Hello. My name is Kaori. I was given over MTB from a friend. I never knew biking is such fun. I'm looking for people to ride around Tokyo together. I'm a beginner. I'm 32 year old female. Hope to hear from you!
Half-Fast Cycling organizes regular beginners' rides starting in Roppongi Hills. Sign up for our e-mail list to get notifications. (I sometimes post them here, but sometimes forget - e-mail is the surest way.)
Depending on your fitness level, there are a number of options. Nearly every weekend I do big rides out to the mountains and back. Those rides are rather demanding. When I have less time and/or energy, I stay closer to Tokyo by doing some sort of Arakawa loop.
What are you riding? When can you usually ride? What kind of distance and pace are you comfortable with?
Also, as Mike pointed out, he and the Half-Fast group have a lot of organized rides from very beginner on up. Mike and HF are a couple of great resources!