Endurance Event Ratings

The message below was posted to the Ultra list. Gary maintains the RealEndurance.com website. Based on my experience, it seems fairly accurate.

All,

Ever wondering about the relative difficulty among the 100 mile races?
Between an Ironman and 100 mile ultra? half Ironman vs. 50 milers?
Here is an analysis I have done using the data collected
in the RealEndurance.Com database.
The percentage is benchmarked against Western State 100.

This may be a useful tool for those have a particular time
goal in the 100 mile race, and want to use other event to gauage
their training progress.

A general trend can be observed below:

> From 50 km to 100 mile, factor is 4 to 6.
> From 50 mile to 100 mile, factor is 2.5 to 3.5

Gary

Relative Event Finish Time to Western States 100 Mile Endurance Run.

Sample Criteria:
Same person completed both the event in the list and WS100 in the same year.
The relative percentage is averaged over the samples.

Distance Samples Event

100m 18 161.3% Hardrock 100 Mile Endurance Run
135m 44 158.7% BadWater Ultra Marathon
100m 19 131.6% HURT Trail 100 Mile Endurance Run
100m 355 119.0% Wasatch Front 100 Mile Endurance Run
100m 12 112.4% Bear 100 Mile Endurance Run
100m 30 111.1% Massanutten Mountain Trails 100 Mile Run
100m 240 108.7% Angeles Crest 100 Mile Endurance Run
100m 4 107.5% Superior Sawtooth 100 Mile
100m 24 106.4% Cascade Crest 100 Mile Endurance Run
100m 365 104.2% Leadville Trail 100 Miles Endurance Run
100m 11 101.0% San Diego 100 Mile Endurance Run
100m 6189 100.0% Western States 100 Miles Endurance Run
100m 44 92.6% Rio Del Lago 100 Mile Endurance Run
100m 5 90.1% SULPHUR SPRINGS 100 Mile
100m 10 87.0% Mohican Trail 100 Mile
100m 55 87.0% Arkansas Traveller 100 Mile
100m 69 87.0% Old Dominion 100 Mile One Day Endurance Run
100m 11 86.2% Javelina Jundred 100 Mile Endurance Run
100m 233 84.7% Vermont Trail 100 Miles Endurance Run
100m 7 84.0% Heartland 100 Mile Endurance Run
100m 5 82.6% Kettle Moraine 100 mile
100k 13 82.6% HURT Trail 100k option
100m 4 80.0% Old Dominion 100 mile Memorial Day run
100m 31 80.0% Umstead 100 Mile Endurance Run
100m 82 79.4% Rocky Raccoon 100mi
140m 4 71.9% IronMan CoeurdAlene
140m 3 71.4% IronMan Canada
100k 19 60.2% Where’s Waldo 100K
200m 4 59.2% Mt Tam Double Century 200m bike ride
140m 9 57.5% IronMan Wisconsin
100k 10 51.5% Bandera 100km
140m 10 50.3% IronMan USA Lake Placid
50m 95 47.8% Zane Grey 50 Miles
100k 626 47.2% Miwok 100K
100k 11 46.1% Kettle Moraine 100 km
140m 3 44.6% IronMan Hawaii World Championship
140m 9 44.6% IronMan Florida
52m 192 39.7% Sierra Nevada Endurance Run
100k 95 39.5% Ruth Anderson 100k
50m 46 38.5% Crown King Scramble
50m 91 38.3% White River 50 Miles
50m 20 36.9% Tahoe Rim Trail 50m
50m 48 36.9% Run on the Sly 50m
50m 283 36.8% FireTrail 50 Miles
50m 212 36.5% Nugget 50 Miles Endurance Run
50m 299 36.5% Quicksilver 50 Mile
50m 12 36.1% McNaughton Park Trail Runs
50m 194 35.1% Silver State 50m
50m 324 34.6% California 50 Miles Endurance Run
50m 4 34.0% Mt Hood PCT 50m
50m 28 33.4% McKenzie River 50k
50m 1658 33.4% American River 50 Miles Endurance Run
50m 106 33.3% Cow Mountain 50 Miles
50m 23 32.7% Umstead 50 Miles Endurance Run
50m 150 32.7% Avalon 50 Miles
50k 199 32.4% Silver State 50k
50k 41 31.8% Baldy Peak 50k
50m 12 31.5% Rocky Raccon 50 Miles
35m 24 31.2% Santa Barbara 9 Trails 35 Mile Endurance Run
50m 290 30.5% Jed Smith 50m
50m 102 30.2% Helen Klein 50m
50m 15 29.0% Ruth Anderson 50m
36m 3 28.2% Haleakala Run to the Sun
50k 31 28.2% Tahoe Rim Trail 50k
38m 13 27.4% Haleakala Run to the Sun
50k 254 23.8% Ohlone Wilderness 50K Trail Run
71m 13 23.4% WildFlower Long Course Triathlon
71m 9 23.1% California Half Ironman
34m 20 22.6% Peterson Ridge Rumble 60k
50k 6 22.5% Bandera 50km
50k 57 22.3% Run on the Sly 50 Km
50k 152 22.1% Golden Gate Headlands 50k
28m 406 22.1% Quad Dipsea
50k 88 21.9% McDonald Forest 50K
50k 80 21.6% Crown King Scramble
50k 16 21.0% Bulldog 50K Ultra Run
50k 35 20.9% Chuckanut 50k
50k 12 20.7% Siskiyou Out Back 50K
50k 340 20.6% Skyline 50k
50k 197 20.2% Quicksilver 50K
50k 870 20.0% Way Too Cool 50k
50k 39 19.8% Hagg Lake Trail Runs
50k 21 19.4% McKenzie River 50k
50k 10 18.6% Ruth Anderson 50k
50k 88 17.7% OTHTC High Desert Ultra 50k
50k 8 17.2% Salem Lakeshore Frosty Fifty Km
50k 268 17.0% Jed Smith 50K
50k 23 16.9% Helen Klein 50k
45m 9 13.8% Santa Barbara Long Course Triathlon

