Christian Strzadala sliced nine seconds off his previous best in winning the Richmond Park time trial in 16:55, from Stragglers' Graham Brook (17:01) and Ranelagh's Jonathan Stacey (17:06).
Tadworth's over 60 veteran Geoff Newton posted the top age-graded performance in finishing 14th (19:57).
West 4 Harriers' Alison Brownhill won the women's race (19:52), taking 25 seconds off her previous best.
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