After pickup from your central Prague hotel, travel by air-conditioned vehicle to the start point on the city’s outskirts. Hop on a high-quality bike — or upgrade to an electric bike —here, don a cycle helmet, and then set off behind your guide.
Admire the views as you pedal along riverside paths. The 18-mile (30-kilometer) route is level, and over 97% consists of cycle paths away from traffic.
Cruise along the riverbanks, weaving through peaceful countryside and forests, and enjoy your first glimpses of Karlstejn, atop a wooded hill..
On route, take an optional river swim and refuel with refreshments (own expense) at a cafe or bakery.
Opt to take dirt tracks as shortcuts, and visit a secret viewpoint to gaze down over the castle. Admire the stunning scene — the castle enfolded in vast forests — just as Charles IV might have seen it in the 14th century.
Closer up, admire the Gothic courtyard and battlements, and choose to take an interior tour (additional cost). Then, join your guide for lunch and a beer at a local restaurant.
Afterward, leave your bike in Karlstejn, and take a 40-minute train ride back to Prague, ending your trip at the station.