Sesi (ΣΕΣΙ)

Coming via National road (Ethniki odos):

Get on the National Road heading North towards Lamia.
Take the exit AFTER Varimbobi (signposted Aghios Stefanos).
Continue on this road for 1.3km.
Look carefully - you will go over a railway line.
Just after you cross the railway line turn left.
You are now on the road to Aghios Stefanos and Marathon lake
Follow directions as below

Coming from Athens Centre:

Go up Kifissia Avenue and through Kifissia
Continue 3km or so and pass through Nea Erithrea
Continue for another 5km or so.
You will see signs directing you right to Nea Makri.
Keep straight on and continue for another few Km to Anoixi
You will pass a Sklavenites Supermarket on your left.
1 km or after this you will pass an EP or SHELL (?) petrol station on your left.
500 metres after the petrol station you turn RIGHT (Signposted for Marathon Lake). 
This road takes you to Aghios Stefanos and then onto Marathon Lake.

Cross the Marathon lake marble dam and after 1 km there is a signpost for Gramatiko – Sesi - turn left here.

Follow this road for 5 km, arrive in Gramatiko village.
Before the square (plateia) of the village turn left in a narrow road and after >50m turn right (this is not the first turn right).  
Keep driving in this uphill road for 700m, when you see a signpost for Sesi (ΣΕΣΙ) turn left.

Keep on this road for about 7km.

The end of this road will be the meeting point next to the beach.

After Marathon Lake you need about 20minutes

GPS Coordinates:
38 14 46.50  N
23 59 55.40  E