Quicksilver 100K & 50K
Quicksilver 100K & 50K race day weather
Cool start, warming trend
Runners will face a temperature rise from 53°F at the start to 72°F by the finish, with humidity averaging 69%. Winds will be from the WSW at 18 mph, with gusts up to 25 mph, creating a potential headwind effect. Runners should plan to start conservatively and hydrate frequently as temperatures increase.
Pace Calculator
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Quicksilver 100K & 50K route and elevation
The Quicksilver 100K & 50K course has about 12,711 ft (3,874 m) of climbing and 12,710 ft (3,874 m) of descent, and finishes near the elevation it starts. The hardest mile is mile 28, with 652 ft (199 m) of climbing and a 12.3% average grade.
Biggest climbs
- Miles 17.8 to 20: climbs about 1,080 ft (329 m).
- Miles 26.6 to 29.4: climbs about 1,625 ft (495 m).
- Miles 55.3 to 59.4: climbs about 1,180 ft (359 m).
What the hills cost
- 9:35 on a flat course is about 10:57 here (82 minutes slower).
- 9:50 on a flat course is about 11:14 here (84 minutes slower).
- 10:05 on a flat course is about 11:31 here (86 minutes slower).
Hills only, priced mile by mile on the course map. The pace calculator above adds the race-day weather.
Even-effort splits for a 9:35, 9:50 or 10:05 finish
| Mile | Climb | Descent | 9:35 | 9:50 | 10:05 |
|---|---|---|---|---|---|
| 1 | 552 ft | 0 ft | 13:41 | 14:02 | 14:24 |
| 2 | 367 ft | 54 ft | 11:02 | 11:19 | 11:36 |
| 3 | 300 ft | 5 ft | 10:50 | 11:08 | 11:25 |
| 4 | 34 ft | 286 ft | 7:20 | 7:31 | 7:42 |
| 5 | 208 ft | 111 ft | 8:55 | 9:10 | 9:24 |
| 6 | 156 ft | 190 ft | 7:58 | 8:09 | 8:22 |
| 7 | 85 ft | 72 ft | 8:12 | 8:25 | 8:38 |
| 8 | 163 ft | 164 ft | 8:05 | 8:18 | 8:30 |
| 9 | 296 ft | 1 ft | 10:51 | 11:08 | 11:25 |
| 10 | 90 ft | 38 ft | 8:31 | 8:45 | 8:58 |
| 11 | 648 ft | 0 ft | 14:51 | 15:14 | 15:37 |
| 12 | 460 ft | 51 ft | 12:04 | 12:22 | 12:42 |
| 13 | 142 ft | 286 ft | 7:35 | 7:47 | 7:58 |
| 14 | 0 ft | 751 ft | 7:29 | 7:41 | 7:53 |
| 15 | 14 ft | 487 ft | 7:07 | 7:19 | 7:30 |
| 16 | 184 ft | 174 ft | 8:10 | 8:22 | 8:35 |
| 17 | 0 ft | 704 ft | 7:23 | 7:34 | 7:46 |
| 18 | 126 ft | 205 ft | 7:47 | 8:00 | 8:11 |
| 19 | 387 ft | 12 ft | 11:41 | 11:59 | 12:18 |
| 20 | 651 ft | 0 ft | 14:53 | 15:16 | 15:40 |
| 21 | 319 ft | 118 ft | 9:54 | 10:09 | 10:24 |
| 22 | 671 ft | 30 ft | 14:45 | 15:09 | 15:32 |
| 23 | 35 ft | 587 ft | 7:10 | 7:21 | 7:32 |
| 24 | 1 ft | 474 ft | 7:07 | 7:18 | 7:30 |
| 25 | 0 ft | 637 ft | 7:15 | 7:27 | 7:38 |
| 26 | 70 ft | 209 ft | 7:36 | 7:48 | 7:59 |
