Last summer, I went to Okinawa to cycle aronud the island. This plan was started in this May when I cosidered what should I do on the summer vacation. The length of the vacation was 5 days. I wanted to travel by bicycle and Okinawa was where I haven't visited for long term. Okinawa is also famous for beautiful sea and circuit distance along the coast is 500km.I thought it seemed cycling 500km within 5 or 4 days was reasonable and also swimming in beautiful sea was atrractive.

So I reserved the flight ticket for round trip to Okinawa departing July in May.