Tipsy
If you can get yourself to Agios Stefanos (just south of Kassiopi) there's a fantastic walk to Agni. It's probably about six miles, but is easily broken down into stages of 1-2 miles with very pleasant stops at the end of each.
Take the road (the only one) from Ag Stef to Kerassia. It cuts through olive groves and past some very nice villas including the Rothschild estate. Kerassia is a beautiful (stoney) beach with a single taverna that looks rough and ready but is actually extremely nice. Distance approx 1.5 miles.
Then take the boarwalk along beach. At the end of the beach find the coastal path around the headland towards Kaloura. This is a fantasically scenic walk, although the path can be narrow as it's not too well used. Kaloura has a tiny horseshoe harbour that appears on many postcards and (again) a single taverna, where the only problem can be getting a table. Distance approx 2 miles
Then head off up the hill before descending into Kalami with Gerald Durrel's famous White House. Views on the descent are fantastic, and the road heading up isn't too steep. Plenty of places to take a break in Kalami. Distance approx 1 mile.
Then your off along the coastal path again towards Agni. The path can be difficult to follow as you leave Kalami but there are usually people around who'll point you in the right direction. This is a beautiful section, and leads you to what is arguably the loveliest bay on the island. Agni has three very high-quality tavernas that's made it a bit of a foodie's paradise. Approx Distance 2 miles.
Then there are three ways to get back to Ag Stef: A taxi - easily the most boring and expensive. Alternatively Agni Taverna and Taverna Nikolas both run boat transfers to Ag Stef which leve in the early evening (around 7pm, cost a couple of euros), but check they are still running in October. Otherwise just walk.
Enjoy
And is there a bus we could catch back to Sidari later in the day. If not does anyone know how much a taxi would be 
