Most pee wee Motocross classes have an age restriction of 4 through 9 or 10. It is not so much a question of age but how comfortable the youngster is on a motorcycle.
Motorcross is competed in, all around the world, at various motorcross tracks
300cc
Motorcross is popular EVERYWHERE but mostly i would say America and the UK
Well, you don't 'play' motorcross! You ride it, and you do this at any outdoor or indoor tracks.
Probably motorcross because if a 3 year old child can cycle then that's enough proof for that.
In the 1800s
no
British
well it depends on who but football players at an average do make more $ than motorcross bikers.
out of boredom, something different to do.
falling down and death
about 70mph