Today's Bike Ride

[Graham Breeze]

Perhaps as i age i might need to resort back to cross-training in future years for preservation.

Probably.

You get good at running by running but that is progressively damaging vulnerable bits of your body.

My knee surgeon told me that all fell runners eventually destroy their knees - it is the consequence of a lot of running fast on hard surfaces down hills, which is not what your body is designed for.

But eg cycling can maintain a good cardiovascular system without wrecking your knees and when you no longer have the body of a spring lamb it can play a part in keeping you running. If that is what you want to do, although some might think cycling is a lot more enjoyable.