As for carrying a map and compass. Shouldn't race organisers bear in mind that some runners can't actually navigate with a map and compass and therefore should be required to provide proof of competence in this area eg a certificate of participation on an FRA navigation course or Light Green colour standard at an orienteering event. Otherwise how will runners in need of assistance report their position using their mobile phones? Don't tell me that a satellite can actually lock on to a mobile. That's a bit like being tagged. Hey why not tag runners then they could be tracked like on route gadget?