Organisers of a Bangkok run have apologised after they miscalculated the distance of a half-marathon, forcing runners to cover several extra kilometres (miles) though the sweltering city. Participants wearing pedometers realised they had covered 27.6 kilometres (17 miles) instead of the standard 21.1 kilometres in Sunday’s early morning race. “Our staff mistakenly marked a U-turn onto the course which added around six kilometres to the route,” said Songkram Kraisonthi of co-organisers the National Jogging Association of Thailand (NJAT) and Amazing Field.–AFP