Montana Half Marathons
22 upcoming half marathons across Montana, updated nightly. Want radius search and maps? Open these in the Race Finder.
When to race: half marathons in Montana
Montana has 22 upcoming half marathons over the next 12 months. September is the busiest month for them, with 7. Most are around Bozeman, Whitefish, Seeley Lake. The next one is AIDSPIRIT USA Marathon on September 6 in Harlowton.
- Sep 20267 races
- Oct 20264 races
- Jan 20271 race
- Feb 20271 race
- Mar 20271 race
- May 20271 race
- Jun 20273 races
- Jul 20274 races
September 2026
- Sun 9/6AIDSPIRIT USA MarathonHarlowton, MT · Marathon · Half Marathon · 10K · 5K · from $35 · register ↗
- Fri 9/11The Rut Mountain RunsBig Sky, MT · 50.6 Miles · 30.3 Miles · 17.8 Miles · Half Marathon · 2.5 Miles · Trail · from $70 · register ↗
- Sun 9/13Bozeman Half Marathon & 10KBozeman, MT · Half Marathon · 10K · from $50 · register ↗
- Sun 9/20Montana MarathonBillings, MT · Marathon · Half Marathon · 10K · 5K · from $30 · register ↗
- Sat 9/26Golden Gravel GrinderVirginia City, MT · 85 Miles · 40 Miles · Half Marathon · from $60 · register ↗
- Sat 9/26Hiawatha Fall Trail RunTaft, MT · Marathon · Half Marathon · 10K · Trail · from $45 · register ↗
- Sun 9/27Timberline Trail RunBozeman, MT · 20K · 10K · 5K · 1K · Trail · from $5 · register ↗
October 2026
- Sat 10/3Blacktail ClimbLakeside, MT · 13.5 Miles · 7 Miles · from $30 · register ↗
- Sat 10/3Whitefish Trail BlazerWhitefish, MT · 50K · Half Marathon · 6.8 Miles · 3.4 Miles · 2 Mile · Trail · from $10 · register ↗
- Sun 10/4Back Roads Half & 10kRed Lodge, MT · Half Marathon · 10K · from $30 · register ↗
- Sun 10/18Just for the Helena of ItHelena, MT · Half Marathon · 10K · 5K · 1 Mile · from $35 · register ↗
January 2027
- Sat 1/16Sorry 'Bout That Half Marathon and Team RelayPolson, MT · Half Marathon · from $35 · register ↗
February 2027
- Sat 2/27Snow Joke Half MarathonSeeley Lake, MT · Half Marathon · from $35 · register ↗
March 2027
- Sat 3/20Lucky Hare Half Marathon & 9KKalispell, MT · Half Marathon · 5.8 Miles · from $45 · registration closed · register ↗
May 2027
- Sat 5/22Whitefish Marathon, Half Marathon & 5K Presented by Hammer NutritionWhitefish, MT · Marathon · Half Marathon · 5K · from $30 · register ↗
June 2027
- Sat 6/26Missoula Marathon Weekend of EventsMissoula, MT · 5K · 1.2 Miles · Marathon · Half Marathon · from $10 · registration closed · register ↗
- Sat 6/26Montana Trail SeriesWest Yellowstone, MT · Marathon · Half Marathon · 50K · 25K · 10K · Trail · from $45 · register ↗
- Sat 6/26Yellowstone Park Trail RacesWest Yellowstone, MT · Marathon · Half Marathon · 50K · 25K · 10K · Trail · from $45 · register ↗
July 2027
- Sat 7/10Madison MarathonEnnis, MT · Marathon · Half Marathon · from $80 · register ↗
- Sun 7/11Big Sky MarathonEnnis, MT · Marathon · Half Marathon · from $80 · register ↗
- Sat 7/17Bob Marshall Trail RacesSeeley Lake, MT · 50K · 25K · Marathon · Half Marathon · 10K · Trail · from $45 · register ↗
- Sat 7/31Yellowstone Park Trail RacesWest Yellowstone, MT · Marathon · Half Marathon · 10K · 5K · 50K · Trail · from $45 · register ↗
Planning a race
- Choosing a first marathonmoving up from the half, and picking a debut race
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