SOBOs begin their thru hike by first summiting Mt. Katahdin. It is a big mountain and we were unprepared for what lay ahead that day.
So I have some advice esp for sobos. (by the time nobos get here they've pretty much seen and done it all, and know how long it will take to climb K.)
1. Bring plenty of water. 7 or 8 hours of climbing + 2 liters water = mistake
2. Bring plenty of food. The descent off Katahdin is almost as challenging as the ascent. The progress is slow and you really don't want to lose your energy halfway down the Abol or Hunt trail.
3. Give yourself PLENTY of time. Be waiting at the park gates when they open in the morning. Give yourself as much time as possible.
4. Bring deet. The black flies are going to be coming at you full force. It will make the first few miles of your assent much more comfortable.
6. Take plenty of pictures and enjoy the view. It's amazing!