100 mi
100 Mile Team Relay
RelayTime BasedFri, May 23 · 10:00 PM
$838.45
- Past race
- Ultra
- Trail
Sulphur Springs Trail Race 2025
- Hamilton, Ontario
Hosted byBurlington Runners
About Sulphur Springs Trail Race 2025
The Sulphur Springs Trail Race is a scenic and challenging ultra marathon held in Hamilton, Ontario, along the Niagara Escarpment. Established in 1992 as Canada's oldest ultra marathon, the event features a 20K loop course with groomed trails, rolling hills, and steep climbs.
Participants experience over 500m of elevation gain per loop and enjoy natural springs and streams throughout the course. The race serves as a Western States Endurance Run qualifying event and emphasizes sustainability, requiring participants to bring reusable cups or bottles.
Distances and events
100 mi
100 Mile Trail Run
Fri, May 23 · 10:00 PM
$448.22
50 mi
100K Trail Run
Fri, May 23 · 10:00 PM
$336.73
50 mi
50 Mile Trail Run
Fri, May 23 · 10:00 PM
$169.49
50K
50K Trail Run
Fri, May 23 · 10:00 PM
$163.92
20K
20K Trail Run
Fri, May 23 · 10:00 PM
$113.74
10K
10K Trail Run
Fri, May 23 · 10:00 PM
$102.59
Prices from the organizer. Please check the official website for up-to-date times and pricing.
Highlights
Over 500m (1,500 feet) of elevation gain per 20K loop
Western States Endurance Run qualifier
Cup-free event: participants must bring their own reusable cups or bottles
No pets or strollers allowed in the event or start/finish area
Aid stations offer variety but participants should bring specific dietary needs
Poles permitted for distances 50 miles or longer
Course
- Surface
- Trail
- Location
- Hamilton, Ontario
Course details
* 20K loop course on groomed trails and moderately challenging single tracks * Features rolling hills, steep climbs, descents * Scenic route through the Niagara Escarpment including natural springs and streams
About the organizer
Organizer
Burlington Runners
More races like this
Browse nearby and by distance
Listing freshness
The Running Directory combines organizer-provided details, official race links, and ongoing listing research. Always confirm final dates, prices, times, and course details with the race organizer before registering.
Last updated: October 2, 2026
Official registration(opens in a new tab)