Ultras - An ultramarathon is any running event longer than a marathon (i.e. 26.2 miles). An ultrarun is any unusually difficult running event, regardless of distance (e.g. Pikes Peak Marathon). These ultra statistics are updated infrequently, but if you send updates to StanJ@Run100s.com, you should see them appear soon.

100 mile events in North America (in chronological order)
Cut.Climb/CourseWinning Year of
DateRace Name(hrs)DescentRecordTimeStartersFinishersPercentResults
1/19-20/13 HURT(HI) 36 24935'/24935' 20:12:__ 22:44:12 109 46 42% '12
1/21-22/12 Beast of Burden - Winter(NY) 30 ?'/?' 14:56:33 14:56:33   29  % '12
1/21-22/12 Long Haul(FL) 28 ?'/?' 13:18:58 13:18:588 42 28 67% '12
2/4-5/12 Rocky Raccoon(TX) 30 ?'/?' 12:44:33 12:44:34 316 190 60% '11
2/4-6/12 Yukon Arctic(CAN) 72 ?'/?' 28:23:__ 28:30:__ 19 16 84% '11
2/18-19/12 Rocky Road(CA) 34 12000'/12000' 16:42:49 16:42:49 61 35 57% '11
2/18-19/12 Iron Horse(FL) 24 ?'/?' 16:06:35 16:06:35   21  % '11
2/18-19/12 Susitna(AK) 48 ?'/?' 21:43:__ 26:47:__ __ 22 __% '11
3/3-4/12 Double Top(GA) 34 17500'/17500' __:__:__ __:__:__ __ __ __% '12
3/10-11/12 Graveyard(NC) 30 139'/138' __:__:__ __:__:__ __ __ __% '12
3/23-24/12 Buffalo Run(UT) 30.5 ?'/?' 15:31:__ 15:31:__ __ 31 __% '11
3/24-25/12 New Jersey(NJ) 30 ?'/?' 15:21:__ 16:49:32 49 40 82% '11
3/24-25/12 Moab(UT) 30 11000'/11000' 17:44:__ 17:44:__ 17 10 59% '11
3/25-26/12 White Mountains(AK) 48 ?'/?' 31:18:00 31:18:00 7 5 70% '11
3/30-31/12 Badger Mt. Challenge(WA) 32 ?'/?' 20:49:__ 20:49:__ __ 17 __% '11
3/31-4/1/12 Umstead(NC) 30 8000'/8000' 13:23:02 14:07:21 251 143 57% '11
3/31-4/1/12 Coyote Springs(NV) 33 4200'/4200' __:__:__ __:__:__ __ __ __% '11
4/7-8/12 Philadelphia(PA) 36 ?'/?' 14:58:23 18:45:23 13 % '11
4/13-14/12 Zumbro(MN) 34 ?'/?' 21:53:05 21:53:05 __ 16  % '11
4/13-15/12 Potawatomi(IL) 36 ?'/?' 17:40:13 20:16:19 51 20 39% '11
4/13-15/12 Santa Barbara(CA) 48 27473'/27473' 16:32:__ 16:32:__ 22 16 73% '11
4/21-22/12 Lumberjack(WA) 34 ?'/?' 19:49:__ 20:15:__ 34 12 35% '11
4/21-22/12 Labor of Love(NV) 32 ?'/?' 20:17:55 20:17:55 33 18 55% '11
4/23-24/11 Jerseyville(CAN) 26 ?'/?' 17:33:__ 17:33:__   5  % '11
4/27-28/12 Salt Flats(UT) 36 ?'/?' 15:57:24 15:57;24 __ 6 73% '11
4/28-29/12 CAT(MD) 36 ?'/?' 24:47:__ 29:24:__ 16 8 50% '11
5/11-12/12 Zion(UT) 36 7850'/7850' __:__:__ __:__:__      % '12
