Today I've read an article about the Fimmvörðuháls trekking route in a magazine. As I'm planning a trip to iceland, without dates yet, I need some information I haven't found in Internet and maybe you could give if you have been there.
My doubts are how to arrive to the start point, how to move from the arrival point to the start point (for instance if we come by our own vehicle) and how many days we need to complete the 20 km trekking (in normal conditions, in Spain for instance, it will be only one day walking, but I suppose that if you add wind, snow, ice, a lot of panoramic views that make you stop to take a photo, etc. it will delay the trekking). If I have to spend a night there, is there any place to sleep or should I take sleeping bag, tent, etc?