[cameronh90]

Maybe there's some misunderstanding about what I mean by cruising speed.

I mean it in the sense of the speed I pick when the road is clear ahead of me. Analogous to the cruising speed in an aeroplane, which is usually quite close to its max speed, but not quite.

I can sprint fast for short bursts, but 30km/h is for me comfortable to maintain indefinitely. My heart rate will be around 160 vs my resting of 45, max of 200 and 120 when walking.

[stefs]

ok sorry, in that case i misinterpreted you. i thought you meant you were able to keep up 30km/h averages "cruising" point-to-point through london, which, imo, would be a challenging feat for alleycat racers.