| 27 | 353 ft | 58 ft | 10:51 | 11:07 | 11:25 |
| 28 | 652 ft | 0 ft | 14:54 | 15:17 | 15:40 |
| 29 | 460 ft | 1 ft | 12:36 | 12:57 | 13:17 |
| 30 | 454 ft | 92 ft | 11:33 | 11:51 | 12:09 |
| 31 | 363 ft | 63 ft | 10:54 | 11:11 | 11:27 |
| 32 | 212 ft | 225 ft | 8:02 | 8:14 | 8:28 |
| 33 | 50 ft | 476 ft | 7:08 | 7:19 | 7:30 |
| 34 | 0 ft | 620 ft | 7:14 | 7:25 | 7:36 |
| 35 | 38 ft | 82 ft | 7:55 | 8:08 | 8:20 |
| 36 | 1 ft | 312 ft | 7:13 | 7:25 | 7:36 |
| 37 | 166 ft | 146 ft | 8:16 | 8:28 | 8:41 |
| 38 | 90 ft | 85 ft | 8:08 | 8:21 | 8:34 |
| 39 | 180 ft | 156 ft | 8:17 | 8:30 | 8:44 |
| 40 | 28 ft | 234 ft | 7:26 | 7:38 | 7:48 |
| 41 | 1 ft | 651 ft | 7:16 | 7:28 | 7:40 |
| 42 | 196 ft | 269 ft | 7:49 | 8:00 | 8:13 |
| 43 | 414 ft | 14 ft | 11:58 | 12:17 | 12:35 |
| 44 | 107 ft | 581 ft | 7:07 | 7:18 | 7:29 |
| 45 | 160 ft | 129 ft | 8:21 | 8:34 | 8:47 |
| 46 | 450 ft | 0 ft | 12:31 | 12:51 | 13:11 |
| 47 | 361 ft | 31 ft | 11:12 | 11:30 | 11:47 |
| 48 | 220 ft | 97 ft | 9:10 | 9:24 | 9:39 |
| 49 | 164 ft | 135 ft | 8:20 | 8:32 | 8:45 |
| 50 | 0 ft | 393 ft | 7:08 | 7:20 | 7:31 |
| 51 | 21 ft | 386 ft | 7:11 | 7:22 | 7:33 |
| 52 | 140 ft | 219 ft | 7:47 | 8:00 | 8:12 |
| 53 | 66 ft | 64 ft | 8:06 | 8:18 | 8:31 |
| 54 | 28 ft | 326 ft | 7:15 | 7:27 | 7:38 |
| 55 | 335 ft | 47 ft | 10:47 | 11:03 | 11:20 |
| 56 | 157 ft | 157 ft | 8:05 | 8:18 | 8:31 |
| 57 | 337 ft | 9 ft | 11:11 | 11:28 | 11:46 |
| 58 | 371 ft | 10 ft | 11:32 | 11:51 | 12:08 |
| 59 | 275 ft | 3 ft | 10:37 | 10:53 | 11:10 |
| 60 | 66 ft | 161 ft | 7:44 | 7:56 | 8:08 |
| 61 | 0 ft | 480 ft | 7:07 | 7:19 | 7:30 |
| 62 | 0 ft | 460 ft | 7:08 | 7:18 | 7:30 |
| Last 0.1 | 0 ft | 63 ft | 0:59 | 1:01 | 1:02 |
Explore the Quicksilver 100K & 50K course with the weather and your pace along the route, or compare it with other races.
About the Quicksilver 100K & 50K
The Quicksilver 100K and 50K races in San Jose, California, offer runners a challenging journey through the historic Almaden Quicksilver County Park. Participants traverse hilly single-track trails and fire roads, passing by landmarks such as the San Cristobal Mine and the Hidalgo Cemetery, while enjoying panoramic views of the Santa Clara Valley and the Santa Cruz Mountains. The 100K course features over 13,000 feet of elevation gain, making it a Western States 100 Mile Endurance Run qualifier, while the 50K course includes more than 6,000 feet of elevation gain. Both events start and finish at the Hacienda Entrance to Almaden Quicksilver Park, concluding with a post-race barbecue under the park's iconic oak trees.
