Some years back, my sister planed a trip through the Croatian coast, starting in Italy, ending on Hvar. She wanted to fly in to Italy, purchase a bike there and then head to Croatia by coast. She had 14 days of vacation - the first week should have been biking, the other one relaxing on Hvar.
(photo: http://www.hzpp.hr)
Anyway, if you find yourself travelling with a bike through Croatia these days, according to the www.h-alter.org website there is a special promotion going on until Tuesday (September 22, 2015) at the Croatian Railways:
"During the European mobility week (September 16 - 22, 2015) Croatian Railways offers all passengers with bicycles a ticket with a 50% discount within the internal transport for all trains, which are able to transport bicycles. The ticket for the bicycle itself will be free of charge this week!!"
So, travel for half the price and take the bicycle for free until Tuesday. Check out which trains can transport bicycles here.