parkrun LonDone+ and LonDone ++

“LonDone” is the name for completing the full set of 65 parkrun events in Greater London. There’s 2 other terms: “LonDone +” and “LonDone ++” that have been widely debated in the various parkrun social media forums.

• LonDone + is generally seen as being all parkrun events within the M25. There are currently 14 parkrun events that are within the M25 but outside of Greater London or a total of 79 events within the M25.

• Up to now I’ve ignored LonDone ++ as a lot of the definitions have felt a bit arbitrary. However, one definition that I like is that it includes events that are outside of the M25 but have a Voronoi area that crosses inside the M25. This includes a further 10 parkrun events making a total of 89 events that have part of their Voronoi area within the M25. Note that different parkrun apps have slightly different calculations for their Voronoi apps. For this page I’ve used the Voronoi map from the Running Challenges Chrome Extension. The 5k app shows the Voronoi area for Thurrock as being completely outside of the M25, so would only count 9 rather than 10 LonDone ++ events.

See the main LonDone page for details of all parkrun events within Greater London.

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LonDone +: parkrun events within the M25

Event (County, Region)

• Aldenham (Hertfordshire, East of England)

• Banstead Woods (Surrey, South East England)

• Brooklands (Surrey, South East England)

• Cassiobury (Hertfordshire, East of England)

• Dartford (Kent, South East England)

• Dartford Heath (Kent, South East England)

• Gunpowder (Essex, East of England)

• Hazelwood (Surrey, Middlesex, South East England)

• Leavesden Country (Hertfordshire, East of England)

• Nonsuch (Surrey, South East England)

• Rickmansworth (Hertfordshire, East of England)

• Roding Valley (Essex, East of England)

• South Oxhey (Hertfordshire, East of England)

• Swanley (Kent, South East England)

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LonDone ++: parkrun events with a Voronoi area crossing the M25

Event (County, Region)

• Black Park (Buckinghamshire, South East England)

• Brentwood (Essex, East of England)

• Homewood (Surrey, South East England)

• Jersey Farm (Hertfordshire, East of England)

• Lullingstone (Kent, South East England)

• Mole Valley (Surrey, South East England)

• Reigate Priory (Surrey, South East England)

• Squerryes Winery (Kent, South East England)

• St Albans (Hertfordshire, East of England)

• Thurrock (Essex, East of England)*

*The 5k app shows the Voronoi area for Thurrock as being completely outside of the M25, so would only count 9 rather than 10 LonDone ++ events.

Maps below: red line shows the M25, blue polygon shows the Voronoi area of the parkrun.

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More parkrun posts

parkruns are free, weekly, community 5k events all around the world. I started in December 2012 and have been obsessive about it ever since. See my parkrun Collection page for details.

Featured and popular parkrun posts:

• Middlesex parkrun and the Eel Pie Pilgrimage

• Completing all parkruns in South-East England

• parkrun Compass Club

• parkrun Alphabet Challenge

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