4 loops of Carolinian forest in Canada's oldest ultra venue
Other trail races within 187 miles
Four loops through the Dundas Valley Conservation Area total 80km (approximately 50 miles) with 2,080m of cumulative elevation gain on the mostly double-track forest trail. Runners have a 30-hour cutoff, crew access between each loop, and a bag drop at the start/finish area. An approachable but rewarding 50-miler in Canada's oldest ultra race venue.
Some ultra experience recommended
Hamilton, ON, CanadaMay 23, 2026
Sulphur Springs Trail Race 50 Mile is a multi-loop trail race in Hamilton, ON, Canada, held on May 23, 2026. The course covers 80 km, climbs 2,080 m, and has a 30h cutoff.
This edition has its own course and we haven't mapped it yet. The interactive map, elevation profile and aid stations will appear here once the route is confirmed.
Aid stations for this edition aren't published yet. They'll appear here once the route is confirmed.
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