North Downs 50 Ultra Challenge
Sat 12 Jul 2025 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 12 Jul
  • #1 of 4
Surrey Sports Park, Guildford

50km

07:00

Age 18 & over

£139

  • 50 km trail running + 830 m ascent
  • Sat 12 Jul
  • #2 of 4
Surrey Sports Park, Guildford

25km Loop

07:00

Age 14 & over

£89

  • 25 km trail running + 530 m ascent
  • Sat 12 Jul
  • #3 of 4
Surrey Sports Park, Guildford > Milton Court, Dorking

1st Half

08:00

Age 14 & over

£89

  • 24 km trail running + 600 m ascent
  • Sat 12 Jul
  • #4 of 4
Surrey Sports Park, Guildford

Guildford 10K

10:00

Age 15 & over

£39

  • 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!

The Ultra Challenge Experience

This challenge is part of the UK's number one series of trek and trails runs for a wide range of ages, fitness and experience levels.

Choose your challenge and do it at your pace. The level of support enables you to go further, whilst enjoying the great outdoors, camaraderie, and the challenge. There are marquee rest stops, lots of food and drink, medical and massage teams, with a fully signed route to guide you.

A big finish-line celebration awaits with an amazing sense of achievement and once the aches subside you’ll feel energised, up for more of life’s real challenges – and, maybe, personal horizons redefined.

  • All fitness levels
  • Event village
  • Families
  • Newcomers

Your challenge, your way

Whether you’re a walker and new to challenge events, an experienced trekker, a marathon enthusiast upping the distance, or a seasoned ultra runner after UTMB points – there’s an Ultra Challenge® for you! Walk, Jog, or Run at your pace, as an Individual or a Team, for a charity of your choice or just for you. There’s an Ultra March® option for ‘fast walkers’ – and a new ‘Solo Challenger’ start time to join up with others.

Best support & hospitality

This Ultra Challenge® famously lays on the best support and hospitality available on any UK endurance-style event. This enables you to step up and confidently tackle an 'Ultra' distance, with the best chance of success - and to enjoy your challenge! Here's a summary:

Before

  • Challenge app
  • Facebook forum
  • Training guides
  • Fundraising support
  • Training walks and runs
  • Video briefings
  • Travel planning
  • Parking

During

  • Baggage transfers
  • The start line
  • Chip timing and tracking
  • Rest stops
  • Food and drink
  • Medical support
  • Camping

Along the route

  • Fully signed route
  • Apps, maps and GPS
  • Route safety experts
  • Emergency response
  • Trek masters
  • 24 hour control room

After

  • Finish line experience
  • Finish times and certificate
  • Shuttles and transfers
  • Hot meal
  • Medical care and follow up
  • Deals on future challenges

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

Event HQ

Surrey Sports Park
Richard Meyjes Road
Guildford
Surrey
GU2 7AD
UK

Map

Click here to open map

What3words

///years.spoon.loaf

Charity places

Charity places are also available in this event. Secure your place now with one of our charity partners.

Get charity place

I cannot thank everyone enough for their personal support and unlimited energy. 5★★★★★ and 10/10 in all my experiences.

For my first event, I was amazed at how well-organised it was. Particularly as I was on my own. Very well signposted. Excellent medical assistance. Very friendly crew. Fab event!

Races at event

  • Sat 12 Jul
  • #1 of 4
Surrey Sports Park, Guildford

50km

07:00

Age 18 & over

£139

  • 50 km trail running + 830 m ascent
  • Sat 12 Jul
  • #2 of 4
Surrey Sports Park, Guildford

25km Loop

07:00

Age 14 & over

£89

  • 25 km trail running + 530 m ascent
  • Sat 12 Jul
  • #3 of 4
Surrey Sports Park, Guildford > Milton Court, Dorking

1st Half

08:00

Age 14 & over

£89

  • 24 km trail running + 600 m ascent
  • Sat 12 Jul
  • #4 of 4
Surrey Sports Park, Guildford

Guildford 10K

10:00

Age 15 & over

£39

  • 10 km trail running + 233 m ascent