Sulphur Springs Trail Race
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Sulphur Springs Trail Race
Sulphur Springs is scheduled for May 22, 2027 at the Dundas Valley Conservation Area in Ancaster, Ontario. Hosted by the Burlington Runners Club since 1992, the event is noted as Canada’s oldest continuously running ultramarathon.
The course uses 10K and 20K loop circuits. Longer distances are completed by repeating these loops, allowing frequent returns to the start/finish area for crew access. Each 20K loop includes more than 500 metres of elevation gain and features groomed trails, flowing double track, moderately technical singletrack, rolling runnable sections, and short steep climbs and descents. The route passes beneath a Carolinian forest canopy, crosses streams, and runs along sections of the Niagara Escarpment.
Aid support is provided on each 20K loop with four fully stocked aid stations offering hydration and nutrition. Overnight aid for longer races includes hot food in addition to standard offerings. The event is cup free; runners must carry a reusable cup, bottle, or hydration system. Portable toilets are available at aid stations and the start/finish area. The race is sanctioned by Athletics Ontario. Official course maps and GPX files are provided by the event organizer.
Sulphur Springs also serves as a Western States qualifier with specific finishing standards for the 100K and 100 Mile distances. Visit the organization's website for the most recent information.
