My problem with training for such a short distance (that doesn't sound right) is that I would not be warm before I started training. It takes me 5 miles before I can let loose with and form of high energy usage. So I would have to go for say a twenty mile ride- do 5 miles and then do interval training for say 10 and then start cooling down for the next 5.
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How long was I in the army? Five foot seven.
Spike Milligan