can be hired in most towns and villages, just ask around; the
quality varies but there are some reasonable machines out there.
If you are staying long term there are several shops in Koh Samui
that stock authentic bikes and they can usually be sold on before
you go home. Prices range between Bt80 to Bt120 per day (prices
are negotiable on monthly rentals).
from Ban Khai to Thongsala and on to Haad Yao, the island is predominantly
hilly, thus be prepared for a work out if you cycle elsewhere.
Always remember take plenty of water, head wear (helmet advised
- the hills give you a lot of speed) and sun-cream.
are no offical tracks, though that can only be a matter of time,
but any non-concrete road in the hilly areas is a good ride, especially
the Thong Nai Pan and Than Sadet roads. Otherwise there are loads
of trails to discover, just get those wheels rolling. For easier
riding stick around the Thongsala area; a good ride would be up
to Phaeng Waterfall where you can also see the Jade Buddha and
then across to Srithanu and Laem Son Lake, before heading back
along the coastal road.