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One comment

  1. All,Just want to follow up on my previous posting and answera few questions. Someone pointed out the fact that the racesnear the reference event (WS100) can be influenced by the effectof the training/recovery. To resolve this, I decided to run theanalysis over 9 popular 100 mile runs, and the resultis listed below. The percentage didn’t change much from previous analysisof using only WS100 as reference. The difference are all within thestatistical errors.One person asked the if the ratio varies between slow and fast runners.In general, there isn’t much difference between slower and faster runners.But the ratio is just slightly lower for the top 5% of 100 mile finishers.This probably can attribute to the effect of racing and pushing harder ina major event.A few asked where Barkley listed on the scale. There isn’t enough datapoints to statistically compute a percentage. My guess would be 200+% range.I should also note that although this analysis can be useful in predictingfinishing time, there are a lot of factors can cause one’s time to deviatefrom the “average”.Gary——————————————————Relative Event Finish Time to Western States 100 Mile .Sample Criteria:Same individual completed the listed event andone of the following 100 mile run in the SAME YEAR:Western States, Vermont, Leadville, Angeles Creset, Wasatch,Kettle Moraine, Hardrock, Rocky Raccoon, and Mohican.The relative percentage is first averaged over the samplesfor each 100 mile reference, then normalized to Western States,then averaged over the nine 100 mile runs listed.The relative uncertainy of the analysis isporportional to 1/sqrt(sample size). TimeDist. Rel to Sample Event Name WS100 Size135m 157% 133 BadWater Ultra Marathon100m 155% 904 Hard Rock 100 Mile100m 131% 58 HURT Trail 100 Mile100m 117% 3279 Wasatch Front 100 Mile100m 113% 45 Mount Rushmore Trail 100 Mile100m 113% 115 Bear 100 Mile100m 112% 90 Bighorn Mountain Trail Run100m 111% 396 Massanutten Mountain Trails 100 Mile100m 108% 14 Tahoe Rim Trail 100 miles100m 108% 2156 Angeles Crest 100 Mile100m 107% 12 Grand Teton Races 100m100m 106% 79 Superior Sawtooth 100 Mile100m 105% 80 Cascade Crest 100 Mile100m 103% 4508 Leadville Trail 100 Miles100m 100% 7497 Western States 100 Miles100m 99% 79 San Diego 100 Mile100m 96% 46 McNaughton Park Trail Runs100m 93% 72 Rio Del Lago 100 Mile100m 93% 41 Ancient Oaks 100100m 91% 66 Haliburton Forest 100100m 90% 984 Mohican Trail 100 Mile100m 89% 108 Javelina Jundred 100 Mile100m 88% 341 Old Dominion 100 Mile One Day100m 88% 34 SULPHUR SPRINGS 100 Mile100m 88% 451 Arkansas Traveller 100 Mile100m 88% 628 Kettle Moraine 