Chris Busaileh's return to form continued on Saturday with a blistering victory at the Self Transcendence 10-mile road race in Battersea Park.
The 29-year-old Herne Hill Harrier managed to pull away from former GB international Huw Lobb with a mile to go, clocking a swift 51 minutes and 34 seconds.
The success is a major boost for Harriers ahead of the South of England Road Relay Championships on March 24, with Busaileh expected to be the lynchpin of the 12-man team.
Harriers also dominated the top positions at the Frank Harmer 10k in Brockwell Park on Sunday.
The annual race, which is organised by the Tooting-based club, was won by Blackheath's Colin Norris in 33:43, but Herne Hill had four runners in the top-eight. Robin Jones was second in 34:48, with Mohammad Ismail thirrd in 35:36. Jonathan Ratcliffe clocked 36:15 to finish fifth, with Gary Ironmonger finishing eighth in 37:50.
Clapham Chasers' Rachel Bentley was the first woman, finishing in 13th overall in 39.28. Hayley Cook was second woman and first Herne Hill lady, clocking 42:43 for 31st position. Other leading Harriers included Rebecca Barrow (40th in 43:56), Natalie Zara (48th in 44.42) and Louise Malone (63rd in 46:28).
In other weekend races, Jonny Muir was second at the Steyning Stinger Marathon in the South Downs, clocking 3:04:16 on a hilly course.
At the Bath Half Marathon, Francis Marsh finished 53rd with a time of 73.59, while Suzanne Swaine clocked 86.50 for 384th overall.
Robert Edwards continued his fine recent form over 5km by clocking 17:04 at the Brockwell parkrun, finishing second.
Ella and Lily Newton also qualified for their borough team at the London Mini Marathon in April after running qualifying standard times at the Greenwich parkrun, Ella, 12, and Lily, 10, both ran 21.31, finishing 20th and 21st out of 134 runners.