I am attending a wedding in Poland in september. Afterwards I have just over two weeks to make my way back to Amsterdam to get the ferry home.
The only fixed part of the plan is to visit a mate in Geneva at the end.
Looking for places to stop off for a few days between Krakow and Geneva, primarily for hiking and biking as will have an infant in the party, but bouldering and low grade single pitch sports will be an option too.
Visit Dresden and the Elbsandstein area, beautiful area. (climbing on sandstone is a ethic-load issue though). Then, if you drive south do some climbing in the Frankenjura, sport climbing heaven...