Rent a bike directly at the train station you arrive at, with the possibility of returning it to another station. All you need are two forms of photo ID, then hand over 1,000Kč deposit, pay the daily rental of 130-230Kč and peddle off into the sunset. Opening hours do tend to vary so be sure to call ahead. Available only until 31 Oct.

Rental stations:
South Bohemia - Tábor (tel. 972 55 29 16), Veselí nad Lužnicí (tel. 972 55 21 33), Jindřichův Hradec (tel. 972 55 23 91), Třeboň (tel. 972 55 26 54), České Velenice (tel. 972 54 57 44).
Český ráj – Turnov (tel. 972 36 62 00), Tanvald (tel. 972 36 43 56), Jičín (tel. 972 34 44 83).
East Bohemia - Česká Skalice (tel. 972 34 30 63).
Moravskoslezské Beskydy - Frenštát pod Radhoštěm (tel. 972 75 24 67, Ostravice (tel. 972 75 24 67).
Litovelské Pomoraví – Olomouc (tel. 972 74 04 36), Litovel (tel. 972 74 04 36).
Polabí-Nymbursko - Lysá nad Labem (tel. 972 25 58 68).