Route 13 is a continuation of the sea routes on the southeastern side of Kanto. It connects Route 12 in the northeast with Route 14 in the southwest. From the east side of the route there are two Trainers.
Defeat Lola to receive P2,220 and 3 Poke Balls. Walk around the fences to a small tree. This can be cut down with your partner Pokemon’s secret technique chop down. On the other side is the only patch of tall grass in the entire route. A Trainer will be blocking the path, however.
Defeat Gwen to receive P740 and 2 Great Balls. Search the dead end to the west to discover a hidden berry.
Follow the path all the way southwest to a dead end. Like before, search the dead end to discover some hidden berries. Unfortunately, you won’t be able to reach the exit from here. Walk to the north side of the route and travel west. A few more Trainers can be battled along the way.
Defeat Perry to receive P740 and 2 Great Balls. A Full Heal can be grabbed behind Perry. If you follow this path west, it will lead you to Route 14. Take the path to the southwest to battle what we used to call Rockers.