How long can I keep a sandwich in my rucksack before it goes bad?

Four hours maximum once it warms to 8°C or above, or just two hours in extreme heat. The clock starts when your food reaches 8°C, not when you leave the fridge—so if your cool bag is actually keeping things cold, you've got more time.

What foods are safe to pack for hiking without refrigeration?

Whole fruit, bread, crackers, nuts, dried fruit, and unopened shelf-stable foods are all safe without cooling. These items won't spoil in your rucksack and don't require ice packs or worrying about temperature.

Do I really need to use hand sanitiser before eating lunch on a hike?

Yes, absolutely. Your hands touch gates, stiles, trekking poles, and all sorts of surfaces during a walk, then go straight to your mouth when you eat. Hand sanitiser or wipes prevent gastrointestinal illness when soap and water aren't available.

Food for the Fells

Keeping Your Packed Lunch Alive on the Mountain

A hillside picnic isn’t just a long lunch—it’s an extended tour without refrigeration for foods that normally live in the cold. Official guidance treats outdoor eating rather seriously, insisting that anything fridge-bound at home needs ice packs or frozen gel to survive the summit, while basic hand hygiene remains as important as it would be in your kitchen.

17 September 20267 min read