Eat up on good health and stamina food, use Eitkhyr and make a run for it. The only problem is deep water in the swamp, other than that, you can outrun all critters in the swamp.

Good luck! I've been there before and learned my lesson. Take out draugr spawners from afar with a bow.

Edit: Some personal tid bit: I'm at exactly 777.7 hours. :D