Fly in and out of Colombo (the airport is actually in Negombo, about an hour north of Colombo).
The October 2018 Adventure will be launching from Jaffna, in the North of Sri Lanka. This is a 6 - 7 hour train journey away from Colombo. It will be finishing in Galle, on the South coast, which is a bus or taxi ride away from Colombo.
After this adventure, we will confirm whether we are sticking to these locations for future editions.