What is the biggest trouble that i can get into for jumping a train in ohio?

Answer 1

Are you talking about jumping a ride on a freight train?
Well, the worst trouble can be that you end up dead, and yes, it is a very real possibility.
You could also end up badly injured, including the loss of limb/s.

Supposing you managed to get on the train safely AND safely make it to your destination, the railroad does have their own police dept. and they do monitor freight trains for stowaways. You could be arrested and fined for trespassing.

Tis up to you whether it;s worth the risk or not.