The London Marathon Charitable Trust has handed out almost £2.1m in grants.
The grants, which have been awarded to organisations across London, Surrey and Buckinghamshire, include more than £841,000 that has been given to two Royal Parks programmes in Regents Park and Greenwich.
The initiatives, one for the Gloucester Gate Playground in Regent’s Park, the other the Greenwich Park Playground, will include the charity London Play, local schools and other partner organisations, the Royal Parks confirmed.
Loyd Grossman, chairman of the Royal Parks charity, said: "We are absolutely delighted to receive these grants, which will allow us to transform play opportunities for children in two of London’s best-loved parks.
"The benefits of outdoor play and connecting with nature are significant, in particular for those young people who might have limited access to green space."
Other recipients of the grants are based in Dagenham, Haringey, Surrey Heath, Aylesbury Vale, Sutton, Westminster, Tower Hamlets, Bexley, Richmond, Lambeth, Redbridge, Wandsworth and Morden.
The London Marathon Charitable Trust has awarded more than £70m to more than 1,200 organisations in south-east England and London since 1981.
This year’s London Marathon raised more than £45m for good causes.
The next deadline for the charity's small capital grants and major capital grants programmes is 17 October.