"NH17 Panvel - Pen - Mahad - Poladpur - Khed - Asurde - Chiplun - Savarde - Sangameshwar - Hathkambe(Ratnagiri) - Pali - Lanja - Rajapur - Kharepatan - Kankavali - Kudal - Sawantwadi up to Goa border."
Done this stretch on Feb 1st & 2nd (2012). Found the roads to be in good condition. The stretch as you enter Goa is pure off road for a kilometer or so on account of road widening. But otherwise it is a beautiful stretch.