Sulphur Springs Trail Race

Hamilton, Canada • 24-25 May 2025

The Sulphur Springs Trail Race, held in the Dundas Valley Conservation Area in Hamilton, Ontario, is Canada’s oldest ultra marathon, running since 1992. The event features multiple distances including 10K, 20K, 50K, 50 miles, 100K, 100 miles, and 100-mile team relays, catering to all levels from casual runners to elite athletes. The course is a 20K loop combining groomed trails and challenging single track with rolling hills and steep climbs, set amidst the scenic Niagara Escarpment with natural springs and wildlife. The race is Athletics Ontario sanctioned and a Western States Endurance Run qualifier, promising a challenging and picturesque trail running experience. Visit the organization's website for the most recent information.

Race information

100 mi
100 Mile Team Relays
100 mi
100 Miles
100 km
100k
50 mi
50 Miles
50 km
50k
20 km
20k
10 km
10k
Visit the organization's website for the most recent information.
Trail runs nearby

Sticks n' Stones Trail Race 2025 is held at Christie Lake Conservation Area in Hamilton, Ontario. All races follow a single rolling dirt loop around the lake, about 5.3 km per lap. Distances offered: 5 km (1 loop), 10 km (2 loops), 26.5 km..

Hike 4 Horses is a fundraising community event held at Sunrise Therapeutic Riding & Learning Centre in Puslinch, Ontario. The event offers two 5 km options: a Leisurely Hike and a Timed Run, inviting participants of varying paces to join th..

Event details The Trails & Tails Classic takes place on October 19, 2025 at Terra Cotta Conservation Area, 14452 Winston Churchill Blvd, Halton Hills, ON L7G 0N9. The event is organized by Canadian Canicross Sports and had 55 participan..

The Beav Trail Race is a multi-distance trail running event held at Hilton Falls Conservation Area near Milton, Ontario, Canada. Distances include 10 km, 25 km, and 50 km, with the 50 km run as two laps of the 25 km course. The 10 km is an..

Murphy’s Mission is a dog-and-run fundraiser held at Christie Lake Conservation Area in Dundas, Ontario. The event offers multiple ways to participate: a 5K Canicross (dog and runner tethered), a 10K Canicross (two 5K loops), a Human-Run 5K..

Oakville Remembrance Trail Run is held at Upper Middle Park in Oakville, Ontario, featuring an 11-kilometer trail course through Lions Valley. Promoted as the first annual event, it aims to honor veterans, first responders, and their famili..