Damavand (5609m) is the highest peak in Iran.  It is a classic stratovolcano.  Summitpost has good information.  Damavand can be climbed from the North, North-east, West or South, but the southern route seems to be the most popular.  The route begins at Güsfandsara Shelter, at around 3000m at the end of a driveable dirt road.

The Greensand Way follows the Greensand Ridge through Kent and Surrey in in the UK. Details here: https://en.wikipedia.org/wiki/Greensand_Way. It is 108 miles long with equal distance in Kent and Surrey, and is reasonably well marked with a few OS map and signage errors on the way.

This is a traverse of the central spine of the Sangre de Cristo range, from Lake Como to Methodist Mountain. The route comes in at 103 miles, with approximately 53,000' of vert and some 77 peaks along the way. The goal is to stay true to the ridge for as much of the route as feasible.

Some stats:

14ers: 5
13ers: 33
12ers: 18
11ers: 17
10ers: 4
Total peaks: 77

Total Miles: 103
Established Trail Miles: 9
Established Route Miles: 6
Off Trail Miles: 88
Vertical Gain: 53,000'