Idaho Half Marathons
22 upcoming half marathons across Idaho, updated nightly. Want radius search and maps? Open these in the Race Finder.
When to race: half marathons in Idaho
Idaho has 22 upcoming half marathons over the next 12 months. Among complete calendar months, May 2027 has the most listed races, with 6. Most are around Boise, Sandpoint, Coeur d'Alene. The next one is Boise Half Marathon on November 14 in Boise.
- Nov 20262 races
- Apr 20272 races
- May 20276 races
- Jun 20273 races
- Jul 20272 races
- Aug 20272 races
- Sep 20273 races
- Oct 20272 races
November 2026
- Sat 11/14Boise Half MarathonBoise, ID · Half Marathon · from $45 · register ↗
- Sat 11/21Early Bird Turkey Trot 5K, 10K, 15K, & Half Marathon - BoiseBoise, ID · 5K · 10K · 15K · Half Marathon · from $21 · register ↗
April 2027
- Sat 4/17Race to Robie Creek®Boise, ID · Half Marathon · from $75 · registration closed · register ↗
- Sat 4/24Spring DashCoeur d'Alene, ID · Half Marathon · 10K · 5K · from $35 · register ↗
May 2027
- Sat 5/1WICKED FAST MARATHON & HALF MARATHON IDAHOKellogg, ID · Marathon · Half Marathon · from $79 · register ↗
- Sat 5/8Long Bridge Half-MarathonSandpoint, ID · Half Marathon · 10K · 5K · from $25 · register ↗
- Sat 5/8Over the Top Trail RacePocatello, ID · 30K · Half Marathon · 10K · 5K · Trail · register ↗
- Sat 5/15YMCA Famous Idaho Potato Marathon & Fun RunsBoise, ID · Marathon · Half Marathon · 10K · 5K · from $25 · register ↗
- Sat 5/29CDA MarathonCoeur d'Alene, ID · Marathon · Half Marathon · 10K · 5K · 1 Mile · from $20 · register ↗
- Sat 5/29Redfish Lake Lodge Memorial Weekend RunStanley, ID · 1 Mile · 5K · 10K · Half Marathon · from $50 · registration closed · register ↗
June 2027
- Fri 6/4Sandpoint MarathonSandpoint, ID · 5K · 10K · Half Marathon · Marathon · from $45 · register ↗
- Sat 6/5Spirit of Magic Valley Half Marathon - 10K - 5K - Kids 1 MileTwin Falls, ID · Half Marathon · 10K · 5K · 1 Mile · from $20 · register ↗
- Sat 6/19Race the WolfSandpoint, ID · Marathon · Half Marathon · 5 Miles · 1 Mile · from $30 · register ↗
July 2027
- Sat 7/10Christmas 5K/10K/Half Marathon in July - BoiseBoise, ID · 5K · 10K · Half Marathon · from $25 · registration closed · register ↗
- Sun 7/11Christmas 5K/10K/Half Marathon in July - Idaho FallsIdaho Falls, ID · 5K · 10K · Half Marathon · from $40 · registration closed · register ↗
August 2027
- Sat 8/14Conquer The Peaks of Silver Mountain 1/2 Marathon, 5K, 13KKellogg, ID · Half Marathon · 5K · 8 Miles · Trail · from $95 · register ↗
- Sun 8/22Popsicle 5K/10K/Half - BoiseBoise, ID · 5K · 10K · Half Marathon · from $35 · registration closed · register ↗
September 2027
- Sat 9/427th Annual Pocatello MarathonPocatello, ID · Marathon · Half Marathon · 10K · 5K · 1 Mile · from $8 · register ↗
- Sat 9/11Malad Valley MarathonMalad City, ID · Marathon · Half Marathon · 10K · 5K · 1 Mile · from $15 · register ↗
- Sat 9/18Priest Lake MarathonPriest Lake, ID · 50K · Marathon · Half Marathon · 10K · from $30 · register ↗
October 2027
- Sat 10/9Hayden Lake MarathonHayden Lake, ID · Marathon · Half Marathon · 6.5 Miles · 5K · 0.4 Miles · from $35 · register ↗
- Sat 10/23Haunted Half Marathon and 5k by Run the UndergradRexburg, ID · 5K · Half Marathon · from $10 · registration closed · register ↗
Planning a race
- Choosing a first marathonmoving up from the half, and picking a debut race
More Idaho: Marathons · 5K Races · 10K Races · Ultras · All Idaho races · Browse by state