After cycling to Phu Kham Cave and Blue Lagoon, we continued on the Western Loop (over 30 km) on our multi-speed Giant mountain bikes rented from Maylyn Guesthouse.
It took us less than 3 hours (closer to 2 hours without breaks) on pretty flat but bumpy dirt roads, through villages and farms with gorgeous mountains in the backdrop. Along the way, there are a few caves as well as local shops selling water and snacks.
It was a scenic ride but your bum and hands might hurt from the nonstop jiggling motion. Also, anytime any vehicle passes by, it will kick up a lot of dust for half a minute each time.
The route is pretty straight forward but Hobo Map is good to have.