100 mile100m 84% 3533 Vermont Trail 100 Miles100m 84% 91 Heartland 100 Mile100k 81% 68 HURT Trail 100k option100m 81% 281 Umstead 100 Mile100m 81% 1654 Rocky Raccoon 100m100m 80% 41 Old Dominion 100 mile Memorial Day100m 76% 22 Dan Rossi Memorial Ultras140m 66% 17 IronMan CoeurdAlene140m 61% 20 IronMan Canada200m 60% 8 Mt Tam Double Century100k 58% 45 Where’s Waldo 100K200m 57% 14 The Terrible Two100k 53% 97 Bandera 100km140m 53% 25 IronMan Wisconsin50m 48% 332 Zane Grey 50 Miles140m 47% 28 IronMan USA Lake Placid100k 46% 1052 Miwok 100K140m 46% 35 IronMan Florida100k 46% 42 Kettle Moraine 100k option140m 46% 14 IronMan Hawaii World Championship50m 40% 99 Bishop High Sierra 50 Miles50m 40% 70 Tahoe Rim Trail 50 Miles52m 39% 340 Sierra Nevada100k 39% 144 Ruth Anderson 100k100k 39% 7 Orange Curtain 100k50m 37% 229 White River 50 Miles50m 36% 340 Silver State 50 Miles50m 36% 528 Quicksilver 50 Mile50m 36% 425 FireTrail 50 Miles50m 36% 80 Run on the Sly 50 Miles50k 35% 338 Silver State 50k50m 35% 342 Nugget 50 Miles50m 35% 19 Mt Hood PCT 50 Miles50m 35% 369 Leona Divide 50 Mile Run50m 35% 147 Umstead 50 Miles50m 34% 536 California 50 Miles35m 34% 84 Santa Barbara 9 Trails 35 Mile50m 33% 2568 American River 50 Miles50m 33% 52 McKenzie River 50 Miles50m 32% 414 Avalon 50 Miles50m 32% 41 Rocky Raccon 50 Miles50k 31% 203 Baldy Peak 50k50m 31% 163 Helen Klein 50 Miles50m 30% 114 Cow Mountain 50 Miles50k 30% 64 Tahoe Rim Trail 50k50m 30% 372 Jed Smith 50 Miles50k 28% 16 Bishop High Sierra 50 Mile and 50 Km38m 28% 26 Haleakala Run to the Sun50m 28% 20 Ruth Anderson 50 Miles50k 28% 37 Mt. Disappointment 50 Km50k 25% 12 Nugget 50 Miles50k 24% 411 Ohlone Wilderness 50K Trail Run50k 23% 253 Crown King Scramble 50k50k 23% 195 McDonald Forest 50K71m 23% 31 WildFlower Long Course Triathlon50k 23% 7 Bighorn Mountain Trail Run50k 23% 76 Run on the Sly 50 Km34m 22% 36 Peterson Ridge Rumble 60k50k 22% 219 Golden Gate Headlands 50k50k 22% 58 Bandera 50k50k 22% 53 Bulldog 50K Ultra Run28m 22% 687 Quad Dipsea50k 21% 43 Siskiyou Out Back 50K50k 21% 81 Chuckanut 50k71m 21% 27 California Half Ironman50k 20% 297 Quicksilver 50K50k 20% 13 Ruth Anderson 50k50k 20% 512 Skyline 50k50k 20% 1392 Way Too Cool 50k50k 19% 73 Hagg Lake Trail Runs 50k50k 19% 5 Wild Wild West 50k50k 19% 36 McKenzie River 50k50k 18% 301 OTHTC High Desert Ultra 50k50k 17% 31 Helen Klein 50k50k 17% 38 Salem Lakeshore Frosty Fifty Km50k 17% 384 Jed Smith Ultra Classic 50K45m 12% 14 Santa Barbara Long Course TriathlonA general trend can be observed below:> From 50 km to 100 mile, factor is 4 to 6.> From 50 mile to 100 mile, factor is 2.5 to 3.5

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