Our group did the Baltic in May 2005, routes as follows;
EGTO-DET-COA-RKN-EDDW
EDDW-FLD-EPSC
EPSC-SUW-VABER-EYKA
EYKA-EVRA
EVRA-LIE-TIGNU-POL-RANOK-EPGD
EPGD-KRT-FLD-ETNL
ETNL-LUB-LBE-EDWI
EDWI-EMD-LWD-EHTX
EHTX-DET-EGTO
Memorable events, thermals over large forests even above 3000', charges at Kaunas, flying VFR over Russian Federation, brillent trip. Hope this helps, best of luck