A classic forest 20K through Hamilton's Dundas Valley
Other trail races within 187 miles
A single loop of the iconic Dundas Valley 20K circuit with 520m of elevation gain on a mix of double-track and singletrack Carolinian forest trail. Run on Sunday morning alongside hundreds of other runners, with the energy of 100-milers finishing their final loops in the background.
Suitable for first-timers
Hamilton, ON, CanadaMay 24, 2026
Sulphur Springs Trail Race 20K is a loop trail race in Hamilton, ON, Canada, held on May 24, 2026. The course covers 20 km and climbs 366 m.
| Location | km | Elevation | Cutoff |
|---|---|---|---|
Start Start | 0.0 | 260 m | — |
Aid Station 1 Aid Station | 4.3 | 156 m | — |
Aid Station 2 Aid Station | 8.3 | 168 m | — |
Aid Station 3 Aid Station | 13.1 | 211 m | — |
Finish Finish | 19.9 | 260 m | — |
Aid station details for this race are still being filled in. Cutoffs and access rules come from the race’s own published information and can change — check the official race details before planning around them.
Sign in for race-day weather at every station, points of interest, segment-by-segment analysis, pacing, and to save this race to your calendar.
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