Great Mansfield Outdoors
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Event overview
Great Mansfield Outdoors takes place on May 30, 2026 at Mansfield Outdoor Centre in Mulmur (937365 Airport Rd). The event uses single-track trails in the Mansfield Outdoor Centre and Dufferin County Forest. It is part of OUTRace and will be a sanctioned Athletics Ontario event. The 2026 program adds a 100K Solo and 100K Relay option.
Race details
Distances and format:
- 100K - four laps of 25 km, about 2000 m total elevation gain.
- 100K Relay - teams of 2-4, four 25 km laps, about 500 m elevation gain per lap.
- 50K - two laps of 25 km, about 1000 m elevation gain.
- 25K - one lap of 25 km, about 500 m elevation gain.
- 10K - one lap of 10 km, about 260 m elevation gain.
- 5K - one lap of 5 km, about 130 m elevation gain.
Course and services: All courses start and finish at Mansfield Outdoor Centre, are primarily single track, and are described as rooty. Aid stations are a mix of full-serve and self-serve water-only stations; full-serve locations include the start/finish and several points on the 25K loop. The maximum distance between aid stations on the 25K loop is 4.5 km. The event is cup-free; racers must bring their own water receptacles.
Logistics and policies: Camping and cabins are available through Mansfield Outdoor Centre with listed nightly rates. Parking is free in rows parallel to the lodge; the area beside the barn is reserved. Drop bags are accepted at a designated aid station for 100K Solo and 50K runners. Entries may be deferred or refunded as a race credit until April 30, 2026; bib transfers are permitted until May 15, 2026. Visit the organization's website for the most recent information.
