The Waddesdon 5K race, run in the grounds of the stately home on Wednesday evening, drew a field of 225 athletes from around the region.
Chiltern Harriers had several athletes up for the challenging out and back course, involving a tough climb on the way back.
Chiltern's medal winners on the night were Judith Orr, second female Vet 35, 39th overall, in 20.16, and Brenda King, second female Vet 55, 169th overall in 28.04.
Also competing were Michael Turney, 15th overall and 4th Vet 40 in 18.29, Ali Young, 31st overall and third senior woman. Isabelle Winter was 64th in 21.25, Paul Theobald 97th in 23.07, Steve Chambers, 174th in 28.31.