Your major concern will be insurance and collecting the entry fees to cover your costs, you will also need local government approval, police help, volunteers for marshalling, sponsors etc its a big task to organise anything like this!<br /><br />the best thing to do is talk to someone that already organises rides such as the Multiple Sclerosis foundation, they might be able to give you some help<br /><br />you might also want to talk to whoever organises road races in your area since the difference between a road race and a fun ride is minimal<br /><br />good luck!