As of the finish of the 2016 Silverheels 100, there were 145 One-Hundred Mile Ultramarathons in North America.  In order to paint a more accurate picture in regards to the difficulty of this race, we wanted to offer some comparison with other select 100s. The 100s we’ve chosen to compare Silverheels to are all current Hardrock 100 Qualifiers. It should also be noted that only Hardrock has a higher average elevation for 100+ mile runs in North America.

We’ve acquired our data from realendurance.com, which has also compiled the list of all 100s as compared to the Western States 100. WS100 is the baseline for which races are compared against and is rated as 100%.  From RealEndurance.com “This list is compiled by averaging the finish times from the same individual for events completed in the same year. Second order regression analysis with a large reference sample size is used to remove bias from any one race. The results are normalized to the finish times of the Western States 100.”

We’ve highlighted CO 100s in Blue, Western States in Red, and Silverheels is in Bold for your viewing convenience

Race Name Location Difficulty to WS100 Elevation Gain Avg Finish Time Course Record Years Held
Hardrock 100 Silverton, CO 161% 34,100 39:57:15 22:41:33 23
Cruel Jewel Blue Ridge, GA 133% 23,300 35:31:50 24:16:29 4
HURT 100 Waianae, HI 130% 28,700 31:52:53 19:35:00 16
Mogollon Monster 100 Pine, AZ 125% 14,300 32:06:48 21:34:00 3
IMTUF Cascade, ID 120% 19,100 31:27:52 21:06:36 4
Wasatch Front 100 Kaysville, UT 120% 23,600 30:48:01 18:30:55 35
Silverheels 100 Fairplay, CO 119% 18,200 31:24:49 21:12:00 2
Run Rabbit Run Steamboat Springs, CO 116% 18,700 29:11:44 17:15:20 4
Bear 100 Logan, UT 114% 20,600 29:55:33 17:50:15 17
Bighorn 100 Dayton, WY 113% 18,700 29:24:55 18:36:42 15
Grindstone 100 Swoope, VA 109% 20,500 29:57:30 17:13:04 7
Angeles Crest 100 Wrightwood, CA 109% 21,900 28:18:17 17:35:48 29
Cascade Crest 100 Easton, WA 105% 21,300 27:24:30 17:56:50 17
Leadville Trail 100 Leadville, CO 104% 15,500 27:02:50 15:42:59 33
Western States 100 Squaw Valley, CA 100% 18,100 25:34:18 14:46:44 41