You can get a mini coach straight through from Marmaris to Fethiye. Takes about 3 hours, air-conditioned bus. Leaves from Marmaris otogar straight through to Ortaca otogar, stop for a rest for 15 mins then onto to Fethiye. Fares have changed since we last used them, but from Koycegiz to Fethiye is was 7ytl & cost from Koycegiz to Marmaris was 6ytl.two years agp.
The only problem at the moment are road works from Marmaris, cos they are widening the road so may take a bit longer.