Cycling -- The Sidemen valley offers some of the best cycling in Bali as the roads are not as busy as others. Most hotels in the area offer free use of their mountain bikes; otherwise trips can be organized through specialist tour agents which include hire of bike and helmets, refreshments, lunch, and insurance.
A good cycling trip begins in the heart of snake fruit country, Selat, and takes you through Iseh, a small mountain village down to Sidemen. You will cycle through valleys of uninterrupted rice terrace views, see plantations bearing a variety of crops, pass fighting cocks in baskets, and experience the daily life of the Balinese. The trip is mostly downhill and should take about 2 hours.
Trekking -- Most tour operators from the south can arrange a half- or full-day trek through the Sidemen valley. If you are staying in the area, your hotel will help you with hiring a local guide; expect to pay about Rp25,000 to Rp35,000 an hour.
Some well-trodden footpaths meander through the rice fields. With plenty of intoxicating views, crags and rivers to cross, and a smattering of temples, this is a rambler's paradise. With or without a guide, you are never too far from a road so don't worry about getting lost. Besides, you might stumble on a small village where most Balinese will welcome you with open arms and point you in the right direction.
White Water Rafting -- An exhilarating outing on the Telega Waja river begins in Muncan and takes you through 14km (9 miles) of terraced rice fields, lush tropical jungle, cascading waterfalls, and steep canyons of clean, natural spring water. Classified as a class IV river (class III being the easiest), this adventure is suitable for kids as young as 6. Book through Sobek (tel. 0361287059 Ubud, 0361768050 Kuta; www.balisobek.com; adult US$79, children ages 7 -- 15 US$52; includes transfers, refreshments, lunch, and insurance).