See You On 21/04/24

Thanks to all of our runners, sponsors and volunteers, see you next year.

M12k A Brief History:


The Marnhull 12k was brought back to life in April 2016 by a couple of Dorset Doddlers and St Gregory’s School PTFA. The original race was held some years ago and we still follow most of the original route.

We are very proud of our race, all proceeds help fund St Gregory’s Primary School.   You’ll see lots of people from the local community all helping deliver an enjoyable, safe experience for runners and supporters alike.

All proceeds from the day will go directly to the school, in the past the race has helped fund the swimming pool and other valuable resources.  Your support makes a real difference to the children.

On this page you’ll find lots of information and updates will appear as and when we’ve got any news.  Be sure to check the course in our video below.

We don’t want anyone leaving us without a full belly, you’ll have bacon rolls, tea and cake to enjoy at the finish line. 

Fancy yourself as quick? why not try and better our male and female course records noted below along with archive results.

Want to know if you are entered? click here to find out.

Above all, come and enjoy yourself, spring is a wonderful time to run and Marnhull looks great in the spring.​

Organised according to UKA Rules: Permit 2023-43869

Accurately measured.  Certificate Number: 19/578

The countdown is on

race starts in:

2024/04/21 10:30:00

The Somerset County Cars Toyota Course Record Competition

Think you can beat our course records?

Win a Northface Jacket if you do.

Men's Course Record

Men's Course Record


Chris Peck

Egdon Heath Harriers


Ladies Course Record

Ladies Course Record


Vicki Ingham

Poole Runners


Meet our classes

Archive Results

Without our sponsors the race you’ll enjoy just wouldn’t be the same.  We’d like to take the opportunity to thank this years main sponsor Spar.

Tom Hawtree and the team at Marnhull Stortes (Spar) are fervent supporters of the school, this year they’ll be supplying each of our runners with not only their race number and water at the finish line but financial assistance to help us stage a successful race.

The race will commence just near the shop so please fill up whilst you’re nearby.

Spar UK have been great supporters of British Athletics and  have help bring communities together through sport so a natural fit with the M12k.

We are blessed to have so many local businesses helping our school through sponsoring the race, keep an eye out on race day for our KM sponsors:

Dorset Tech

Dorset Doddlers

Wyke Farms

Compton Smith Interiors

Marnhull Fest

Hook Electrical Contractors

AJN Steel

Cooks Garage

Camelot Builders

Concorde Flooring & Ceilings

Symonds & Sansom

Luna Electrical Services

Total Decorating Specialists Ltd

Prestige Roofing

Paddy Roche Agricultural Services

A race without prizes would be a bit mean, we’ll have plenty for our winning runners.  Without the generous donation of prizes we’d not be able to raise as much money for the school as we’d wish.  Thanks to our prize donors:

Hall & Woodhouse – Providing prizes for 1st Male & Female runners as well as fastest male and Female local runners

Thomas Fudge’s – Memento for all M12K runners

The Dorset Dairy Co – Providing milkshakes for the fun runs

Friars Moor – Providing prizes for the team competition

Prizes will be awarded as follows:

1st, 2nd and 3rd Male
1st, 2nd and 3rd Female

MV40 & FV35

MV50 & FV45

MV60 & FV55

1st Male and Female Team (based on aggregate time of the first 3 members of a qualifying club).

1st local male and female (must be residents of Marnhull)

The Route


Commencing on New Street in Marnhull before taking in Fifehead Magdalen and then returning to St Gregory’s School the M12k is best described as undulating.

A challenge for all abilities, there’s ups , downs and a bit of flat, the scenery shows North Dorset at it’s best with winding country lanes and some great views, particularly as you crest the climb atop Fifehead Magdalen.

Take a look at out course video for a better insight, this was shot during the colder months so please expect the course to be greener come April.

Bounceabout Fun Runs

Why not bring along the children and enjoy our kids fun runs.

We have 2 distances: 1/2 mile or a full mile around the field adjacent to the school.  Footwear will be weather dependant.

Each runner will get a medal and a Dorset Dairy Company milkshake.

Special thank to our fun run sponsor Bounceabout who are also kindly supplying a bouncy castle at the school for the children to enjoy. 

Entries are £3 and are on the day only within the school hall.

We have 75 places available.

Kids Fun Run

Unable to Run?

Swapping of numbers is encouraged but the race organiser should be made aware of the swap taking place. The runner retiring should contact the organiser to give the details of the runner taking over the entry. The new runner should then email/post a completed ENTRY FORM.

If you do not have somebody to give your place to, you can seek a refund or deferral for your entry or you may chose to donate your entry fee to the school. Refunds will no longer be available after the 12th April 2023.  

Any transfer, refunds enquiries or other questions should be directed to

Race Full?

If the race should fill we will have a waiting list, you’d be most welcome to join it.

To do so please email and we will be in touch should a place arise.

Race Cancelled?

In the event of the race being cancelled entrants will automatically be entered into either a rearranged race date or next years event, whichever is soonest.

Refunds can be requested by entrants rather than taking up the deferral.

2022 race photo’s

Special thanks to our photographers on the day who kindly gave up the time to capture the event.

Tim Orman and Mike Caine have also allowed these images to be accessed by everyone free of charge.

Click here for photos