That's a great idea, thanks! We could take our bikes down on the train, I think, too. I think there are bikeable trails in the park
Of course you can take bikes... last year my friends and I were biking there - biking through Roztocze was the main reason why we went there :) There are trains with special place for bikes - just take a look at rozklad.pkp.pl/bin/query.exe/en? (select an option: carriage of bicycles required).
084 506 020 421 (phone)
omg... it's a cell phone number, so without 084, just 506 020 421
I think there are bikeable trails in the park.
Yes, there are great places for biking, but you should get some map. I'm not sure if there are some publications about biking through Roztocze in English, but you can always improvise :)