In the not to distant future, I notch up another years worth of life, and today I had a small brainwave which could work for most keen cyclists.
The challenge, to ride n kilometres on your birthday, where n=100-Your Age. So my next birthday I am 46, so the challenge is to ride 54kms on my birthday!
Obviously, each year will get slightly easier. If i can manage 10kms when I am 90, i will be a happy old man.