We will start from the final words:

We spent amazing holiday in Greece.

By recommendation of my friends we choose to visit Lefkada,Greece in middle of July. We used our vacation in active way. During the morning and sunrise we placed each day long run, approximately 10 km. After it we went to amazing beaches across whole island. Nature is amazing and color of water is as my girlfriend said radioactive blue. We were thinking what produce this color of the water and then we realized that white sand and waves makes it. There aren't long beaches where you can run for hours, instead of it we used main roads and hills for running. Basically you need to have trail running shoes for it. Each top of the hill brings amazing view on the sea and island, so we were motivated to run each day.
One sentence keep repeting in our mind: