Another Dutch guy here, living just south of Nijmegen and used to regularly ride between here and Zutphen where my girl lives. If it weren't for a ruptured battery I'd still be doing so. In the market for a "new" bike now.
There isn't much dirt around here, some interesting roads though. Like the "zevenheuvelenweg" (Seven Hills road)
It's steep and bendy, you might just be able to get your bike airborn on some of those climbs. Maybe I'll take a camera along for a ride on it some day.