Sulphur Springs Trail Race
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Event overview
The Sulphur Springs Trail Race is scheduled for Saturday, May 23, and Sunday, May 24, in the Dundas Valley Conservation Area in the City of Hamilton, Ontario (formerly the Town of Ancaster). The event is presented by Burlington Runners Club and includes individual and team events across multiple distances. The race is sanctioned by Athletics Ontario and designated as a Western States Endurance Run qualifying race.
Distances offered
- 100 Miles
- 100K
- 50 Miles
- 50K
- 50 Mile Night Relay (teams up to 4 runners)
- 100 Mile Team Relay (teams up to 8 runners)
- 20K
- 10K
Course and format
The course uses a 20K loop through the Dundas Valley trails. Surface types include groomed trail and moderate single-track. Each loop contains rolling hills plus sections of steep climbs and descents, with over 500 m of elevation gain per loop. The loop format provides regular opportunities for crew access at a dedicated crew tent area. The event runs multiple races over the weekend, allowing participants to complete one or more loops depending on chosen distance or relay format.
History and organization
The trail system has hosted this Burlington Runners Club event since 1992. Race management for 2026 is provided by Straw Dog Racing in partnership with Burlington Runners Club. Visit the organization's website for the most recent information.
