From Sat Restaurant (approx) to 1053 Sokak (just past Letoon Hotel) one-way is around 1.5km
Play around with your actual start and finish points:
http://www.freemaptools.com/measure-distance.htmSearch for Fethiye, zoom in and click on the map once for starting point, and again for finish. The prom is pleasingly almost a straight line.
Surely the heat is a killer? I'm worried because it looks like it will 40 C next week which is a bit too much for me, and I don't run anywhere!