Sulphur Springs Trail Race
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Sulphur Springs Trail Race 2026 : event description
The Sulphur Springs Trail Race takes place on May 23 and 24, 2026 at Morgan Firestone Arena in Ancaster, Hamilton, Ontario, Canada. The event uses a looped 20 km course inside Dundas Valley Conservation Area, an old Carolinian forest.
Each 20 km loop includes over 500 m (about 1500 ft) of elevation gain and runs mostly on double-track trail. The course is supported by four aid stations supplying water and Skratch Labs hydration. Long-distance aid stations provide food throughout day and night and port-a-potties are available at each aid station and in larger numbers at the start/finish. This is a cup-free event; participants must bring their own reusable container.
Event formats cover a wide range of distances and team options:
- 100 Mile Solo (8 x 20K laps, 160 km / 100 miles)
- 100K (5 x 20K loops)
- 50 Mile (4 x 20K loops)
- 50K (1 x 10K plus 2 x 20K loops)
- 20K
- 10K
- 100 Mile Team Relay (maximum 8 runners)
- 50 Mile Night Relay (maximum 4 runners)
The 100K and 100 Mile are Western States qualifying races for 2027 with specific finish-time requirements to earn a ballot. Strawdog Racing and Burlington Runners manage the event, which is sanctioned by Athletics Ontario. The 2026 Runner’s Guide contains rules, GPX files and further details. Visit the organization's website for the most recent information.
