Gut Buster

Running (offroad)

  • Mortimer, United Kingdom
  • 30. December, 2018
  • Rating:


  • 10 Km

  • 16 Km

10 Km Short
10 Km
16 Km Middle
16 Km

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About the race

An All Time Classic

Now in its 8th year, the Gut Buster is returning for another epic mudfest. Simply a must-do. The Roman Walls of Calleva, a ford crossing, the brook crossing, the ascent of boggy gully, quiet country lanes and the famous finish across a cabbage patch field are all there. Mulled wine & Mince Pies at the finish, and then a fab medal and complimentary iTaB engraved with your name and finish time - what's not to like?


Gut Buster


Route Marked.jpg 394.96 KB

6 Review(s)

Review this race


Registration process

Race briefing


Quality of feed stations

Value for money


Natural beauty

Course uniqueness

Ease of navigation

Local support

Marshal supervision


Kathryn Renshaw

Completed as a first timer in 2017


Closing the year in the mud.

Loved it, attractive route which managed to distract me from the mud and two water crossings to wash away the mud and cool off the feet. The second perfectly positioned to clean the mud away before embarking on the ploughed field to the finish! 

Easy to park up and find the buses to the venue and a real fun atmosphere on the short trip added to the fun friendly feel of the day. 

Posted on 06.01.18

Kit Dali

Completed in 2017


Roman epic!

What a terrific event. The course takes in the surrounding fields of Butlers Lands Farm, the Roman Walls at Silchester (did anyone else see the alpacas?) and a ford crossing. The terrain was especially wet and muddy this year and the last stretch towards the finish line was an epic struggle.

This was great fun, well organised and as it was a sell out in 2017, I'll be sure to get my place confirmed for 2018 when entries open.

Thank you, MST. 




Posted on 01.01.18

Steve  Lawless

Completed as a first timer in 2017


Buster Gut in ploughed Field!

Gut Buster

A fantastic experience.  Brilliantly organised.  The muddiest day of the year and the ploughed field so hard. But a unique and wonderful experience. Many thanks to the organisers and the farmer.  

Posted on 01.01.18

Kirsty Moulsley

Completed in 2017


Totally brilliant race

really tough, but lots of mud and fun! Well marshalled brilliant race! 

Posted on 01.01.18

Tim Hubbard

Completed in 2017



Fab race  , supersticky , slippy course , like the new start line , excellent support and High fives all the way round , real friendly runners , did I mention mud ? oh yeh I did .  Definately one for your bucket list 

Posted on 31.12.17

Steve Ridley

Completed in 2016


Fantastic mudfest to end the year

Gut Buster

This was my second year competing at the Gut Buster, and I was eager to put in a good performance, having had a bit of a shocker in 2015; where I set out too hard, and my muscles weren't quite ready for it after a period of indulgence.

The race build up was in the usual MST relaxed style, with a couple of slight changes from last year.

Firstly, car parking was via a park and ride system, which worked really well; certainly better than the free for all on narrow country roads by the farm where the race starts and ends.

Secondly, rather than starting on the road next to the farm, we went the reverse way through the finish gantry and in to the mud straight away. This made for a tricky start, and resulted in the course being about quarter of a mile long.

The route is deceptively tough; not as much elevation gain as the other longer distance MST event (the Mapledurham 10), but where Mapledurham is largely on compacted trails, a significant portion of this route is straight through the middle of, or around the edges of, farming fields. This makes it incredibly tough on your legs, especially in soft conditions as we had this year. The final two miles were torture in particular - but I absolutely loved it!

The course is pretty well marked and marshalled, but as there are two distances running at the same time, there are a couple of points where the course splits. I found these to be well sign posted, but I know a couple of people did fall foul and take the wrong route.

This will definitely continue to be a race that forms part of my race calendar - not least because of the mince pies and mulled wine at the finish line! A second place finish this year helped too :)

Posted on 01.01.17