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About RaceIndexOur methodologyData coverageCyclingTriathlon
  • Ultramarathon
  • 80.5 km
  • Manhattan
  • Event weekend starts
  • Open entry

Flint Hills 50 and Marathon Ultramarathon

This race edition

Race date
Date not confirmed for this distance
Race timezone
Timezone not confirmed
Edition status
Status not confirmed

Entry options

2027 edition

Entry options are not yet confirmed for this edition. Check the organiser before making plans.

Modelled energy-cost change 0.6% versus flat · net elevation -1 m

View verified GPS mapOfficial event website & entry ↗
Data current as of Source last verified

Decision summary

Flint Hills 50 and Marathon Ultramarathon at a glance

Route ascent
655 m

Lower than 92% of comparable mapped races

Cut-off average pace
10:26/km

14:00:00 total limit divided by distance. Check gun/chip timing and intermediate limits; allow time for stops.

Typical conditions
77/100

Historical race-date favourability, not a forecast

Evidence depth
28 verified facts

Stored GPS route

Quick answers

What runners ask first

Flint Hills 50 and Marathon Ultramarathon route map

raceindex.org has a GPS course file for Flint Hills 50 and Marathon Ultramarathon, so runners can inspect the route line on the map. Elevation charts and ascent figures appear only when that file includes usable elevation data.

How hilly is the Flint Hills 50 and Marathon Ultramarathon?

The Flint Hills 50 and Marathon Ultramarathon route has 655 m of ascent, 656 m of descent and an estimated 0.6% grade-adjusted pace penalty versus a flat route.

Where does the Flint Hills 50 and Marathon Ultramarathon route go?

The Flint Hills 50 and Marathon Ultramarathon route starts at 3770 Green Valley Rd, Manhattan, KS (Green Valley Community Center start/finish) and finishes at Green Valley Community Center, Manhattan, KS. Underfoot, expect dirt-road. It passes Flint Hills and Green Valley Community Center. Overall winners receive painted rocks from the course.

What should runners know on race day for the Flint Hills 50 and Marathon Ultramarathon?

5.

Race character

Scenery

  • Countryside
  • Waterfront

Terrain

  • Road
  • Trail

Entry, logistics and records

Records and field

Men's course record
6:33:18 (Cory Logsdon)
Women's course record
6:56:40 (Terri Payne)

Entry requirements

Entry status
Open entry: The held registration model is open entry and this edition is not marked sold out.
Cut-off
14 hours
Qualification status
Open Entry trail ultramarathon; no qualifying time or lottery required.

Race day logistics

Aid stations
5
Expo / packet pickup
Packet pickup Friday 4:00-7:00 pm at Manhattan Running Company (1129 Garden Way, Manhattan, KS); race-day pickup 6:00-7:30 am at the start/finish.
Medal
Every finisher receives a finisher's belt buckle with the race logo.

Access and course status

Start
3770 Green Valley Rd, Manhattan, KS (Green Valley Community Center start/finish)
Finish
Green Valley Community Center, Manhattan, KS

Course facts

Course type
Laps
Surface
Dirt Road
Landmarks
Flint Hills, Green Valley Community Center
Notable features
  • Overall winners receive painted rocks from the course
  • runners who complete the race five times earn an additional painted rock inscribed with all completion years
  • Two 25-mile loops around the course with 5 aid stations on each loop. Start time 7:00 am

How hilly is the Flint Hills 50 and Marathon Ultramarathon?

15%68%15%
  • Steep descent 1%
  • Descent 15%
  • Flat 68%
  • Climb 15%
  • Steep climb 1%
Total ascent
655 m
Net elevation
−1 m
GAP factor
0.6%
Longest climb
1,320 m at 2.0%
Gradient mix and ascent are derived from the course geometry under our published normalisation, not taken from organiser marketing.

What are typical race-day conditions?

  • 10°CTypical temperature
  • 23 kphTypical wind
  • 4 mmTypical rainfall
  • 77Favourability /100
Typical conditions for the race date and locality, within the endurance-optimal window. These are climatological norms, not a forecast, and are shared across every distance at this event.

More race details

Is the Flint Hills 50 and Marathon Ultramarathon flat?

Its normalised GAP factor is 0.6% slower than a flat course, with about 655 m of total ascent.

How we calculated this

Published facts and derived model outputs on this page are tied to stored sources or a published, version-locked methodology. We show the provenance so runners, coaches and organisers can check it. Data on this page is current as of .

Derived numbers use scoring-methodology-v1.0.

Sources used on this page (3)

Read the full methodology →