Sunday's tough multi-terrain race set off from Amersham Cricket Club under warm sunshine, with the highest number of entrants since 2012.
The event was first held in 2011 and, until this year, had always been won by a member of the home club.
That changed with a storming run from Owain Jones, who used to be affiliated to Chiltern Harriers but now competes for Bristol and West Athletic Club.
Jones led from the start and finished the race looking as fresh as if he had been on a Sunday stroll. His finishing time of 34 mins 59 seconds was a course record by some distance.
Runner-up was Tim Haughian of St Mary's Richmond in 37:53, with third place going to Paul Gregory of Vale of Aylesbury in 38:17.
The women's race was won by Phillippa Keast of Newquay Road Runners (43:04). Chiltern Harrier Cath Holloway was second (45:54) and Helen Livingstone a very close third (45:55).
Chiltern Harriers cleaned up in both the men's and women's team event, with some impressive individual performances to finish high up the field.
The winning men's team was made up of Nick Hughes (4th), Andy Hickman (14th), Andrew Wiseall (15th) and Jonathan Taylor (18th). Nick Hughes also picked up the prize for first man over 40 (V40) with a time of 38:29.
The winning women's team was Cath Holloway (2nd), Kate Loach (7th) and Charlotte Draper (8th).
Sunny Daze (Brian Gregory, Gill Baxter, Clare Davey and George Baxter) won the prize for first Fun Team.
Other category winners were Chiltern's Michael Turney (V50 in 43:42); Jonathan Bateman of Road Runners Club (V60 in 48:42); Jacob Hine of St Albans Striders (Under-20 in 41:59); Joanne Johnson of RAF Triathlon Association (V35 in 46:52); Claire Pusey (V45 in 47:29); and Patricia Keene of Burnham Joggers (V55 in 53:19).
Chiltern Harriers had 39 runners competing for the club (26 men, 13 women), with many more members and friends volunteering on the day.
After the 10k, a Family Fun Run was held. The mile-long race around the cricket field was open to all ages, with parents and grandparents running alongside their children (or sometimes way behind them!)
The first three boys and girls received prizes, with the talented Hughes family having to find the biggest space in the trophy cabinet.
12-year-old Millie Hughes (1st), her 9-year-old sister Maddie (2nd), and 7-year-old brother Alex (3rd), were all among the prize-winners, their success echoing that of their father, Nick, in the 10k race.
The other Fun Run prizes went to Max Baxter (1st boy), Will Alexander (2nd boy) and Eleanor Mayhew (3rd girl).
The next Chiltern Harriers AC event is the Herbert's Hole 10k multi-terrain race on Sunday, November 15th starting in Lowndes Park, Chesham. Details and entry forms are available on this website.