P12 - The Longest Attended Day

Dorking, United Kingdom • 19 Jun 2027

P12 - The Longest Attended Day

P12 is an endurance event held on Saturday 19 June 2027 at Denbies Wine Estate in Dorking, Surrey. The format requires participants to run 1 mile on the hour, every hour, for 12 consecutive hours on an off road trail through the wine estate. The course will be set up as flat-ish as possible.

The event uses full chip timing and awards a 12 mm thick P12 finisher's medal to those who complete all 12 hours. Organisers will be on site for 24 hours across 19 and 20 June, and participants may choose a start time during that period that allows 12 consecutive hours of running.

On-site camping for tents is included; mobile homes and campers are not permitted. The event provides 24 hour access to toilet facilities and daytime access to an onsite cafe with hot food and an outdoor serving hatch offering teas, coffees, bacon rolls, sausage rolls and vegetarian and vegan options. Seating on site is available for rest between miles.

A virtual version will run simultaneously so there are both attended and virtual participants. Places for the attended event are limited. Entry fees are listed as £47.95 for affiliated runners and £49.95 for unattached runners. UK Athletics distance restrictions apply to participants aged 20 or under and full terms and conditions apply. Visit the organization's website for the most recent information.

Race information

12 mi
P12 - 12 Miles Total (1 Mile Every Hour)
Visit the organization's website for the most recent information.
Trail runs nearby

A trail event at Housedean Farm near Lewes offering a half marathon and a 10K through South Downs scenery. The course mixes gravel paths and well kept trails and includes chip timing, aid stations and on site camping.

A Half Marathon at Box Hill Fort (Tadworth) on 28 June 2026 with more than 3000 feet of ascent and descent. The route runs mainly on rough tracks and offers views over the North Downs, the Mole Gap, Denbies Vineyard and Dorking.

Pretty Muddy 5k at Blackheath Common on 28 June 2026. A grassy obstacle course with staggered wave starts, marshals on the route, toilets and refreshments available, and a minimum fundraising target of £50.

A guided 10 km trail run around the Devil's Punchbowl in Hindhead, Surrey. Hilly evening and night runs in a group setting with parking available and a kit list provided; cost £22 per person.

Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.