5/12-13/12 Massanutten Mt.(VA) 36 16200'/16200' 17:40:45 18:18:28 195 132 68% '11
5/12-13/12 McNaughton(VT) 36 ?'/?' 23:58:__ 29:57:18 __ 16 __% '11
5/19-20/12 Born To Run(CA) 30 11500'/11500' __:__:__ __:__:__      % '11
5/19-20/12 KEYS100(FL) 30 ?'/?' 16:31:10 17:51:17 81 45 56% '11
5/26-27/12 Pigtails Challenge(WA) 32 ?'/?' __:__:__ __:__:__ __ __ __% '12
5/26-27/12 Sulphur Springs(CAN) 30 ?'/?' 17:49:16 17:49:16 66 39 59% '11
5/26-27/12 Nanny Goats(CA) 28 ?'/?' 18:27:41 18:27:41 __ 20 __% '11
6/2-3/12 Old Dominion(VA) 28 14000'/14000' 15:10:13 16:16:47 68 49 72% '11
6/2-3/12 Kettle Moraine(WI) 30 12005'/12005' 15:17:32 19:30:55 __ 46 __% '11
6/9-10/12 San Diego(CA) 32 15687'/15729' 17:45:50 18:00:15 158 108 68% '11
6/15-16/12 Bighorn(WY) 34 ?'/?' 18:43:37 19:13:09   110  % '11
6/16-17/12 Mohican Trail(OH) 30 11230'/11230' 15:11:35 19:07:06 134 58 43% '10
6/23-24/12 Western States(CA) 30 18090'/22970' 15:07:04 15:34 375 310 83% '11
6/23-24/12 Black Hills(SD) 32 ?'/?' 23:01:42 23:01:42 91 32 35% '11
7/7-8/12 Viaduct Trail(PA) 30 ?'/?' 16:44:25 22:51:46 18 6 33% '11
7/7-8/12 Laramie(WY) 30 13000'/13000' 22:27:00 23:21:00 7 4 57% '11
7/13-15/12 Hardrock(CO) 48 33992'/33992' 23:23:30 25:17:__ 140 79 56% '11
7/21-22/12 Vermont(VT) 30 14160'/14160' 14:53:09 15:26:20 297 197 66% '11
7/21-22/12 Angeles Crest(CA) 33 21610'/26700' 17:35:48 20:21:33 123 71 58% '11
7/21-22/12 Tahoe Rim Trail(NV) 35 19788'/19788' 17:47:09 18:48:19 ___ 65 __% '11
7/28-29/12 Grand Mesa(CO) 33 ?'/?' 23:26:00 25:06:00   7  % '11
7/28-29/12 Burning River(OH) 30 ?'/?' 15:29:24 15:57:43 ___ 151 __% '11
8/4-5/12 Headlands Hundred(CA) 33 20068'/20068' 18:44:58 20:06:35 51 37 73% '11
8/18-19/12 Leadville Trail(CO) 30 15600'/15600' 15:42:59 16:46:54 625 347 56% '11
8/18-19/12 Beast of Burden - Summer(NY) 24 ?'/?' 16:19:05 17:51:37   28  % '11
8/18-19/12 Run-de-Vous(CA) 30 ?'/?' 18:54:43 18:54:43 12 10 83% '11
8/25-26/12 Cascade Crest(WA) 32 20470'/20470' 18:27:52 18:27:52 140 107 76% '11
8/25-26/12 Lean Horse(SD) 30 3524'/3524' 15:24:__ 15:34:12 ___ 77 __% '11
9/8-9/12 Pine Creek Challenge(PA) 30 ?'/?' __:__:__ __:__:__ ___ ___ __% '12
9/7-8/12 Wasatch Front(UT) 36 26882'/26131' 18:30:55 19:31:59 253 183 72% '11
9/7-8/12 Superior Sawtooth(MN) 38 20000'/21000' 21:42:11 22:35:28 __ 37 __% '10
9/7-8/12 Hallucination(MI) 30 ?'/?' 17:17:52 17:17:52   37  % '10
