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Distance / Type
10km & 10 Mile Trail Run
Date and Time
Sunday, 23 May 2021 @ 10:00

Butlers Lands Farm


All event car parking will be at the Mereoak Park & Ride site (RG7 1PB). Mereoak Park & Ride is signed half a mile south of Junction 11 of the M4 along the A34.

10km - £27
10 Mile - £30
07917 666888

Click below for the results of the May 2021 event!


All the things you love about the Gut Buster, will be there again in 2020 – well 2021 now! The water crossings, Roman Walls, fields, footpaths, and what is sometimes the hardest last 400m in British Athletics [farmer/ crop rotation dependent]. The epic mudfest of 2017 will be talked about for years to come…what more excuse do you need to escape the family during the holiday season – even it’s Easter and not Christmas as usual!

This year the event will have a few changes to ensure everyone’s safety and that the event is COVID-19 safe. This will include, but not limited to:

  • Staggered start times with small groups of runners starting at timed intervals apart from the next group
  • Faster runners will start first to reduce the likelihood of needing to overtake
  • The event will be limited to fewer participants than in previous years
  • No on the day entries
  • Race numbers will be posted prior to the event
  • We do not encourage spectators at the event
  • There will be no water stations – you will need to carry your own water for the event

“Definitely a race everyone should do. 2 hour cut off is achievable by runners and joggers alike. Most fun I’ve had on a trail run.”

“Absolutely loved it. Proper mudfest. Great logistics. Thanks very much for organising it!”

“This is a great event and an absolute must do between Christmas and New Year to burn off some Christmas calories. A supererb course, great fun and always muddy! Sign up ealry as it always sells out.”


No, all parking is at Mereoak Park & Ride (RG7 1PB) – which is free to park at. There is a FREE shuttle bus to/from Mereoak Park & Ride to the event start, approximately a 10 minute journey.

Toilets, Baggage Area (bags left at your own risk), Massage & Catering Van.

The minimum age for the 10km is 13 and 16 for the 10 mile event.

Yes, there is a 2HR CUT-OFF at the 8 mile point in the 10 mile event. If you miss the cut-off you will be directed to the finish thus completing a total run distance of c.8.5 miles.

  • Your best running legs!
  • A change of warm and dry clothes and trainers for after the event
  • Your own drink bottle to put at the finish line – there will be LIMITED water and cups available
  • A cup (not a jug!) for some mulled wine after the run

Yes, you will be able to download them for FREE after the event from FlickR with thanks to Peter Cook.

Yes, but on a short lead. Also, please note – you will not be eligible for any podium prizes, but we will give the dog a bone!

No – for everyone’s safety we stipulate that headphones are not allowed at this event.

Yes, we support The Brain Tumour Charity at this event.

Entry fees are non-refundable, should the event not be able to be staged the event will be held virtually.

Mapledurham 10
Sunday, 3 December 2023
10km, 10 Mile and Half Marathon Trail Runs!
Mapledurham Estate, Reading
Gut Buster December
Saturday 30th December 2023
10km & 10 Mile Trail Run
Butlers Lands Farm, Reading
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