Three Shires Way Ultra & Marathon

SATURDAY, 21ST JUNE 2025

50 Mile Ultra and Marathon distance races through the quiet rural landscapes and ancient woodlands of Bucks, Beds and Northants along the Three Shires Way.

Race information

Whether you’re stepping up in distance or looking for a decent challenge through wonderful countryside, both races are suitable for beginners and seasoned runners alike.

Being a bridleway the routes are well way marked, so navigation is made fairly easy (and we’ll mark any sections where you may need some help!).

Entries

Entries will open soon on Let’s Do This, and are priced at £70 for the 50 mile ultra and £40 for the Marathon. Runners who are members of a club affiliated to UK Athletics receive a £2 discount.

Minimum age for entry is 20 years old on race day for the 50 miler, and 18 years old on race day for the Marathon.

The race cut-off times are 14 hours for the 50 miler and 8 hours for the Marathon, and there will be progressive cut-off times in place at various checkpoints based on the race cut-off times. Details on the location of checkpoints and cut-off times will be published in due course.

No pacers are permitted in either race.

Entries, and transfer of entries, will close 7-days before the event.

Start time/location

50 Mile Ultra
Race HQ and the Start is located at Hanslope Village Hall, Newport Road, Hanslope, Milton Keynes MK19 7NZ

Registration will be open from 07:00. The race will start at 08:00.

The finish is located within Marlow Park, Grafham Water, Grafham, Huntingdon PE28 0BH

Marathon
Race HQ and the Start is located at Yelden Village Hall, Spring Ln, Yelden MK44 1AT

Registration will be open from 09:30. The race will start at 10:45.

The finish is located within Marlow Park, Grafham Water, Grafham, Huntingdon PE28 0BH

Transport to the start

As both races are from point to point, we will be operating coaches from the Finish, at Marlow Park, Grafham Water, to the respective Start lines. Further details to follow.

You can book your place on the coaches when making your entry. You can also add a place on the coach after you have made your entry by logging into your Let’s Do This account (please note: Let’s Do This will charge an admin fee if adding a coach place after you have made your entry).

The routes

Linking with the Swan’s Way at the start, the 49 mile Three Shires Way takes in the county boundaries of Bucks, Beds and Northants at Threeshire Wood, with a 12.4 mile loop around Grafham Water to finish. We’ve added a section to the village hall at Hanslope to get to the magic 50, and created a marathon route that starts at Yelden.

You can view the routes for both distances and download the GPX files below.

Download the 50 Mile Ultra Route GPX
Download the Marathon Route GPX

On-course support

As with all Race Harborough events, there will be professional first aid on hand at the start and finish with the ability to access runners on the course. Race Harborough volunteers will also be on-course to provide hydration and nutrition at a number of checkpoints/aid stations on the routes.

Kit

Trail shoes are advisable as there will be a mix of terrain throughout. In terms of mandatory kit, the following must be carried:

• Full charged mobile phone including the numbers of the Race Director and Race Medic
• Water bottle/Bladder capable of carrying a minimum of 1 litre
• Survival blanket
• Waterproof jacket
• Whistle
• Long sleeved base layer or fleece top
• Our races are cupless, so you will be required to bring your own cup
• Reflective top/bands (50 miler only)
• Hat and gloves (50 miler only)
• Headtorch (50 miler only) – sunset is due to be at 9:54pm

Prizes

There will be prizes for top 3 male and female finishers in both races, and all finishers will receive a specially commissioned event medal.

Race merchandise

Men’s and Women’s black short sleeved technical t-shirts (£16), black unisex hoodies (£25) and black trucker caps (£15) are available to purchase via Let’s Do This. These can be pre-ordered up to 3 weeks before the event. If you decide to log back in to amend your order (to order a tee shirt, not to edit details), then Let’s Do This will charge an additional card handling fee.

There will not be t-shirts/hoodies available for purchase on race day, although trucker caps will be available to purchase. A link to the sizing charts is available here: MALE / FEMALE / HOODIE

Free race photos!

As with all Race Harborough events – you don’t pay for your race pics! Free digital downloads of your race are available to download soon after the race finishes and we’ll announce their availability on our Facebook page.

Charity

For 2025, the main focus of our charity support will continue to be the Jubilee Foodbank, Market Harborough, and the Weston Favell Centre Foodbank, Northampton. Everyone who enters a Race Harborough event in 2025 will be given the opportunity to make a donation to support these good causes and, we hope, our event community will rise to the challenge and help make a difference to those that need it most.

Latest updates

For the latest updates about this and other Race Harborough events, please Like & Follow the Race Harborough Facebook page.

Results

2025 results will appear here after the races.

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