Can anyone help with a twelve day itinerary taking in the main highlights? We're off to Iran in Feb or March. Which would be the best route to take without taking any internal flights?

In case you do not want to take a flight, you'd better take it in this order so that you can have a break in each city. Day 1 Tehran Day 2 Tehran Day 3 Yazd by train Day 4 Yazd Day 5 Yazd Day 6 Shiraz by morning bus Day 7 Shiraz - Persepolis Day 8 Shiraz overnight bus Day 9 Isfahan Day 10 Isfahan Day 11 Isfahan Day 12 Abyaneh and Kashan - back toTehran in the afternoon or next morning