Great Mansfield Outdoors
Event overview
Great Mansfield Outdoors takes place on May 30, 2026, at Mansfield Outdoor Centre and the Dufferin County Forest in Mulmur. The event uses mostly single-track trails and repeats a 25 km loop for multiple distances. It is a sanctioned event through Athletics Ontario and is part of the OUTRace series. Registration has an early-bird deadline of February 1, 2026 and regular registration closes May 24, 2026.
Distances
- 100K Grande: four laps of 25 km; majority single track; about 2000 m elevation.
- 100K Relay: four laps of 25 km; team of 2-4; about 500 m elevation per lap.
- 50K Field Day: two laps of 25 km; majority single track; about 1000 m elevation.
- 25K Half Field: one lap of 25 km; majority single track; about 500 m elevation.
- 10K Fresh: one lap of 10 km; majority single track; about 260 m elevation.
- 5K Fun: one lap of 5 km; majority single track; about 130 m elevation.
Course, aid and race rules
All courses start and finish at Mansfield Outdoor Centre and are marked by flag colours (pink for 25k/50k/100k, yellow for 10k, orange for 5k). Full-serve aid stations are at the start/finish and several points on the 25 km loop; self-serve water-only stations sit between them. The maximum distance between aid stations on the 25 km loop is 4.5 km. The event is cupless - participants must bring their own water receptacle. Trails have many roots; trail shoes are recommended in wet conditions.
Logistics and services
Camping and cabins are available through Mansfield Outdoor Centre with listed nightly rates. Parking is free in rows parallel to the lodge; parking by the barn is reserved. Race kit pick-up is on race day only. First aid is located at the start/finish. Post-race food and beer are available for purchase. Deferrals and transfers are permitted within stated deadlines; cash refunds are not offered, though race credit is available by policy.
Relay specifics
Teams consist of 2-4 runners. Each team member must complete at least one 25 km loop. Exchanges are allowed only in the designated transition area and only one team member may be on course at a time. The team captain handles registration and team edits. Visit the organization's website for the most recent information.