23 Miles
Sat 11 Oct 2025 Ambleside, Lake District National Park, UK

Lakes in a Day | 23 Miles

Want the excitement of being part of Lakes in a Day but with less navigation? This half distance option takes you on a journey from Ambleside to Cartmel on a fully waymarked route.

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  • Sat 11 Oct 2025
Ambleside Town Centre, Ambleside > Cartmel Priory School, Grange-over-Sands

23 Miles

14:30

Age 18 & over

£75

  • 23 miles trail running + 850 m ascent

Event overview

This renowned event aims to be one of the best you've ever had on an ultra run, so a journey that is inspiring, daunting and stunning has been created in equal measure.

runners

Highlights

  • Ultra run the Lake District in a day
  • Reach the high fells and stay up
  • Stunning Helvellyn Ridge
  • Western shoreline of Lake Windermere
  • Well-stocked checkpoints
  • Change shoes after the river crossing
  • Logistics and accommodation
  • New shorter option for 2025
  • Optional recce days
  • Live tracking, t-shirt and medal

This event is part of Lakes in a Day.

Event video

  • All fitness levels
  • Event village
  • Newcomers
  • Spectators

Timetable

Friday

  • 18:00 | Campsite opens
  • 19:00-22:00 | Registration

Saturday

  • 04:45 | Breakfast available
  • 05:45 | The coaches will leave Cartmel prompt - faffers and the constipated will not be waited for
  • 06:30-07:30 | Registration at Caldbeck Parish Hall for people who cannot make it to Cartmel
  • Afternoon | Food for runners and spectators will be available to purchase 
  • 14:30 | 23 mile event begins

Sunday

  • 09:00 | Campsite must be clear by this time
  • Morning | Food for runners and spectators will be available to purchase 
    If you are leaving your car at Cartmel, you must register on the Friday evening. There will be no registration at Cartmel on Saturday morning.

Mandatory kit

A mandatory kit list is readily available.

  • Bag storage
  • Bag transfer
  • Cafe
  • Camping
  • Changing facilities
  • Mountains
  • Showers
  • Toilets

Event HQ

Cartmel Priory School
Headless Cross
Cartmel
Grange-over-Sands
Cumbria
LA11 7SA
UK

Camping

Cartmel Racecourse, Cartmel LA11 6QF.

Camping is available on Friday night at Cartmel and Saturday (£12) for those who finish late or have a long journey home after the race. To confirm, camping on the Friday / Saturday night is for tents and short wheel base campers (e.g. VW T4 / T5’s). It is not suitable for larger camper vans or motor homes. Vehicles longer than 5m are not permitted on site. 

Coach transfer

Please book by 21st September (£12).

Registration

Caldbeck Paris Hall is 500m from the start.

Public transport

Cark and Grange Over Sands Railway Stations are only 3 miles from Cartmel. A taxi would be around £20. Please book in advance.

Food and drink

There will be event catering at Cartmel School from Friday evening selling food and hot drinks for anybody arriving to camp at the racecourse or coming to register. They will be selling food for breakfast on Saturday morning from 4.45am before the coaches depart at 5.45am prompt. On Saturday afternoon and into Sunday morning as well as providing the runners meal they will also be selling hot food and drinks to any supporters waiting to see friends and family members. 

runners

  • Check points
  • Cut off time
  • First aid
  • Food stations
  • Hilly
  • Marshals
  • Mountainous
  • Navigation required
  • Point to point
  • Single start
  • Toilets
  • Way markers
  • GPX available

GPX route

The route is displayed on the map above.

Overview

The Lakes in a Day Half has been designed to be the perfect challenge for those building up to the full Lakes in a Day, training for a first ultra, or simply seeking a challenging trail run. Explore the undulating hills of the southern end of the Lake District, offering a stunning yet achievable adventure for all levels of trail runners.

Journey from the bustling Lake District Town of Ambleside to the quieter village of Cartmel. All the fun of the longer distance event but on a fully waymarked route. Follow the western shoreline of Lake Windermere, taking in Claiffe Heights and Bigland Tarn. 

Waymarking

The route is waymarked with yellow arrows on a black background from Ambleside to Cartmel, however you will be given a map to carry in case it is needed. GPS units may be used as back up, in conjunction with your map.

  • Bring your own cup
  • Plastic bottle free
  • Sustainability policy

This event is trying to raise its sustainability game. Yes, it's small stuff, but it's a start, and every bit helps. There are two main changes:

  • Cups

    Feed station cups are this event's biggest source of waste so it is completely stopping the use of them. There will be no cups at feed stations. You will need to bring your own hydration system, whether this is a camel back, hydration vest, soft bottle or simply bring your own collapsible cup, carry this with you and it can be topped up at the feed stations. 

  • T-shirts

    Many of you love and use them, however, some of them get disposed of without ever getting used. So, when you enter you will have the option to choose "No T-Shirt". The cost of your entry will remain the same, and the equivalent of the cost of your T-Shirt will be donated to the selected charity. 

  • Chip timing
  • GPS tracking
  • Map
  • Medal
  • Post-race meal
  • Pre-event training sessions
  • T-shirt

Included

  • Professionally organised race
  • Full race medical first aid cover
  • Live tracking
  • 1 well-stocked feed station
  • Event finishers medal

Prizes

  • Awards for 1st, 2nd and 3rd placed male / female – Awarded on the finish line
  • Age category awards: Senior18-39/V40/V50/V60/V70 1st Place male & female – Awarded by Email post event

Recce days

There will be seven recce days over the coming months, each recce day is guided by a member of the NAV4 Team who have endless experience of skills and safety.  The team are happy to impart their knowledge along with hints and tips on how to best cover each section of the event route.  These days are an excellent opportunity to get to know the route, get hints on the best line for you and to brush up on your navigation skills. This is also the perfect opportunity to try out your kit, figure out what you need, how you will carry it and when to use/not use the items you have with you.

There are also two skills based sessions, one offering a half day on Hallsfell Ridge for those nervous of the terrain and the other is ‘LiAD Skills on The Dodds’ with an enhanced navigational and hillskills input.

  • Saturday 15th March – Ambleside to Cartmel
  • Saturday 10th May – Caldbeck to Threlkeld
  • Saturday 19th July – Helvellyn to Ambleside
  • Saturday 23rd August – LiAD: Skills on The Dodds
  • Sunday 24th August – Caldbeck to Threlkeld
  • Monday 25th August – Hallsfell Skills Sessions


  • Age 18 & over
  • Entries open
  • Enter online

Entry fees

Entry fee

£75.00

Enter now

Stunning views, excellent aid stations with proper toilets, the most helpful and supportive marshals I've known and some great challenging terrain. One to sign up for. Nicola J

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  • Sat 11 Oct
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Caldbeck, Caldbeck > Cartmel Priory School, Grange-over-Sands

50 Miles

08:00

Age 20 & over

£130-£160

  • 50 miles trail running + 4000 m ascent