Both Races will start at the Hacienda Entrance to Almaden Quicksilver Park. The address is 21785 Almaden Road, San Jose, CA 95120. The 50K and 100k races are run on scenic, hilly single track trails and fire roads. You will run through peaceful oak forests, wide-open meadows, and along ridges with spectacular views of the Santa Clara Valley and the Santa Cruz Mountains. 

Although the course is very challenging, the friendly aid stations and beautiful scenery make Quicksilver an excellent choice for a first trail ultra-marathon. The outstanding post-race barbecue is a fitting reward after you’ve met the challenge.

Upcoming Races

May 9 2020
50 KM
6,056 5,922 ft.
Mixture Course
8 Aid Stations
14 :00 Cutoff
4 Elevation Rating
Very hilly, ~7500-12,500 feet in 50 miles
3 Surface Rating
Some rocks, root, and/or ruts
May 9 2020
100 KM
12,425 12,425 ft.
Mixture Course
12 Aid Stations
17 :00 Cutoff
4 Elevation Rating
Very hilly, ~7500-12,500 feet in 50 miles
3 Surface Rating
Some rocks, root, and/or ruts

Results

100 KM View course top times

Date Finishers Top Result Top Result (F)
05/11/19 148 9:32:44 12:11:59
05/12/18 168 9:53:20 11:15:00
05/13/17 159 9:48:30 11:23:52
05/14/16 165 9:17:52 11:02:07
05/09/15 181 9:05:48 10:18:49
05/10/14 83 9:51:52 11:58:11

50 KM View course top times

Date Finishers Top Result Top Result (F)
05/11/19 110 3:32:10 4:48:28
05/12/18 178 4:01:48 5:03:55
05/13/17 147 4:02:15 4:11:42
05/14/16 134 4:08:58 4:16:08
05/09/15 154 4:04:12 4:43:45
05/10/14 123 4:01:36 4:36:35
05/11/13 132 4:30:39 4:44:36
05/12/12 127 3:55:08 4:40:47
04/30/11 103 3:54:20 4:56:26
05/08/10 82 3:30:10 4:45:48
05/09/09 75 4:31:33 5:05:49
05/10/08 96 3:51:58 5:03:46
05/12/07 84 4:04:14 4:37:14
05/13/06 67 4:05:09 4:17:15
05/07/05 69 4:05:55 5:10:50
05/08/04 80 4:40:03 4:37:25
05/10/03 70 4:06:39 4:59:08
05/11/02 86 3:44:30 4:28:38
05/12/01 76 4:22:04 4:53:44
05/13/00 101 3:56:01 4:50:39
05/08/99 97 4:01:54 4:44:20
05/09/98 111 3:40:44 4:28:42
05/10/97 116 3:42:49 4:29:49
05/11/96 89 3:44:03 4:49:46
05/13/95 85 3:49:25 5:14:54
05/07/94 65 4:29:13 5:52:31
05/08/93 110 3:58:30 4:20:41
05/09/92 75 4:00:16 5:02:55
05/11/91 72 4:08:08 5:20:17
05/12/90 40 3:38:40 4:49:02
05/13/89 92 3:38:36 5:09:02
05/09/88 1 6:20:00
05/09/87 46 3:54:30 4:59:38
05/11/85 30 4:24:53 9:40:27

50 Miles View course top times

Date Finishers Top Result Top Result (F)
05/11/13 78 6:16:54 8:50:16
05/12/12 75 7:03:34 9:06:59
04/30/11 74 6:01:45 8:13:07
05/08/10 78 6:50:37 8:15:59
05/09/09 81 6:15:41 7:43:52
05/10/08 80 6:35:28 7:45:53
05/12/07 76 6:39:18 8:51:05
05/13/06 44 6:41:22 8:29:57
05/07/05 81 6:57:42 7:20:59
05/08/04 54 6:55:47 8:10:33
05/10/03 39 7:25:51 8:30:50
05/11/02 37 7:33:16 6:45:56
05/12/01 41 7:33:57 8:19:30
05/13/00 38 8:01:19 8:26:53
05/08/99 49 7:12:15 9:01:47
05/09/98 52 6:58:36 7:29:48
05/10/97 46 7:11:56 7:48:46
05/11/96 42 6:24:31 7:59:23
05/13/95 59 6:39:28 8:19:59
05/07/94 50 7:20:17 8:26:12
05/08/93 72 7:24:29 8:03:15
05/09/92 59 7:20:51 6:43:52
05/11/91 50 7:06:45 8:48:07
05/12/90 57 6:32:34 8:44:47
05/13/89 73 6:18:44 8:50:11
05/09/88 2 6:50:00
05/09/87 63 7:06:03 8:14:58
05/11/85 21 6:48:33 8:48:01
05/12/84 10 6:51:45 9:06:45
We try to keep the most accurate information about this race, but changes do happen. Always visit the official race website for the most up to date information.
The Back 40 Trail Run
  • Dec 14, 2019
  • Bella Vista, AR
40 Miles