sounds like fun! you already have two of my favorites planned. Other good snacks are sunflower and pumpkin seeds.

I have no great suggestions for lunch, but a fact to add...mayo from a jar is often mistakenly thought to go bad if not refrigerated; what I heard on Food TV is that this is not true--instead, because of the acidity, it actually preserves the other foods it is in contact with! (what you learn from food tv, eh?)

ham mayo roll-ups with celery and raw turnip slices? hmmm. I hope someone else is more creative than I today!

since you're on SP, you could have a tortilla or something like that...and since you're hiking 8 miles, a bit more than your 15 carbs, right? (I'm only partway through the book, so I'm sorry if I'm wrong about that)