How long are you going to be out Adan?
Here's an ultra running concoction I'm working on, tried it once and it tasted fine:
Cooked sweet potatoes mashed up with a little coconut butter, sea salt (*very little, to taste) cinnamon, vanilla, touch of honey for added sweetness, and diced pecans. Throw it in a baggie and munch on it between meals. This should keep fine for a day or two.
If you're going the store bought route, Pro Bars are hard to beat for quality, but the steep price will blind you. Chock full of complex carbs, simple sugars, protein, etc...
Pack an avocado or two for the evening or for a twist on breakfast. Spread it on some quality crackers or crusty bread.
These aren't super light options, but whatever....