from the website
http://www.cyprus-travel-secrets.com/troodos-walks.html
"It's a 12km circular walk around Mount Olympus starting from Troodos Square and the maximum elevation change is only 50m. Walking or biking at a height of 1700-1750m is pure pleasure as you negotiate rocky tracks among the dense forest of Pinus Nigra and Juniper Pheonicia.
http://www.cyprus-travel-secrets.com/troodos-walks.html
"It's a 12km circular walk around Mount Olympus starting from Troodos Square and the maximum elevation change is only 50m. Walking or biking at a height of 1700-1750m is pure pleasure as you negotiate rocky tracks among the dense forest of Pinus Nigra and Juniper Pheonicia.
Views of the entire island (including the North on a clear day) are simply spectacular and half-way round you will see the entrance to a disused chromium mine which ceased operations in 1982.
Allow 4-5 hours for this walk which, though only 12km long , can be tiring for people who have never walked at altitude before."
I only went halfway, because I am not very fit and it is indeed tiring.