Sulphur Springs Trail Race

Saturday May 25th

50K, 50 Miles, 100K, 100 Miles

+ 100 Mile Team Relays!


Sunday May 26th

10K and 20K 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 and streams babble in the background, and if you are lucky enough, deer bounding alongside: truly a runner’s paradise.

Lost in the Woods since 1992, this Trail system has been the site of this Burlington Runners Club Race for more than 30 years; making it the oldest running Ultra Marathon in Canada. Come and see what the hype is all about!

2024 is once again an Athletics Ontario Sanctioned Event

Sulphur Springs is one of the best days of running you will ever experience. The race 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). 

The race offers events for everyone from the casual weekend warrior to the hard-core racer to the corporate team looking for a group challenge.  10K, 20K, 50K, 50M, 100K, 100M + Relays!

We will work to ensure that your race day experience is as wonderful as possible, however, we make NO claims as to how clean you will be by the time you reach the finish line.


Vision 2024 -Western States Endurance Race: Our Mission is to become the first Ultra in Ontario to offer Tickets for the next running of the WSER. We have the course, the history and the experience to be recognized for this privilege, now we just need YOU! 

Help us as we strive for 100 Finishers in our 100 Mile Solo Division!

Returning for the 2024 Running of the Sulphur Springs Trail Race are the Trio of Race Directors from Straw Dog Racing.  

RD Steve Connor        RD Mauro Campanelli       RD Russell Thacker.

We are proud to partner with Burlington Runners Club once again to provide you with an entertaining, challenging, safe and rewarding Race Day experience. 

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.

See you on the trails!