Fri 28 Feb - Sun 2 Mar 2025 Bath, Somerset, UK

The Tunnel

The Tunnel is a mind bending test of extreme endurance and sensory deprivation.

  • Fri 28 Feb - Sun 2 Mar 2025
Bath, Bath
The Tunnel

00:00

All ages

£260

  • 3 days multi terrain running

Event overview

This challenge is a 200 mile ultramarathon through the darkness of the UK'S longest foot tunnel. You will run on flat terrain but in the pitch black between 11pm and 5am, there will be low level lighting in effect at other times. The Combe Down tunnel is in Bath, Somerset and there will be a checkckpoint at the south end of the tunnel. You will have 55 hours to run approximately 100 'out-n-backs', or 200 times through the tunnel, which is possibly the greatest mileage ultramarathon ever run 99% underground. The Tunnel is sponsored by Chia Charge.

Event details

  • All fitness levels
  • Event village
  • Newcomers

Route

  • Check points
  • Flat
  • No headphones
  • Out and back

Sustainability

  • Bring your own cup

Entries

  • All ages
  • Enter online

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4 steps to wellbeing
Sleep well

A good night's sleep is an essential foundation for a healthy lifestyle, effective training and weight control.

Train slow

Low-intensity training is easier for you, reduces the risk of injury and helps builds an efficient aerobic system.

Eat natural

Cut out sugar & junk food, reduce carbs, eat natural foods and train your body to burn fat for fuel.

Get outdoors

Fresh air, natural light and reconnecting with nature all help to improve mental and physical wellbeing.