Larriston Fells (summit)

The walk up Larriston Fells rewards you with views that stretch right across Northumberland's border country. It's a proper fell, not some manicured hillside - steep enough to get your heart going, with grass and heather underfoot that turns purple come late summer. The summit sits just inside England, looking out towards the Scottish hills, and on a clear day you can see for miles.

You're looking at a solid two to three hours round trip from the nearest parking, depending on which approach you take. The path itself is well-trodden but can be boggy in wet weather, so proper walking boots are non-negotiable. Families with young kids might find it a slog - this isn't a gentle incline - but teenagers who've done a bit of hiking will find it satisfying rather than punishing.

Near Hexham, you're properly positioned for fell walking, and if you're basing yourself at Kielder Campsite - just 3.6 miles away - you could knock this out in an afternoon and still be back for tea. The campsite gives you easy access to the whole area without needing to plan a big overnight expedition. Spring and early summer are the best times, before the midges get going in July. Winter's fine if you know what you're doing with navigation; autumn's lovely but the light fades fast. Free to walk, obviously. Bring water.