Sulphur Springs Trail Race
May 22nd 2027
Ancaster, ON
50 KM |
50 Miles |
100 KM |
100 Miles
The Sulphur Springs Trail Race is the FIRST Western States Endurance Run Qualifying Race in Ontario. This unbelievable 20K looped course is a hidden gem inside the Dundas Valley Conservation Area of Ancaster, Ontario. We offer 10K, 20K, 50K, 50 Mile, 100K, and 100 Mile race options. Plus a Team 100 Mile Relay.
100K Finishers with a finishing time in under 18 hours will be granted a ballot in the WSER100 Bib Lottery.
100 mile Finishers with a finishing time in under 30 hours will be granted a ballot in the WSER100 Bib Lottery.
With wildlife teeming through this old Carolinian Forest, and waterfalls cascading over rocks along the course, your legs may barely notice traversing the over 460M /1500 ft of elevation per 20K loop. Expect to be challenged on this (mostly) double track trail system as you are supported with FOUR fully stocked Aid Stations along the way.
Upcoming Races
May 22 2027
50 KM
First you will run the shorter 10K loop, followed by 2 passes of the main 20K loop. After each loop, you are at the Main Aid station and your support crew/friends.
Total elevation Gain/Loss is 3750 Feet over the 50K.
3,750
3,750
ft.
Multiple Loop
10 Aid
Stations
30:00 Cutoff
3
Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3
Surface Rating
Some rocks, root, and/or ruts
May 22 2027
50 Miles
4 Loops of our 20K Course. Each Loop has 460m/1500ft of elevation gain and loss.
4 Aid Stations per loop.
6,000
6,000
ft.
Multiple Loop
16 Aid
Stations
3
Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3
Surface Rating
Some rocks, root, and/or ruts
May 22 2027
100 KM
5 times around our 20K Loop. Each loop is 460m/1500ft of elevation gain/loss.
To get WSER Status, you must finish within 18 Hours.
7,500
7,500
ft.
Multiple Loop
20 Aid
Stations
3
Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3
Surface Rating
Some rocks, root, and/or ruts
May 22 2027
100 Miles
8 times around our beautiful 20K Looped course. Each loop offers 460m/1500ft of elevation gain/loss.
12,000
12,000
ft.
Multiple Loop
32 Aid
Stations
3
Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3
Surface Rating
Some rocks, root, and/or ruts
Additional Distances
This event also has the following sub ultra distances
10 KM
20 KM
Results
100 Miles
| Date | Finishers | Top Result (F) | Top Result (M) |
|---|---|---|---|
| 05/23/26 | 44 | 26:53:27 | 17:40:47 |
| 05/24/25 | 97 | 17:22:46 | 14:38:21 |
| 05/25/24 | 78 | 17:18:57 | 16:58:22 |
| 05/27/23 | 45 | 23:21:37 | 18:47:31 |
| 05/28/22 | 33 | 19:52:08 | 17:25:28 |
| 09/26/20 | Race Cancelled | ||
| 05/25/19 | 15 | 21:34:40 | 18:26:10 |
| 05/26/18 | 41 | 20:52:41 | 18:49:21 |
| 05/27/17 | 35 | 24:45:00 | 20:43:07 |
| 05/28/16 | 27 | 23:18:32 | 15:33:34 |
| 05/23/15 | 38 | 18:27:39 | 17:50:36 |
| 05/24/14 | 27 | 17:49:54 | 18:07:31 |
| 05/25/13 | 57 | 18:57:59 | 15:37:24 |
| 05/26/12 | 42 | 19:53:52 | 15:40:22 |
| 05/28/11 | 39 | 20:55:45 | 17:49:16 |
