Trekkers and mountaineers are typically physically prepared to walk for longer periods, jumping boulders, crossing streams, and traversing snow. If you’re not one of them, however, you’ll need to be physically fit for trekking to the K-2 base camp, Masherbrum base camp, Snow Lake, or Biafo glacier. The terrain is always rugged, with loose rocks, hills, exposed sides, and stream crossings, and the routes do not always follow trails. However, in each valley in northern Pakistan, you can often find easier treks near major attractions.