You can reach Turku by train. Check the connection here.
Vr.fi

The plan is to leave 19th in the morning from the center of Turku.

Because we are leaving in the morning maybe we also have to organize the accomodation in Turku for all the people coming from other places. We could have a small party the night before leaving.

 

You can reach Turku from Stockholm by taking the boat (viking line for example). We will give you more details.