Marathon is an awesome skill game on www.flash-games.net in which you have to help your character to run. There will be many different characters for you to choose, such as mouse, cat, snowman and tortoise with an oxygen tank on his back. Try to run as fast as you can until you get to the red tiles. Stop on the red area otherwise you will lose. All you have to do is to alternate the right and left keys to make your character run. The faster you press the keys, the faster your character will go. Go ahead and help your hero score maximum points. Good luck and have fun!