>100km - <20hours - 1 day!

Yellowhammer Cahllenge


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Run, jog and walk at least 100km in less than 20 hours on one day, over the South Downs

Full route of 101.893km: 2231m of ascent, 2342m of descent

From Queen Elizabeth Country Park in Hampshire to the sea at Newhaven along the South Downs Way and the Sussex Ouse Valley Way

Association of Running Clubs Race Permit ARC20/015

Entries now open for all attempts from 1 January to 31 December 2020.

Entry is £100 per team (increases to £200 on 1 January 2020).

"’s £100 a team, so a bargain!" Stuart Holloway, propsective entrant

Each team member will receive a Yellowhammer Challenge technical cap as part of their entry.

Teams of two to four. It's not a relay. If you want a medal, you must do the whole thing.

You decide the day - and the hour - of your start - but you must finish the same day - by midnight - to get your medal!

Charitable fund-raising is NOT required (but you might as well, eh?!)

Teams are self-sufficient - but must have a support crew.

No race markers - navigation required.

No marshals - you have to look after yourselves.

No timekeepers - it's self-timed (use GPS and Strava to prove your success on the course).

See (or hear) a Yellowhammer (bird) for additional self-satisfaction.


The Yellowhammer's song is traditionally rendered as 'A little bit of bread and no-cheese.' Perfectly apt for Operation Yellowhammer.

A donation will be made to the RSPB at the end of the event, to help conserve the 'red-listed' Yellowhammer.