• Ultramarathon
  • 167 km
  • Farnham to Ashford
  • Event dates
  • Entry from £220
  • Past event

North Downs Way 100 Ultramarathon

This race edition

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

Entry options

2026 edition

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

Modelled energy-cost change 0.4% versus flat · net elevation 59 m · true cost £350

Decision summary

North Downs Way 100 Ultramarathon at a glance

Route ascent
155 m

Lower than 97% of comparable mapped races

Cut-off average pace
10:47/km

30:00:00 total limit divided by distance. Check gun/chip timing and intermediate limits; allow time for stops.

Entry fee
£220

Lower than 17% of comparable known fees

Typical conditions
64/100

Historical race-date favourability, not a forecast

Evidence depth
37 verified facts

Stored GPS route

Quick answers

What runners ask first

North Downs Way 100 Ultramarathon route map

raceindex.org has a GPS course file for North Downs Way 100 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 North Downs Way 100 Ultramarathon?

The North Downs Way 100 Ultramarathon route has 155 m of ascent, 95 m of descent and an estimated 0.4% grade-adjusted pace penalty versus a flat route.

Where does the North Downs Way 100 Ultramarathon route go?

The North Downs Way 100 Ultramarathon route starts at Farnham, Surrey and finishes at Julie Rose Stadium, Ashford, Kent. Underfoot, expect trail. It passes Guildford, Box Hill, Reigate Hill, Oxted and Wrotham. 103 mile continuous point-to-point trail race on the North Downs Way.

What should runners know on race day for the North Downs Way 100 Ultramarathon?

Bag drop is available. 13. True.

Race character

Scenery

  • Countryside
  • Forest
  • Riverside
  • Historic

Atmosphere

  • Scenic Tour
  • Nighttime
  • Competitive

Terrain

  • Trail
  • Mixed
  • Road
Elevation character
Hilly
Technicality
Moderate

Entry, logistics and records

Records and field

Men's course record
15:18:41 (Mark Darbyshire)
Women's course record
18:13:58 (Alice Robinson)
Field size
250
Field cap
250

Entry requirements

Entry status
Past event: The listed edition date has passed.
Cut-off
30:00:00
Prior experience
must have completed a 50-mile race within 15 hours

Race day logistics

Aid stations
13
Pacers
Yes
Bag drop
Yes

Access and course status

Start
Farnham, Surrey
Finish
Julie Rose Stadium, Ashford, Kent

Course facts

Course type
Point To Point
Surface
Trail
Landmarks
Guildford, Box Hill, Reigate Hill, Oxted, Wrotham, Medway Bridge, Detling, Hollingbourne, Charing, Ashford
Notable features
  • 103 mile continuous point-to-point trail race on the North Downs Way
  • 80% trail and 20% road
  • steepest climb up Box Hill
  • 50 mile point at Knockholt Pound
  • minimum 12 fully stocked aid stations

How hilly is the North Downs Way 100 Ultramarathon?

97%
  • Steep descent 0%
  • Descent 1%
  • Flat 97%
  • Climb 1%
  • Steep climb 0%
Total ascent
155 m
Net elevation
+59 m
GAP factor
0.4%
Longest climb
39,450 m at 0.1%
Gradient mix and ascent are derived from the course geometry under our published normalisation, not taken from organiser marketing.

What does it really cost to run?

Estimated cost to the start line from National Average
Entry fee£220
Travel (modelled)£40
Accommodation (modelled)£90
Estimated total£350
Entry fee is a sourced fact. Travel and accommodation are modelled estimates for a typical runner from this region, not quoted prices.

What are typical race-day conditions?

  • 18°CTypical temperature
  • 20 kphTypical wind
  • 2 mmTypical rainfall
  • 64Favourability /100
Typical conditions for the race date and locality, warmer than 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 North Downs Way 100 Ultramarathon flat?

Its normalised GAP factor is 0.4% slower than a flat course, with about 155 m of total ascent.

How much does the North Downs Way 100 Ultramarathon cost?

The adult entry fee is £220, and the estimated true cost to the start line is about £350 including modelled travel and accommodation.

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