Sulphur Springs Trail Race
Saturday May 23rd
100 Miles, 100K, 50 Miles, 50K Trail Races
50 Mile Night Relay & 100 Mile Team Relay
Sunday May 24th
20K and 10K Trail Races
Course Details: The Sulphur Springs Trail Race is a 20K loop course, and offers trail runners of all skills a little something to enjoy - with a mixture of groomed trail to moderately challenging single track, with rolling easy hills and steep climbs and descents. All nestled in the beautiful setting of the Niagara Escarpment where natural springs flow and streams babble in the background; and if you are lucky enough, you'll catch a glimpse of a deer bounding along as you run by. Truly a runner’s paradise.
Lost in the Woods since 1992: This Trail system has been the site of this Burlington Runners Club Event for more 33 years; making it the oldest running Ultra Marathon in Canada. Come and see what the hype is all about!
The Sulphur Springs Trail Race is once again an Athletics Ontario sanctioned event. We are proud to partner with AO for the safety of the athletes.
One of the best days of running you will ever experience is what awaits you at Sulphur Springs. The rolling course weaves its way on a 20K loop through the beautiful trails of the Dundas Valley Conservation Area in the City of Hamilton, Ontario (formerly the Town of Ancaster). Each loop offers you over 500m of elevation gain and an opportunity to regroup, refuel and recharge with your team at the crew tent area.
The race offers events for everyone from the casual weekend warrior to the hard-core racer and the corporate team looking for a group challenge. 10K, 20K, 50K, 50 Miles, 100K, + 100 Miles, with two Team Relay options: 50 Mile Night Relay (up to 4 runners), or the 100 Mile Team Relay (up to 8 runners).
This race sells out every year, don't be on the sidelines, get in and get your shoes dirty!
RECENT UPDATES:
BIG NEWS: SSTR is now a WSER qualifying race... only one in Ontario!
Returning as your Race Management Team for the 2026 Sulphur Springs Trail Race are the duo from Straw Dog Racing:
Mauro Campanelli Steve Connor
We are proud to partner with Burlington Runners Club to provide you with an entertaining, challenging, and safe race weekend
Please help us to thank our sponsors by providing support for them throughout the year.
Email us below if you have any questions about race day, and follow us on our socials to track race updates, training run schedules, and all other race related news.
See you on the trails!