Logo

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.

Canada Ontario Hamilton

Race information

Website
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

The Wolfpack Ultra Championship

Hamilton

The Wolfpack Ultra Championship takes place in Hamilton, Ontario, showcasing Conservation Halton’s rugged backcountry. The event centers on two 50K formats: a solo 50K Ultra and a 50K Team Relay (five runners of 10K each). Runners navigate technical climbs, winding forest trails and open ridges, wit..

Rare Trail Party

Cambridge - 38 km from Hamilton

The Rare Trail Party will take place in Cambridge on Sunday 21 September 2025.

Willibald Pasture Dash

Ayr - 47 km from Hamilton

Willibald Pasture Dash is a cross-country–style running event held at Willibald Farm Distillery & Brewery on Reidsville Road in Ayr, Ontario. The race offers a 5 km option (two 2.5 km loops) and a 10 km option (four loops) on a pasture course described as a dash through the pasture. Participants enj..

Harvest Hustle - Guelph

Guelph - 44 km from Hamilton

Harvest Hustle in Guelph, Ontario is a family-friendly farm event held at Strom’s Farm and Bakery (5089 Wellington Rd 32). It offers two distances: a 5K Trail Fun Run/Walk through cedar spirals, fields, and sections of a corn maze, plus a 1/2 Mile Corn Maze Walk. The course emphasizes farm terrain a..

Pace for the Donkeys 5k Trail Run

Puslinch - 27 km from Hamilton

Pace for the Donkeys is a 5k trail run held at the Donkey Sanctuary of Canada in Puslinch, Ontario. The event features a 5-kilometre trail route and a new 1-kilometre option, welcoming runners and walkers of all ages and abilities to enjoy scenic fields and trails through the sanctuary. It serves as..

Albion Ascent Trail Race

Hamilton

Albion Ascent Trail Race in Hamilton, Ontario offers a transit-friendly, chip-timed urban trail experience through rivers, forests and waterfalls. Distances are 5K, 10K and 21K, with routes from King’s Forest paved paths to rugged Bruce Trail sections. The 21K features a persistent climb and technic..