Sports Tours International offers in China the great wall marathon, an extremely popular and difficult marathon along the stepped route of the wall. There is no other event in the world like this one, a difficult race along stone and step with many climbs.
@harvey_nuttall@TheRunningBee Thanks for the kind words Harvey, when you run these races in the future you'll be helping local communities become more active and fighting back against childhood obesity thanks to @TheRunningBee. Let you win? You know you love the challenge :)