| 05/29/10 | 36 | 19:59:38 | 17:12:37 |
| 05/29/10 | 35 | 19:59:38 | 17:12:37 |
| 05/23/09 | 39 | 21:47:28 | 18:40:04 |
| 05/24/08 | 32 | 19:20:35 | 18:43:43 |
| 05/26/07 | 30 | 18:57:06 | 17:14:53 |
| 05/27/06 | 31 | 19:56:14 | 18:35:56 |
| 05/28/05 | 24 | 20:51:25 | 18:08:25 |
| 05/29/04 | 17 | 19:40:00 | 19:10:00 |
| 05/24/03 | 8 | 21:42:11 | 19:58:54 |
| 05/25/02 | 13 | 28:23:53 | 19:26:25 |
| 05/26/01 | 16 | 23:36:49 | 18:47:53 |
100 KM
| Date | Finishers | Top Result (F) | Top Result (M) |
|---|---|---|---|
| 05/23/26 | 152 | 9:58:52 | 8:58:02 |
| 05/24/25 | 226 | 9:55:09 | 8:07:22 |
| 05/25/24 | 179 | 11:00:17 | 8:26:02 |
| 05/27/23 | 59 | 11:43:27 | 8:50:08 |
| 05/28/22 | 32 | 13:41:01 | 11:52:56 |
| 09/26/20 | Race Cancelled | ||
| 05/27/17 | 38 | 10:29:39 | 10:46:29 |
50 Miles
| Date | Finishers | Top Result (F) | Top Result (M) |
|---|---|---|---|
| 05/23/26 | 75 | 10:02:45 | 8:15:11 |
| 05/24/25 | 79 | 9:00:53 | 7:36:44 |
| 05/25/24 | 53 | 7:08:00 | 7:52:33 |
| 05/27/23 | 62 | 7:56:44 | 6:28:05 |
| 05/28/22 | 41 | 8:41:26 | 7:54:23 |
| 09/26/20 | Race Cancelled | ||
| 05/25/19 | 99 | 8:56:17 | 7:19:56 |
| 05/26/18 | 101 | 8:51:17 | 6:56:25 |
| 05/27/17 | 70 | 8:11:00 | 6:44:13 |
| 05/28/16 | 83 | 9:15:40 | 7:15:04 |
| 05/23/15 | 87 | 7:16:41 | 6:39:44 |
| 05/24/14 | 83 | 8:02:18 | 6:48:31 |
| 05/25/13 | 74 | 8:01:03 | 6:07:00 |
| 05/26/12 | 79 | 7:51:34 | 6:49:43 |
| 05/28/11 | 47 | 7:42:34 | 7:45:07 |
| 05/29/10 | 69 | 8:14:57 | 7:14:41 |
| 05/29/10 | 70 | 8:14:57 | 6:28:07 |
| 05/23/09 | 42 | 7:44:21 | 6:27:32 |
| 05/24/08 | 38 | 7:55:29 | 6:31:29 |
| 05/26/07 | 31 | 8:57:18 | 6:39:56 |
| 05/27/06 | 29 | 9:38:21 | 7:16:09 |
| 05/28/05 | 23 | 8:06:02 | 6:26:20 |
| 05/25/02 | 14 | 8:55:09 | 8:02:05 |
50 KM
| Date | Finishers | Top Result (F) | Top Result (M) | Top Result (X) |
|---|---|---|---|---|
| 05/23/26 | 314 | 4:54:05 | 3:26:55 | |
| 05/24/25 | 316 | 4:14:06 | 3:23:02 | |
| 05/25/24 | 209 | 4:48:38 | 3:33:41 | 7:21:26 |
| 05/27/23 | 190 | 4:10:54 | 3:37:31 | |
| 05/28/22 | 152 | 4:16:00 | 3:37:46 | |
| 09/26/20 | Race Cancelled | |||
| 05/25/19 | 128 | 4:30:00 | 3:43:32 | |
| 05/26/18 | 160 | 4:26:41 | 3:46:19 | |
| 05/27/17 | 168 | 4:28:29 | 3:33:40 | |
| 05/28/16 | 138 | 4:26:18 | 3:54:52 | |
| 05/23/15 | 105 | 4:34:42 | 3:41:45 | |
| 05/24/14 | 99 | 4:40:16 | 4:10:16 | |
| 05/25/13 | 82 | 4:53:13 | 3:45:39 | |
| 05/26/12 | 80 | 3:59:45 | 4:06:53 | |
| 05/28/11 | 71 | 4:53:56 | 4:10:58 | |
| 05/29/10 | 83 | 4:50:29 | 3:59:46 | |
| 05/23/09 | 53 | 5:10:27 | 3:33:13 | |
| 05/24/08 | 54 | 4:03:37 | 4:10:01 | |
| 05/26/07 | 43 | 4:12:10 | 3:53:56 | |
| 05/28/05 | 57 | 4:42:58 | 3:46:26 | |
| 05/25/02 | 40 | 5:11:23 | 3:57:53 | |
| 05/27/00 | 57 | 4:36:26 | 3:41:48 | |
| 05/22/99 | 45 | 5:37:42 | 3:58:38 | |
| 05/23/98 | 52 | 5:05:51 | 3:53:24 | |
| 05/24/97 | 64 | 4:40:08 | 3:57:20 | |
| 05/25/96 | 49 | 4:29:36 | 3:52:50 | |
200 Miles
| Date | Finishers | Top Result (F) | Top Result (M) |
|---|---|---|---|
| 05/27/17 | 14 | 69:51:20 | 51:00:20 |