Jump on a mountain bike for healthy off-road holiday exercise, or maybe a road bike for more well travelled, sealed paths.
Cambodia
The awesome ancient temples of Angkor are scattered over the landscape just outside the Cambodian town of Siem Reap. Enjoy cycling around the main complexes before heading through lush rice paddy scenery to beautiful outlying temples like Banteay Srei. With a fairly flat landscape, one can easily head onto peaceful rural roads and meet friendly Cambodian people in the villages you pass.
AustraliaSuch a huge country is hard to sum up in a few sentences! City bike tours taking in Sydney and Melbourne's famous landmarks are a healthy and fun way to do your sightseeing. For those wanting to see "the outback" plenty of rural roads and national parks will ensure there's no shortage of trips to undertake. Distances in Australia can be huge, so maybe pick an area and start planning. Tasmania's pleasantly mild climate in the hotter summer months is an advantage for biking at that time of year.
The NetherlandsThe Netherlands was made for cycling. A flat landscape, a strong local cycling culture and manageable distances made this country a dream cycling destination. Whether it's Amsterdam, The Hague, or the Dutch countryside, replete with windmills and quaint pastures, you will find The Netherlands fits the bill.
FranceEmulating Tour de France heroics is one option. Leisurely rides around Bordeaux and enjoying a little wine tasting is another. With literally thousands of wine growers, one is never going to experience them all! Local trains can get you to smaller regions within Bordeaux, from where one can often rent a sturdy bicycle to explore the local region.
DenmarkEnjoy some fresh, crisp Scandinavian air as you make your way around this cycle friendly and conveniently compact country. The Cycling Denmark organisation was established to assist the visitor with useful cycling information, maps, routes, bike tool kits, luggage forwarding and other cycling related services. As for the actual landscapes, Denmark offers quite a range, from tranquil nature trails to pretty coastlines. The gently undulating countryside allows all levels of cyclists to participate.
IndonesiaSamosir Island sits in Lake Toba, both created by an eruption of a huge volcano, scores of thousands of years ago. This Northern Sumatran inland island is a scenic and peaceful destination. One small peninsula contains most of the tourist accommodation. Despite this, it's a fairly sleepy place, and gets even sleepier as one heads further afield. At least half the island is paved, and one can enjoy the beautiful lake views and breezes as one follows the waterside circuit around the island.
South AfricaThrill seekers can enjoy downhill mountain bike fun on Cape Town's iconic Table Mountain. Nearby Stellenbosch offers wineries with your scenery. Also in the cape, beautiful trails along the Garden Route are another cycling option.
Riding on bmx bikes is great for bush trails with jumps if the overall terrain is fairly flat. Otherwise try a mountain bike for help in getting up hills.