All contenders must understand that they atempt this route entirely at their own risk. 
Fell-running and open-water swimming carry inherent dangers and it is 100% the contender’s responsibility to recognise the risks and be sure they have taken appropriate steps to mitigate them.  You should be physically capable, have the necessary skills and mountaincraft and be properly equipped before you consider an attempt.

The guidance on this website is provided purely on an informational basis and should not be taken as definitive.   The authors cannot be held in any way responsible for any errors or omissions. 

Heat Exhaustion in Snowdonia!?!

The style each competitor undertakes the challenge in is entirely down to them. However we recommend considering:

  • Leaving a route plan and timings with someone who can raise the alarm if required.
  • Getting to know these mountains and lakes and your own abilities in as safe a manner as possible prior to trying the whole route.
  • Groups of three or more at all times.
  • Keeping together and looking out for each other.
  • Carrying a Personal Location Beacon (PLB).
  • Carrying appropriate food and hydration to ensure peak performance
  • Thoroughly planning for all eventualities.
  • Constantly assessing changes to the terrain, group, weather, time and support and making safe decisions to compensate for these changes.
  • Carrying appropriate safety kit for the conditions.
  • Having appropriate safety cover available on the swims. Cold incapacitation is a real risk in these sorts of challenges.
  • Ensuring you have the necessary Ability and/or cover to to get yourself or others in the group to safety if you encounter any problems during the swims. If your support cover has been blown down the lake because of the wind, or they’re not capable of getting you into the boat then they are of limited use.
  • Using wetsuit’s, gloves, shoes and hoods that are appropriate to the conditions.
  • Ensuring that you can access your PLB and whistle whilst swimming.
  • Taking note of any warning notices around the water and ensuring the water is safe to enter.
  • Taking care when entering and exiting the water.
  • Keeping an eye out for other water users.
  • Being prepared for the effects of cold water emersion, and ensuring you have acclimatised sufficiently to the water temperature.
  • Practising and training for the transition from running to swimming (and then running).

You should also ensure you have appropriate knowledge and experience in:

  • Navigation
  • Wilderness travel
  • Covering tough mountain terrain
  • Wild swimming
  • Interpreting weather and its effects
  • Emergency procedures
  • First aid

Kit suggestions.

Long Swim/Runs have all sorts of kit conundrums! © Clare Regan

We would expect that if you have the required experience and competence to take on this challenge you should be fully capable of deciding on the appropriate kit to take. However we all forget things on occasion so here is a non-exhaustive list of suggested kit.

  • First aid kit
  • Emergency whistle
  • Suitable scale maps covering the whole route
  • Compass 
  • Emergency food 
  • Personal Location Beacon (PLB)
  • Full waterproof body cover, with taped seams
  • Softshell top
  • Spare base layer top and bottom, should be full length bottoms & long sleeve top. In dry bag
  • Hat and gloves, no matter what time of year. In dry bag
  • Head torch, with fresh batteries along with spares just in case. Waterproof or in dry bag
  • Fully charged mobile phone
  • Emergency foil bivvy bag or blanket. Or group shelter if in a group
  • Water bottle or bladder
  • Plenty of food and nutrition.
  • Rucksack
  • Float bag, easily large enough to fit all your kit and still inflate. Ensure it is done up securely before each swim. This could save your life if you get into trouble on one of the swims
  • Wetsuit
  • Wetsuit gloves and boots
  • Silicone or neoprene Swimming cap or hood
  • Hand-warmers/deep heat simple tasks such as removing a wetsuit can become impossible with cold hands after a swim.