Sat 1 Aug 2026 Guildford, Surrey, UK

North Downs 50 Ultra Challenge

A fabulous challenge setting out from Guildford base camp on a looped route taking in some of the best of the Surrey hills, the North Downs Way, and the surrounding countryside.

4 races

  • Sat 1 Aug
  • #1 of 4
Loseley Park, Guildford

50km

08:30

Age 16 & over

£139

  • 50 km trail running + 830 m ascent
  • Sat 1 Aug
  • #2 of 4
Loseley Park, Guildford

25km Loop

08:30

Age 14 & over

£89

  • 25 km trail running + 530 m ascent
  • Sat 1 Aug
  • #3 of 4
Loseley Park, Guildford

1st Half

08:00

Age 14 & over

£89

  • 24 km trail running + 600 m ascent
  • Sat 1 Aug
  • #4 of 4
Loseley Park, Guildford

Guildford 10K

10:00

Age 8 & over

£49

  • 10 km trail running + 233 m ascent

Event overview

The routes have real variety and some wonderful scenery and fabulous views out to the south – plus they're easily accessible from London!

You’ll get full support and hospitality and with 25km and 10km options also available, along with optional University-style accommodation at basecamp –  there’s a North Downs Ultra Challenge for you!

Event details

  • Average fitness
  • Beginner-friendly
  • Event village
  • Families

Location

  • Bag transfer
  • Bar
  • BBQ
  • Cafe
  • Camping
  • Changing facilities
  • Entertainment
  • Free parking
  • Music
  • Park
  • Rural
  • Secure bag storage
  • Showers
  • Toilets

Races at event

  • Sat 1 Aug
  • #1 of 4
Loseley Park, Guildford
50km

08:30

Age 16 & over

£139

  • 50 km trail running + 830 m ascent
  • Sat 1 Aug
  • #2 of 4
Loseley Park, Guildford
25km Loop

08:30

Age 14 & over

£89

  • 25 km trail running + 530 m ascent
  • Sat 1 Aug
  • #3 of 4
Loseley Park, Guildford
1st Half

08:00

Age 14 & over

£89

  • 24 km trail running + 600 m ascent
  • Sat 1 Aug
  • #4 of 4
Loseley Park, Guildford
Guildford 10K

10:00

Age 8 & over

£49

  • 10 km trail running + 233 m ascent

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