9/8-9/12 Plain(WA) 36 25365'/26766' 22:21:40 25:44:00 25 11 44% '11
9/7-8/12 Lost Soul(CAN) 37 ?'/?' 19:23:00 23:33;16 48 23 38% '11
9/10-11/11 Haliburton For.(CAN) 30 ?'/?' 15:40:35 17:18:02 40 23 58% '09
9/14-15/12 Run Rabbit Run(CO) 32 22000'/22000' __:__:__ __:__:__ __ __ __% '12
9/15-16/12 Pine to Palm(OR) 34 20000'/20000' 17:19:00 17:19:00 45 % '11
9/15-16/12 Mark Twain(MO) 32 10000'/10000' __:__:__ __:__:__ __ __ __% '12
9/22-23/12 Virgil Crest(NY) 36 20000'/20000' 23:04:__ 23:22:__ 55 28 51% '11
9/28-29/12 The Bear(UT) 36 21986'/21986' 18:34:09 20:55:00 238 175 74% '11
9/28-29/12 Mogollon Monster(AZ) 36 18000'/18000' __:__:__ __:__:__      % '12
9/29-30/12 The Georgia Jewel(GA) 36 15800'/15800' 21:01:05 21:01:05   32  % '11
10/5-7/12 Grindstone(VA) 38 23200'/23200' 18:46:26 19:41:22 118 85 72% '11
10/6-7/12 Arkansas Trav.(AR) 30 12086'/12106' 15:37:26 17:24:30 107 74 69% '11
10/6-7/12 Yellowstone-Teton(WY) 36 2323'/2323' 21:06:27 21:06:27 __ 11 __% '11
10/6-7/12 Rio del Lago(CA) 30 ?'/?' 15:31:14 18:40:48 ___ 38 __% '11
10/6-7/12 IMTUF(ID) 36 21000'/21000' __:__:__ __:__:__ __ __ __% '12
10/8-9/11 Slickrock(UT) 30 7800'/7800' __:__:__ __:__:__ __ __ __% '11
10/13-14/12 Heartland(KS) 30 6000'/6000' 14:26:43 17:53:36 __ 69 __% '11
10/13-14/12 Iron Horse Ultra(CAN) 27 ?'/?' 19:07:03 22:59:07 8 7 84% '11
10/13-14/12 Oil Creek(PA) 32 17785'/17785' 18:10:26 18:10:26   57  % '11
10/13-14/12 Boulder(CO) 30 1400'/1400' 18:41:__ 21:30:__ 35 15 43% '11
10/19-20/12 Pony Express Trail(UT) 30 3000'/3000' 15:06:27 15:06:27 20 17 85% '11
10/20-21/12 Pumpkin Holler(OK) 30 ?'/?' 19:20:52 19:20:52 57 31 54% '11
10/22-23/11 Endurance Challenge(CA) 30 ?'/?' 27:56:__ 27:56:__ 36 25 69% '11
10/27-28/12 Javelina Jundred(AZ) 30 5000'/5000' 13:47:43 13:47:43 ___ 174 __% '11
10/27-28/1/12 Cactus Rose(TX) 36 7318'/7318' 19:28:32 19:28:32 74 42 57% '11
11/3-4/12 Ozark(MO) 32 13500'/13500' 18:38:59 19:51:18 83 43 52% '11
11/3-4/12 Pinhoti(AL) 30 ?'/?' 16:42:20 16:42:20 118 66 56% '11
11/17-18/12 Chimera(CA) 40 21391'/21396' __:__:__ __:__:__ __ __ __% '11
12/3-4/11 Cajun Coyote(LA) 30 ?'/?' __:__:__ __:__:__ __ __ __% '11
12/10-11/11 Bartram(GA) 32 ?'/?' 19:24:22 19:24:22 41 18 44% '11
12/3-4/11 Ancient Oaks(FL) 32 ?'/?' 16:41:34 17:15:16 59 23 39% '11

I've tried to show the most recent results of each race.

"http://www.Run100s.com/ultra.htm" (updated: 2/2/12) StanJ@Run100s.com