Run the Royal Parks Half Marathon as part of our #WishHero team and together, we will create life-changing wishes for children with critical illnesses! About the Event See London at its leafiest on this picturesque Half Marathon. You'll be joined by 12,800 other runners on the 13.1 mile route, heading past Buckingham Palace, the London Eye, the Houses of Parliament and Royal Albert Hall. And why not bring the family along? There will be a wide range of fun sporting activities and arts & crafts, as well as a scrumptious farmers market, big screen entertainment and live music – plus loads of giveaways!