Matthew Fayers claimed Hillingdon AC's best individual result of the day in a hotly contested South of England Championships held in Uxbridge.
The teenager turned in a good display to finish 10th in the U15 boys event in 15mins 20secs on a day when 2,500 competitors descended on Hillingdon House Farm.
Team-mate Jo Carton was 141st in 17.31 Luke Inkson (179th, 18.08), James Castro (207th, 18.43) and S Hobbs (218th, 19.04) helped the team to 27th place.
Stephen Crosbie also produced a fine 12.25 run as he came in 12th in the U13 boys race from a field of 244, ahead of James Hailstone (179th, 14.41) and Dominic Speight (193rd, 15.06).
The senior men's event attracted more than 700 entrants despite the muddy, demanding conditions and Paul Cuddihy led the Hillingdon challenge with 95th place in 59.15, seven clear of Daniel Thompson (59.26) with Martin Bateman 155th in 61.49.
The team finished 17th out of 52 with the aid of Jonathan Castro (173rd,
62.19), Brett Hutchinson (224th, 64.48), Das Anupam (240th, 65.23), Steve Hirons (257th, 66.07), Paul Williams (262nd, 66.14), Paul Leppard (263rd, 66.15), Richard Jenkin (307th, 68.20), Stevan Dokic (396th, 72.17), John Myall (467th, 75.38), John Bignell (525th, 78.22), Kevin Waterman (587th, 83.29) and Brian Feldman (635th, 88.25).
Robert Thompson was 27th in the junior men's race in 30.43.
In the U17 boys event James Laing was 64th of 252 finishers in 23.16, with Gavin Barclay (77th, 23.38), Carl Yates (88th, 23.53), James Francis (95th, 24.05), Matthew Walton (170th, 28.37), A Pal (178th, 30.01) and R Solanki (180th, 32.59) taking the team into 13th place.
Claire Vizard led the way for Hillingdon in the U17 women's race with 77th in 27.59 ahead of Hannah Wells (90th, 29.41) but they did not have enough competitors to register in the team event.
The U15 girls finished 26th thanks to Heather Gibbons (121st, 17.417), Esme Stallard (185th, 19.26), Eve Follows (197th, 19.54) and Jade Nettleton (218th, 21.56).
Rebecca Miles was the fastest of a large contingent of U13 girls as she came in 122nd in 15.28, with Katherine Newbery (127th, 15.31), Charlotte Cowper (163rd, 16.16), Lily Fawsett (196th, 17.10), Bryony O'Donnell (202nd, 17.37), Juliette Carton (217th, 18.54), Niamh Hobbs (218th, 18.56), Charlotte Steward (219th, 19.02) and Carys Tetlaw (220th, 19.19) helping the team to 20th place.