The Hawk Hundred (Lawrence) Ultramarathon or Flint Hills 50 and Marathon Ultramarathon — which comes out ahead?

Flint Hills 50 and Marathon Ultramarathon has the stronger available profile on flat grade share, course flatness and conditions.

Route comparison snapshot

The Hawk Hundred (Lawrence) Ultramarathon

Mapped route
Held
Elevation profile
Held
course flatness
1.2%
flat grade share
60.6%
lower ascent
1,527 m
climbing density
9.5 m/km
net elevation
8 m
maximum grade
15.2%

Flint Hills 50 and Marathon Ultramarathon

Mapped route
Held
Elevation profile
Held
course flatness
0.6% Favoured
flat grade share
68.1% Favoured
lower ascent
655 m
climbing density
8.1 m/km
net elevation
-1 m
maximum grade
9.6%
Head-to-head comparison
MetricThe Hawk Hundred (Lawrence) UltramarathonFlint Hills 50 and Marathon Ultramarathon
Flat grade share60.6%68.1%
GAP factor (% slower than flat)1.2%0.6%
Uphill share20.1%16.3%
Steep-up share2.8%1.0%
Downhill share19.3%15.6%
Total ascent (m)1,527 m655 m
Climbing density (m/km)9.5 m/km8.1 m/km
Longest climb length (m)1,110 m1,320 m
Longest climb gain (m)32 m26 m
Longest climb average grade2.9%2.0%
Total descent (m)1,518 m656 m
Net elevation (m)8 m-1 m
Max absolute grade15.2%9.6%
Start elevation (m)292 m313 m
Finish elevation (m)301 m312 m
Scenic score100/10031/100
Conditions46/10077/100

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
FactThe Hawk Hundred (Lawrence) UltramarathonFlint Hills 50 and Marathon Ultramarathon
Schedule

Exact race date not confirmed. Event weekend starts 2026-09-12 (legacy event-level date).

Exact race date not confirmed. Event weekend starts 2027-04-10 (legacy event-level date).

LocationLawrence, KansasManhattan, Kansas
Actual distance160.9 km80.5 km
raceindex.org mapped route heldHeldHeld
raceindex.org elevation profile heldHeldHeld
Course typeLapsLaps
SurfaceTechnical rolling singletrack trail through Clinton State Park, including a scenic shoreline red Blazed section, the Cactus Ridge section and a 2.5 Mile loop with two ascents of Bunker Hill.Dirt Road
Elevation characterRollingUnavailable
TerrainTrailRoad, Trail
SceneryParkland, Coastal, Forest, Lakeside, CountrysideCountryside, Waterfront
TechnicalityTechnicalUnavailable
Total ascent1,527 m655 m
Climbing density9.5 m/km8.1 m/km
Total descent1,518 m656 m
Net elevation8 m-1 m
Max absolute grade15.2%9.6%
Flat grade share60.6%68.1%
GAP factor1.2%0.6%
Cutoff32:00:0014:00:00
Entry modelOpenOpen

Schedule

The Hawk Hundred (Lawrence) Ultramarathon

Exact race date not confirmed. Event weekend starts 2026-09-12 (legacy event-level date).

Flint Hills 50 and Marathon Ultramarathon

Exact race date not confirmed. Event weekend starts 2027-04-10 (legacy event-level date).

Location

The Hawk Hundred (Lawrence) Ultramarathon
Lawrence, Kansas
Flint Hills 50 and Marathon Ultramarathon
Manhattan, Kansas

Actual distance

The Hawk Hundred (Lawrence) Ultramarathon
160.9 km
Flint Hills 50 and Marathon Ultramarathon
80.5 km

raceindex.org mapped route held

The Hawk Hundred (Lawrence) Ultramarathon
Held
Flint Hills 50 and Marathon Ultramarathon
Held

raceindex.org elevation profile held

The Hawk Hundred (Lawrence) Ultramarathon
Held
Flint Hills 50 and Marathon Ultramarathon
Held

Course type

The Hawk Hundred (Lawrence) Ultramarathon
Laps
Flint Hills 50 and Marathon Ultramarathon
Laps

Surface

The Hawk Hundred (Lawrence) Ultramarathon
Technical rolling singletrack trail through Clinton State Park, including a scenic shoreline red Blazed section, the Cactus Ridge section and a 2.5 Mile loop with two ascents of Bunker Hill.
Flint Hills 50 and Marathon Ultramarathon
Dirt Road

Elevation character

The Hawk Hundred (Lawrence) Ultramarathon
Rolling
Flint Hills 50 and Marathon Ultramarathon
Unavailable

Terrain

The Hawk Hundred (Lawrence) Ultramarathon
Trail
Flint Hills 50 and Marathon Ultramarathon
Road, Trail

Scenery

The Hawk Hundred (Lawrence) Ultramarathon
Parkland, Coastal, Forest, Lakeside, Countryside
Flint Hills 50 and Marathon Ultramarathon
Countryside, Waterfront

Technicality

The Hawk Hundred (Lawrence) Ultramarathon
Technical
Flint Hills 50 and Marathon Ultramarathon
Unavailable

Total ascent

The Hawk Hundred (Lawrence) Ultramarathon
1,527 m
Flint Hills 50 and Marathon Ultramarathon
655 m

Climbing density

The Hawk Hundred (Lawrence) Ultramarathon
9.5 m/km
Flint Hills 50 and Marathon Ultramarathon
8.1 m/km

Total descent

The Hawk Hundred (Lawrence) Ultramarathon
1,518 m
Flint Hills 50 and Marathon Ultramarathon
656 m

Net elevation

The Hawk Hundred (Lawrence) Ultramarathon
8 m
Flint Hills 50 and Marathon Ultramarathon
-1 m

Max absolute grade

The Hawk Hundred (Lawrence) Ultramarathon
15.2%
Flint Hills 50 and Marathon Ultramarathon
9.6%

Flat grade share

The Hawk Hundred (Lawrence) Ultramarathon
60.6%
Flint Hills 50 and Marathon Ultramarathon
68.1%

GAP factor

The Hawk Hundred (Lawrence) Ultramarathon
1.2%
Flint Hills 50 and Marathon Ultramarathon
0.6%

Cutoff

The Hawk Hundred (Lawrence) Ultramarathon
32:00:00
Flint Hills 50 and Marathon Ultramarathon
14:00:00

Entry model

The Hawk Hundred (Lawrence) Ultramarathon
Open
Flint Hills 50 and Marathon Ultramarathon
Open

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

Common questions

Which is flatter, The Hawk Hundred (Lawrence) Ultramarathon or Flint Hills 50 and Marathon Ultramarathon?

Flint Hills 50 and Marathon Ultramarathon has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.

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How figures are calculated →