This unbelievable 20K looped course is a hidden gem inside the Dundas Valley Conservation Area of Ancaster, Ontario.

With wildlife teeming through this old Carolinian Forest, and waterfalls cascading over rocks along the course, your legs may not even 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 three fully stocked Aid Stations along the way.

The Sulphur Springs Trail Race is the Longest Running Ultra Race in the province of Ontario, dating back to 1993. Our 2024 running of this race promises to be the best one yet, as we aim to gain WSER Qualifying status for this challenging course. Don’t miss it!

Additional Distances

This event also has the following non ultra distances

10 KM 20 KM

Results

Date Finishers Top Result (M) Top Result (F)
05/25/24 179 8:26:02 11:00:17
05/27/23 59 8:50:08 11:43:27
05/28/22 32 11:52:56 13:41:01
09/26/20 Race Cancelled
05/27/17 38 10:46:29 10:29:39
Date Finishers Top Result (M) Top Result (F)
05/25/24 78 16:58:22 17:18:57
05/27/23 45 18:47:31 23:21:37
05/28/22 33 17:25:28 19:52:08
09/26/20 Race Cancelled
05/25/19 15 18:26:10 21:34:40
05/26/18 41 18:49:21 20:52:41
05/27/17 35 20:43:07 24:45:00
05/28/16 27 15:33:34 23:18:32
05/23/15 38 17:50:36 18:27:39
05/24/14 27 18:07:31 17:49:54
05/25/13 57 15:37:24 18:57:59
05/26/12 42 15:40:22 19:53:52
05/28/11 39 17:49:16 20:55:45
05/29/10 35 17:12:37 19:59:38
05/29/10 36 17:12:37 19:59:38
05/23/09 39 18:40:04 21:47:28
05/24/08 32 18:43:43 19:20:35
05/26/07 30 17:14:53 18:57:06
05/27/06 31 18:35:56 19:56:14
05/28/05 24 18:08:25 20:51:25
05/29/04 17 19:10:00 19:40:00
05/24/03 8 19:58:54 21:42:11
05/25/02 13 19:26:25 28:23:53
05/26/01 16 18:47:53 23:36:49
Date Finishers Top Result (M) Top Result (F)
05/25/24 53 7:52:33 7:08:00
05/27/23 62 6:28:05 7:56:44
05/28/22 41 7:54:23 8:41:26
09/26/20 Race Cancelled
05/25/19 99 7:19:56 8:56:17
05/26/18 101 6:56:25 8:51:17
05/27/17 70 6:44:13 8:11:00
05/28/16 83 7:15:04 9:15:40
05/23/15 87 6:39:44 7:16:41
05/24/14 83 6:48:31 8:02:18
05/25/13 74 6:07:00 8:01:03
05/26/12 79 6:49:43 7:51:34
05/28/11 47 7:45:07 7:42:34
05/29/10 70 6:28:07 8:14:57
05/29/10 69 7:14:41 8:14:57
05/23/09 42 6:27:32 7:44:21
05/24/08 38 6:31:29 7:55:29
05/26/07 31 6:39:56 8:57:18
05/27/06 29 7:16:09 9:38:21
05/28/05 23 6:26:20 8:06:02
05/25/02 14 8:02:05 8:55:09
Date Finishers Top Result (M) Top Result (F)
05/25/24 209 3:33:41 4:48:38
05/27/23 190 3:37:31 4:10:54
05/28/22 152 3:37:46 4:16:00
09/26/20 Race Cancelled
05/25/19 128 3:43:32 4:30:00
05/26/18 160 3:46:19 4:26:41
05/27/17 168 3:33:40 4:28:29
05/28/16 138 3:54:52 4:26:18
05/23/15 105 3:41:45 4:34:42
05/24/14 99 4:10:16 4:40:16
05/25/13 82 3:45:39 4:53:13
05/26/12 80 4:06:53 3:59:45
05/28/11 71 4:10:58 4:53:56
05/29/10 83 3:59:46 4:50:29
05/23/09 53 3:33:13 5:10:27
05/24/08 54 4:10:01 4:03:37
05/26/07 43 3:53:56 4:12:10
05/28/05 57 3:46:26 4:42:58
05/25/02 40 3:57:53 5:11:23
05/27/00 57 3:41:48 4:36:26
05/22/99 45 3:58:38 5:37:42
05/23/98 52 3:53:24 5:05:51
05/24/97 64 3:57:20 4:40:08
05/25/96 49 3:52:50 4:29:36
Date Finishers Top Result (M) Top Result (F)
05/27/17 14 2d 03:00:20 2d 21:51:20