If you're talking about a normal British public footpath then the answer is there is no age limit because it is illegal to ride a bike on a footpath. You may only push it!
yes
no you can not ride it legally
Laws regarding riding unregistered bikes on footpaths vary depending on the specific jurisdiction. In some places, it is legal to ride an unregistered bike on a footpath as long as you are considerate of pedestrians. However, in many areas, it is illegal to ride any type of bike, registered or unregistered, on a footpath. It is important to consult local laws to determine the specific regulations in your area.
It is legal to push a motorcycle along a footpath provided that you are standing beside the bike and not straddling it.
85 years old
Because altough people under 18 have physical ability to drive a car or bike they will not have the necessary mental attention and social attention.
You can lean it to your side, step over the bike, pull the bike up from under you, and get on!:)
this would depend greatly on how old it is and if it supercross bike or trail bike...the supercross bike are liquid and trail are air cooled...a trail bike prolly 50-70 and a super cross bike 60-90 MPH assuming its under 10-15 years old
Is a dirt bike covered under homeowner personal property?
The actual riding isn't any more dangerous, but if you fall on a road you might get run over by a car, which wouldn't happen if you fell on a footpath. Regardless of where you ride, bicycling is generally speaking a very safe activity.
no you can only use the bike above ground
it might say it under the bike