THE FACTS

Costs Around £5000 per person for a guided trip in a group. Independent travel is cheaper but requires much more organising.

How long you need 13-15 days but shorter tours are available.

Best bike to do it on US iron is best. You need a ‘bagger’ if you want to carry luggage.

Best time to go Spring or autumn have the best, most temperate weather.

Top tip Don’t bother speeding: cops are aggressive and gun-toting. It’s really not worth it…