Sulphur Springs Trail Races

Non Profit Event for Runners by Runners


 (read all the information below prior to registering)

Same Pricing as 2017



Participants Guide 
(updated 2017-12-01)

Course Map

Course Directions

Unofficial Practice Runs*

We are suggesting unsupported fun runs on the course (20k loop) on Sunday 8am

  • February 4
  • March 4
  • April 1
  • May 6

You might want to bring any refreshments you require and a copy of the course map.


Aid Stations

At roughly 3K, 9K, 12K, 19K of each loop and at the Start/Finish of each 20K lap.
All runners are advised to carry fluid and food.


Registration Fees - 669 spots remaining

100 Mile Trail Race 32 spots remaining

100 Mile Relay 155 spots remaining

team of 8

50 Mile Trail Race 28 spots remaining

50 K Trail Race 112 spots remaining

25 K Trail Race 195 spots remaining

10 K Trail Race 147 spots remaining

General FAQs

All Races


  • 50% before Feb 1
  • 25% before Mar 1
  • 0% from Mar 1 onwards (the money will have already been spent)


  • none

Transfers and Distance Distances

  • $15 charge before April 15
  • No transfers/changes from April 15 onwards
  • Change to shorter distance – no refund of difference in registration fees
  • Change to longer distance – pay difference in registration fees

Other Notes

  1. NO Dogs (service dogs excepted) or Strollers allowed in any event.
  2. Every reasonable attempt to accommodate dietary restrictions will be made but can not be guaranteed. It is each runners responsibility to inform the race directors of any restrictions in advance of the race by email -
  3. All runners are expected to have reviewed the course map and directions and latest version of the participant guide and make themselves familiar with these documents
  4. Race and medical officials have the right to withdraw any runner at anytime if deemed necessary (no refund will be issued)

100 Mile Team Registration

When you select the 100 mile relay option please note that you need to register your full team at once.

Process for registering a relay team:
  1. enter your name and details
    1. Have this ready for all team members before you register - first and last name, email address, phone number, full address, sex, food restrictions, emergency contact
  2. choose a team name
  3. choose the option to register someone else
  4. choose "existing team"  and select your team name
  5. repeat for all members of the relay team
  6. go to payment page to complete your registration


Course And Trail Description

The Sulphur Springs Trail Run takes place in and around the Dundas Valley Conservation Area in the City of Hamilton, Ontario (formerly the Town of Ancaster). This park is managed by the Hamilton Conservation Authority. All race events will take place on a 20K loop consisting of approximately 98% trails and 2% roads within the conservation area. The 10K event will use only the western portion of the loop.

While you are running the Sulphur Springs Trail Run you will be traveling through the beautiful Dundas Valley Conservation Area which is part of the Hamilton Region Conservation Authority park system and includes part of the famous Bruce Trail from Queenston Heights to Tobermory (approximately 900km).

The park is open to the public on race day so be courteous to and aware of other users. This will include runners, bikers, horseback riders and walkers. Bear in mind that you will be running through wilderness and may encounter deer, coyotes, raccoons, skunks and other animals. IF YOU ENCOUNTER ANY WILDLIFE, MAKE A LOT OF NOISE. DO NOT ATTEMPT TO APPROACH ANY ANIMAL .

Here are some links to videos on YouTube that may help you visualize the course and how some runners experience race day

Brief Schedule


Friday May 25 2018
5PM - 8PMRace Kit pickup - 100 mile solo / 100 mile relay / 100k / 50 mile / 50k ONLY
5PM - 7PMPre Race MANDATORY safety briefing and dinner - 100 mile solo ONLY
4PM - 8PMTrail marking
Saturday May 26 2018
5AM - 530AMRace Kit pickup - 100mi relay / 100k / 50mi ONLY
6AM - 745AMRace Kit pick-up - 50k / 25k / 10k
6AMSTART - 100 mile /100k / 50 mile / 100 mile relay
730AMSTART - 50k / 25k races
815AMSTART - 10k
10AM10k awards ceremony
11AM25k awards ceremony
1215PM10k ultimate CUT-OFF (4 hours)
2PM50k awards ceremony
3PM50 mile awards ceremony
330PM25k ultimate CUT-OFF (8 hours)
930PM50k ultimate CUT-OFF (14 hours)
1030PM100 mile Relay awards ceremony
Sunday May 27 2018
8AM100 mile loop 7 CUT-OFF - must start loop 8 before this time
12PM noon100 mile / 50 mile ultimate CUT-OFF. END OF RACE



More that $90,000 from the proceeds of our Sulphur Springs races have been donated to help support the Dundas Valley Conservation Area.

Take a look around you as you run to see the legacy you are leaving behind thanks to your participation in this race.

 Below, the 2013 race director Joe Hewitt is presenting a cheque for $10,000 from the proceeds of the 2013 race. One project this money helped to fund can be seen in the background. This equipment brought in over 20,000 tons of screenings to repair and upgrade many of the low lying areas of the trail.




Interested in sponsoring Canada's largest and oldest trail ultra?  

Contact Tim and Andrea at








Event Schedule

  • May 25 5:00 PM EDT - Pre-race Dinner (100 mile runners - mandatory)

  • May 25 5:00 PM EDT - Race Kit pick up - 100 mile

  • May 26 5:00 AM EDT - Race Kit pick up - 100 mile relay, 50 mile, 50k

  • May 26 6:00 AM EDT - Start of 100 mile, 100 mile relay, and 50 mile

  • May 26 6:00 AM EDT - Race Kit pick up - 10k, 25k, 50k

  • May 26 7:30 AM EDT - Start of 25k and 50k

  • May 26 8:15 AM EDT - Start of 10k

Contact Information

Event Location

Morgan Firestone Arena, Ancaster, Hamilton, ON, Canada

Click here to view map