Organisers of the Bushy Park parkrun expect a massive turnout for Saturday’s sixth anniversary run.

They are advising runners to arrive early and to be on the start line by 8.45am for the 9am start.

There were more than 800 finishers in last year’s fifth birthday event which was won by Hampton-based international Mike Skinner.

The Bushy Park 5km time trial, as it was then called, launched the parkrun series with just 13 runners in the inaugural race in October 2004.

Events followed at Wimbledon Common in January 2007 and Banstead Woods five months later.

There are now 49 parkruns each weekend across the UK as well as one in Denmark.

Stragglers’ James Flood won last Saturday’s Bushy Park race, leading a field of 650 runners in a personal best time of 16 minutes 35 seconds.

That knocked 35 seconds off his previous course best set last October.

Ranelagh Harriers’ Estelle Damant, competing in the event for the first time, was first woman (17:47), the top age-graded effort of the day.

Belgrave’s Richard Ward warmed up for the South of England road relay championships by winning the Roundshaw Downs parkrun in 16 minutes 42 seconds.

Although he was 18 seconds outside his best time for the event he maintained his unbeaten record on Roundshaw Downs, where he has now won 11 times.

Sutton & District teenager Monica Isaacs took 20 seconds off her previous best in winning the women’s race (20:39).

Stragglers’ Roy Reeder who also ran at Aldershot on Sunday, took the Kingston event in 18:35, beating clubmate Trevor Savage by three seconds.

Aldershot’s James Savage won the Wimbledon Common race in a personal best 16:23 from Oxford City’s Ed Mezzetti (17:41) and Hercules Wimbledon’s David Grima (18:06). Hercules’ Hannah Fernando (20:53) was the women’s winner for the second time in 12 attempts.

The first four finishers in Richmond Park clocked personal best times.

Unattached Alexie Calvert-Ansari (18:10) and Stuart Ferguson (18:35) beat Stragglers’ Laurence Duffy (18:38) and Ranelagh’s Ted Mockett (18:48). St Mary’s Richmond’s Kate Brown (19:29) won the women’s race.

Birmingham University’s James Whistler (18:45) and Thames Turbo’s Becky Thurtell (24:36) won in Old Deer Park.