We suggest that you come to Kerkini by car, although you can use bus and train too...

From Thessaloniki ( Thessaloniki airport - SKG) you must follow the National Road towards Serres / Boulgaria - Sofia, and after about 80kms you must turn left, following the signs to Lake Kerkini.
It will take you about 50 minutes (from Thessaloniki) to meet the Lake and then another 20 to arrive at the village Kerkini, through a very pleasant route next to the Lake bank.