Does trail mix expire? The nuts in trail mix can go rancid and make the trail mix go bad. Rancid nuts will have a bad taste or odor and can potentially upset your stomach. This will happen around 6 months after the best by date on the package.

How long will trail mix last?

Trail Mix Storage Suggestions

Store trail mix in an airtight container or reusable zip top bag in the pantry. How long does homemade trail mix last? We recommend storing trail mix for about one month. Nuts might start to go rancid after that point.

Do Mixed Nuts expire?

A heart-healthy snack, bulk nuts can become rancid quickly if not stored correctly. Especially when exposed to heat because of their high fat content. Once the oils in nuts go bad and they become rancid, there's no fixing them. ... If stored correctly, nuts can last for up to a year.