Close to 1,500 runners took part in the 28th Chichester Priory 10k - and our photographer captured plenty of them on camera.
It was a chilly but very sunny morning for the race, which started and finished at Goodwood motor circuit.
If you ran, or someone you knew did, check out photographer Derek Martin's images from the event, above.
Here's who won the race - plus video of all runners at the start
This is the close finish, which saw seven finishers cross the line before the clock had ticked round to 30 minutes
See a report, pictures and full results in the Observer series - out on Thursday