A trek is not a long hike. It is days of walking back to back, with a pack, a hardest day somewhere inside it and a descent that arrives tired. These guides are built for that: a 16-week plan for each of twenty famous treks, and the physiology that decides how the weeks on the trail go.
Every plan starts from the trek's real stage profile: its days, ascent, descent, hours and longest day, from our canonical trek database. The weekend long walk grows toward that longest day, the Sunday walk makes the pair, and the taper lands you at the start fresh. The three science guides explain why: how to train the descent, what altitude does and what your itinerary does about it, and why most of the training happens in Zone 2.
Each trek also has its own page with the stage table, day by day: Kilimanjaro, Everest Base Camp, the Inca Trail, the Tour du Mont Blanc, the Annapurna Circuit, the Walker's Haute Route, the Alta Via 1, the Tour of Monte Rosa, the GR20, the Laugavegur Trail, the Toubkal Circuit, the Huayhuash Circuit, the Santa Cruz Trek, the Salkantay Trek, the Condor Trek, the Quilotoa Loop, the Inca Trail to Ingapirca, the Torres del Paine W Trek, the Torres del Paine O Circuit and the Michinoku Coastal Trail. If you want the plan built around your own date and your own week, see how the trekking plan works.

Not technical, still one of the hardest single days in mainstream trekking. Summit night hour by hour, which route is hardest, Kilimanjaro vs Everest Base Camp, and how to train for it.

Length, straps, technique for the climb and the descent, and what the research says poles do for your knees on a long way down.

7 days, 62 km, high point 5,895 m. The weekend pair, midweek vertical, a rehearsal of the 10 to 14 hour longest day and a two-week taper, week by week.

11 days, 113 km, high point 5,545 m. The weekend pair, midweek vertical, a rehearsal of the 8 to 9 hour longest day and a two-week taper, week by week.

4 days, 45 km, high point 4,215 m. The weekend pair, midweek vertical, a rehearsal of the 8 to 10 hour longest day and a two-week taper, week by week.

11 stages, 170 km, high point 2,532 m. The weekend pair, midweek vertical, a rehearsal of the 7.5 to 8.4 hour longest day and a two-week taper, week by week.

8 days, 86 km, high point 5,416 m. The weekend pair, midweek vertical, a rehearsal of the 8 to 10 hour longest day and a two-week taper, week by week.

14 stages, 206 km, high point 2,987 m. The weekend pair, midweek vertical, a rehearsal of the 7 to 8 hour longest day and a two-week taper, week by week.

11 stages, 114 km, high point 2,752 m. The weekend pair, midweek vertical, a rehearsal of the 5.5 hour longest day and a two-week taper, week by week.

9 stages, 172 km, high point 3,317 m. The weekend pair, midweek vertical, a rehearsal of the 8 to 8.5 hour longest day and a two-week taper, week by week.

16 stages, 184 km, high point 2,600 m. The weekend pair, midweek vertical, a rehearsal of the 8 hour longest day and a two-week taper, week by week.

4 days, 54 km, high point 1,100 m. The weekend pair, midweek vertical, a rehearsal of the 6 to 7 hour longest day and a two-week taper, week by week.

6 days, 76 km, high point 4,167 m. The weekend pair, midweek vertical, a rehearsal of the 8 to 10 hour longest day and a two-week taper, week by week.

9 days, 101 km, high point 5,000 m. The weekend pair, midweek vertical, a rehearsal of the 6 to 8 hour longest day and a two-week taper, week by week.

4 days, 44 km, high point 4,750 m. The weekend pair, midweek vertical, a rehearsal of the 6 to 8 hour longest day and a two-week taper, week by week.

5 days, 79 km, high point 4,630 m. The weekend pair, midweek vertical, a rehearsal of the 8 to 11 hour longest day and a two-week taper, week by week.

4 days, 47 km, high point 4,407 m. The weekend pair, midweek vertical, a rehearsal of the 7 to 9 hour longest day and a two-week taper, week by week.

3 days, 35 km, high point 3,880 m. The weekend pair, midweek vertical, a rehearsal of the 6 to 8 hour longest day and a two-week taper, week by week.

3 days, 36 km, high point 4,414 m. The weekend pair, midweek vertical, a rehearsal of the 5 to 7 hour longest day and a two-week taper, week by week.

5 days, 79 km, high point 871 m. The weekend pair, midweek vertical, a rehearsal of the 9 to 11 hour longest day and a two-week taper, week by week.

8 days, 128 km, high point 1,200 m. The weekend pair, midweek vertical, a rehearsal of the 8 to 12 hour longest day and a two-week taper, week by week.

8 days, 96 km, high point 484 m. The weekend pair, midweek vertical, a rehearsal of the 5 to 6 hour longest day and a two-week taper, week by week.

Why trek descents hurt more than the ascents, where the big descents sit on twenty famous treks, and the short sessions that keep the last days walkable.

Sleeping altitude on twenty famous treks, go high, sleep low, the warning signs of altitude sickness, and what training can and cannot do about any of it.

Why Zone 2 carries a trek plan, what each zone is for, how heart rate behaves at altitude and on day five, and a calculator for your own zones.