: marathons in Idaho
Idaho has 8 upcoming marathons over the next 12 months. October is the busiest month for them, with 3. Most are around Boise, Malad City, Priest Lake. The next one is Malad Valley Marathon on September 12 in Malad City.
- Sep 20262 races
- Oct 20263 races
- May 20272 races
- Jun 20271 race
September 2026
- Sat 9/12Malad Valley MarathonMalad City, ID · Marathon · Half Marathon · 10K · 5K · 1 Mile · from $15 · register ↗
- Sat 9/19Priest Lake MarathonPriest Lake, ID · 50K · Marathon · Half Marathon · 10K · from $30 · register ↗
October 2026
- Sat 10/10Hayden Lake MarathonHayden Lake, ID · Marathon · Half Marathon · 6.5 Miles · 5K · 0.5 Miles · from $35 · register ↗
- Sun 10/11City of Trees MarathonBoise, ID · Marathon · Half Marathon · 10K · 5K · from $20 · register ↗
- Sat 10/17Idaho Running DayBoise, ID · Marathon · Half Marathon · 10K · 5K · from $25 · register ↗
May 2027
- Sat 5/15YMCA Famous Idaho Potato Marathon & Fun RunsBoise, ID · Marathon · Half Marathon · 10K · 5K · from $30 · register ↗
- Sat 5/29CDA MarathonCoeur d'Alene, ID · Marathon · Half Marathon · 10K · 5K · 1 Mile · from $20 · register ↗
June 2027
- Fri 6/4Sandpoint MarathonSandpoint, ID · 5K · 10K · Half Marathon · Marathon · from $45 · register ↗
Planning a race
- Boston qualifying timesthe BQ standard for every age group, and what the cutoff has really been
- Choosing a first marathonwhat to look for in a debut race, and what to avoid
More Idaho: 5K Races · 10K Races · Ultras · All Idaho races · Browse by state