Sat 1 Aug 2026 Guildford, Surrey, UK
North Downs 50 Ultra Challenge | 50km
Join a mid-summer North Downs 50 Challenge! This looped route is set in an area of outstanding natural beauty of the Surrey Hills, taking in chalk ridges and ancient woodlands.
Enter now- Sat 1 Aug 2026
Loseley Park, Guildford
50km
08:30
Age 16 & over
£139
- 50 km trail running + 830 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!
This event is part of North Downs 50 Ultra Challenge.
Event details
- Average fitness
- Beginner-friendly
- Event village
- Families
Route
- Check points
- Distance markers
- First aid
- Food stations
- Marshals
- Sweeper
- Toilets
- Undulating
- Water stations
- Way markers
Location
- Bag transfer
- Bar
- BBQ
- Cafe
- Camping
- Changing facilities
- Entertainment
- Free parking
- Music
- Park
- Rural
- Secure bag storage
- Showers
- Toilets
What's included
- 2 Running Stones
- Camping
- Chip timing
- Drinks
- Event app
- Fizz at the finish
- Goody bag
- GPS tracking
- Map
- Massage
- Medal
- Post-race meal
- Pre-event training sessions
- Snacks
- Training plan
- T-shirt
How to enter
- Age 16 & over
- Entries open
- Charity entries closed
- Charity places
- Enter online
- Event merch available
Other races at event
- 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