We did a very lovely tour with Grashoppers last Sunday through the countryside south of Siem Reap. Its starts early at 7.30, Bikes, Helmets and Water is provided, and so is a very helpful, friendly and competent guide. It's a 25 km ride, all flat, but through some bumpy dirt roads, so you need a bit of strength to keep your balance sometimes. We made quite a few stops at a pig farm, a rice mill, a local market and a temple. Around noon we came back. I can only highly recommend this tour.