About This Race

A classic timed endurance race on an enclosed 4-mile loop of mild-to-moderately technical terrain at the Sac River Mountain Bike Trails in Springfield, MO. Runners complete as many laps as possible within their chosen time challenge (7:00 AM – 7:00 PM).

Key Dates

Race Day

Jan 23, 2027

139d

Get alerts for Bleak Midwinter Endurance Run

Registration opens, price changes, race updates: straight to your inbox.

Race Planning

Plan Bleak Midwinter Endurance Run with Crewable

Build your aid station plan, organize your crew, and dial in your nutrition strategy. Everything you need to finish strong.

Make Race Plan

Are you the race director for Bleak Midwinter Endurance Run?

Claim this race to manage registration, volunteers, and race-day ops on Endurance HQ.

Claim Your Race