Leadville Trail 100 Run Ultramarathon or Hardrock Hundred Mile Endurance Run Ultramarathon — which comes out ahead?

Leadville Trail 100 Run Ultramarathon has the stronger available profile on flat grade share and conditions.

Route comparison snapshot

Leadville Trail 100 Run Ultramarathon

Mapped route
Held
Elevation profile
Held
course flatness
8.9%
flat grade share
38.1% Favoured
lower ascent
4,444 m
climbing density
27.7 m/km
net elevation
-0 m
maximum grade
42.6%

Hardrock Hundred Mile Endurance Run Ultramarathon

Mapped route
Held
Elevation profile
Held
course flatness
Unavailable
flat grade share
14.2%
lower ascent
9,546 m
climbing density
59.3 m/km
net elevation
-1 m
maximum grade
Unavailable
Head-to-head comparison
MetricLeadville Trail 100 Run UltramarathonHardrock Hundred Mile Endurance Run Ultramarathon
Flat grade share38.1%14.2%
GAP factor (% slower than flat)8.9%Unavailable
Uphill share31.1%38.4%
Steep-up share16.5%31.6%
Downhill share30.8%47.4%
Total ascent (m)4,444 m9,546 m
Climbing density (m/km)27.7 m/km59.3 m/km
Longest climb length (m)5,660 m4,860 m
Longest climb gain (m)898 m1,031 m
Longest climb average grade15.9%21.2%
Total descent (m)4,445 m9,547 m
Net elevation (m)-0 m-1 m
Max absolute grade42.6%Unavailable
Start elevation (m)3,088 m2,838 m
Finish elevation (m)3,088 m2,838 m
Scenic score89/100100/100
Conditions95/10020/100

Only metrics available for at least one side are shown. A ✓ marks the better value for each metric (higher-is-better aware). Scores are out of 100 when available. Ascent, climbing density, max absolute grade and median finish describe course or field context and are not marked as better or worse.

Race facts that change the decision

Race facts comparison
FactLeadville Trail 100 Run UltramarathonHardrock Hundred Mile Endurance Run Ultramarathon
Schedule

Exact race date not confirmed. Event weekend starts 2026-08-22 (legacy event-level date).

Exact race date not confirmed. Event weekend starts 2026-07-10 (legacy event-level date).

LocationLeadville, ColoradoSilverton, Colorado
Actual distance160.5 km161 km
raceindex.org mapped route heldHeldHeld
raceindex.org elevation profile heldHeldHeld
Course typeOut And BackLoop
SurfaceMostly forest trail with some mountain roadsMostly mountain trail with some road and cross Country alpine sections above timberline.
Elevation characterMountainousMountainous
TerrainUnavailableTrail, Mixed
SceneryMountain, Countryside, Forest, LakesideMountain, Forest, Lakeside, City, Countryside, Riverside, Historic
AtmosphereUnavailableWilderness, Destination, Nighttime
TechnicalityTechnicalVery Technical
Total ascent4,444 m9,546 m
Climbing density27.7 m/km59.3 m/km
Total descent4,445 m9,547 m
Net elevation-0 m-1 m
Max absolute grade42.6%Unavailable
Flat grade share38.1%14.2%
GAP factor8.9%Unavailable
Cutoff30:00:0048:00:00
Field capUnavailable147
Entry modelBallotBallot

Schedule

Leadville Trail 100 Run Ultramarathon

Exact race date not confirmed. Event weekend starts 2026-08-22 (legacy event-level date).

Hardrock Hundred Mile Endurance Run Ultramarathon

Exact race date not confirmed. Event weekend starts 2026-07-10 (legacy event-level date).

Location

Leadville Trail 100 Run Ultramarathon
Leadville, Colorado
Hardrock Hundred Mile Endurance Run Ultramarathon
Silverton, Colorado

Actual distance

Leadville Trail 100 Run Ultramarathon
160.5 km
Hardrock Hundred Mile Endurance Run Ultramarathon
161 km

raceindex.org mapped route held

Leadville Trail 100 Run Ultramarathon
Held
Hardrock Hundred Mile Endurance Run Ultramarathon
Held

raceindex.org elevation profile held

Leadville Trail 100 Run Ultramarathon
Held
Hardrock Hundred Mile Endurance Run Ultramarathon
Held

Course type

Leadville Trail 100 Run Ultramarathon
Out And Back
Hardrock Hundred Mile Endurance Run Ultramarathon
Loop

Surface

Leadville Trail 100 Run Ultramarathon
Mostly forest trail with some mountain roads
Hardrock Hundred Mile Endurance Run Ultramarathon
Mostly mountain trail with some road and cross Country alpine sections above timberline.

Elevation character

Leadville Trail 100 Run Ultramarathon
Mountainous
Hardrock Hundred Mile Endurance Run Ultramarathon
Mountainous

Terrain

Leadville Trail 100 Run Ultramarathon
Unavailable
Hardrock Hundred Mile Endurance Run Ultramarathon
Trail, Mixed

Scenery

Leadville Trail 100 Run Ultramarathon
Mountain, Countryside, Forest, Lakeside
Hardrock Hundred Mile Endurance Run Ultramarathon
Mountain, Forest, Lakeside, City, Countryside, Riverside, Historic

Atmosphere

Leadville Trail 100 Run Ultramarathon
Unavailable
Hardrock Hundred Mile Endurance Run Ultramarathon
Wilderness, Destination, Nighttime

Technicality

Leadville Trail 100 Run Ultramarathon
Technical
Hardrock Hundred Mile Endurance Run Ultramarathon
Very Technical

Total ascent

Leadville Trail 100 Run Ultramarathon
4,444 m
Hardrock Hundred Mile Endurance Run Ultramarathon
9,546 m

Climbing density

Leadville Trail 100 Run Ultramarathon
27.7 m/km
Hardrock Hundred Mile Endurance Run Ultramarathon
59.3 m/km

Total descent

Leadville Trail 100 Run Ultramarathon
4,445 m
Hardrock Hundred Mile Endurance Run Ultramarathon
9,547 m

Net elevation

Leadville Trail 100 Run Ultramarathon
-0 m
Hardrock Hundred Mile Endurance Run Ultramarathon
-1 m

Max absolute grade

Leadville Trail 100 Run Ultramarathon
42.6%
Hardrock Hundred Mile Endurance Run Ultramarathon
Unavailable

Flat grade share

Leadville Trail 100 Run Ultramarathon
38.1%
Hardrock Hundred Mile Endurance Run Ultramarathon
14.2%

GAP factor

Leadville Trail 100 Run Ultramarathon
8.9%
Hardrock Hundred Mile Endurance Run Ultramarathon
Unavailable

Cutoff

Leadville Trail 100 Run Ultramarathon
30:00:00
Hardrock Hundred Mile Endurance Run Ultramarathon
48:00:00

Field cap

Leadville Trail 100 Run Ultramarathon
Unavailable
Hardrock Hundred Mile Endurance Run Ultramarathon
147

Entry model

Leadville Trail 100 Run Ultramarathon
Ballot
Hardrock Hundred Mile Endurance Run Ultramarathon
Ballot

Facts are shown only when they exist in the sourced race record; Not held means no sourced value is held for that race.

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