Support us Events and ideas Challenge events London Marathon 2022 Apply for a ballot place today! The World famous race is a once in a life-time experience and with places limited this year, this is an opportunity not to be missed. Support Dogs has five coveted places in the 2020 London Marathon. This is an amazing opportunity to take part in this world-famous race along with 40,000 other runners. This iconic race takes in all of the sights of London and is a real 'must do' for runners and non-runners a-like. Cheered on by the best supporters in the world, it will be an experience like no other.