PHOENIX - P12 - The Longest Attended Day 2025

Saturday, 21 June 2025 @ 08:00

Think you could run 1 mile on the hour every hour for 12 hours? Easy right?.

Then come and join us for our 'attended' version of the P12 to be held on the summer solstice weekend on 21st June 2025 at the lovely Denbies Wines Estate in Dorking.

How does a P12 work?
Pretty simply really - we'll have a 1 mile route set up (as flat-ish as possible) and then at the same time each hour, you run 1 mile and then repeat 12 times across 12 consecutive hours. Simple.

The event includes full chip timing and our legendary 12mm thick P12 finisher's medal for all those who complete the 12 hours. We'll be on site for 24 hours from 08.00am on 21st June through to 08.00am on 22nd June so for the P12 you can actually turn up and start at anytime between 08.00am and 8.00pm on June 21st which will still allow you 12 consecutive hours in which to complete your P12. Pretty cool - flexible start times so you could come and do a night P12 if you elect to start later in the evening say 7 or 8pm and then run your 12 hours through the night. It's up to you.

There's on-site camping included for tents (no mobile homes / campers I'm afraid) or if you can't be bothered to pitch an actual tent then onsite sitting around in between miles is included and 24 hour access to toilet facilities. During daytime hours there is access to the onsite cafe which serves a multitude of hot food and has an outdoor serving hatch for teas, coffees, drinks, bacon rolls, sausage rolls and a selection of vegetarian & vegan food

We'll also be co-ordinating our VIRTUAL version of this event simultaneously across the same time period for a truly integrated 'V-Live' event with both attended and virtual runners in unison.

Places will be strictly limited for the attended event and if you don't get a space then please do consider joining us virtually to be part of this epic endurance challenge.

1 mile on the hour every hour for 12 hours. Off road trail, through the wine estate.

The details ...

  • When

    Saturday, 21 June 2025 @ 08:00
  • What

    1 mile | Flat / Undulating | Trail
  • Where

    Denbies Wine Estate, London Road, Dorking, RH5 6AA
  • Max' Entrants

  • Close

  • Min' Age

    18 yrs


Organiser T&C's

All entries in accordance with Phoenix Running terms & conditions, available in full here.


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PHOENIX - P12 - The Longest Attended Day 2025

  • Affiliated £47.95
  • Unattached £49.95