good call, hitch hiking is a death sentence. alot better to just hoof it or ride yer bike. remember to only travel at night that way nobody will see you and yer chances of being spotted by a murderer are decreased.
do you have any gear? you do know that its currently winter and from the way you worded this post im going to assume you have zero experience walking or biking long distance? but to answer yer question of how do you bike from little rock to any of those places, um you get on yer bike and you ride in the general direction of which ever place you want to go.
you might want to consider saving up some money for a bus or plane ticket.