Trails are travel's perfect pace: slow enough to notice, fast enough to cover ground. Find half-day strolls and month-long thru-hikes here, filterable by country, difficulty and the gear/permits you'll need before you go.
New boots ruin trips. Walk them 30+ km at home before your first big day.
Heavy packs end hikes early. Weigh everything, then leave a third behind.
Phones die, batteries freeze, signal vanishes. A paper map weighs nothing.
Things go wrong; a daylight buffer keeps small problems small.