October running races

Races happening in October. When we're missing a detail, we leave it blank rather than guess.

Race results

Showing 46+ of 4403 races · loading the full list…

Thu, Oct 1, 2026 · 12:00 AM · Cornwall, CT

IronHike Olympus Mons Ultra | Run, Power Hike, Walk. | Mohawk Mountain, Connecticut | Fall | October | Solo - 72,590 feet of elevation gain, possibly more than any endurance event of its kind. - 100 Mile + Elevation Endurance Ultra Trail Marathon - 152 + Miles - 84 Hour - We are redefining race day. Tags: Iron Hike, 100 Miler, Oct, CT, Cornwall, New England, Loop, Ski Slope, Skratch Labs, Hardest Ultra, Hard Ultra

Ultra
Price
$1,495
Register (opens in a new tab)Details

Thu, Oct 1, 2026 · 12:00 AM · Cornwall, CT

IronHike Olympus Mons Ultra | Run, Power Hike, Walk. | Mohawk Mountain, Connecticut | Fall | October | Trail Buddy Flex Relay (2 Mountain Athletes) - 72,590 feet of elevation gain, possibly more than any endurance event of its kind. - 100 Mile + Elevation Endurance Ultra Trail Marathon - 152 + Miles - 84 Hour - We are redefining race day. Tags: Iron Hike, 100 Miler, Oct, CT, Cornwall, New England, Loop, Ski Slope, Skratch Labs, Hardest Ultra, Hard Ultra

Ultra
Price
$2,551.08
Register (opens in a new tab)Details

Browse related categories

5Ks in October10Ks in OctoberHalf Marathons in OctoberUltras in OctoberMarathons in October10 Milers in OctoberNovemberDecemberSeptemberFebruaryJanuaryAprilMarchMayAlaskaAlabamaArkansasArizonaCaliforniaColorado