Japan will be hosting the 2008 G8 Summit in Hokkaido from July 7th to July 9th. Contact the webmaster If you are organising a bike ride to Hokkaido and want a link from here.
For people in the UK who don't fancy cycling to Japan, Japanese anti-G8 organisers have proposed July 5th as the international day of action. Activists in London are planning a day of action in Croydon (home of the UK Border Agency) provisionally called the London Fete Against the G8 for freedom of movement, the freedom to protest and equal rights for all. There is talk of a mass cycle ride from London to Croydon, feeding into a Croydon "Critical Mass".