The number one question we get from clients is not about gear, weather, or altitude pills. It is: "Am I fit enough?"
Here is the honest answer. You do not need to be a runner. You do not need to be young. You need to be able to walk 6–7 hours a day, day after day, with a 6kg daypack, at altitudes where the air has 50% of the oxygen it does at sea level. That is a trainable goal for almost any healthy adult — if you give yourself enough time.
This is the 12-week plan we share with our own clients before they fly to Kathmandu.
The Goal
By week 12, you should be able to do a 5-hour hike on uneven terrain with a 6kg pack, and feel fine the next day to do it again. That is the trek pace. Anything beyond that is bonus fitness.
Weeks 1–4: Build the Base
If you are starting from couch fitness, do not skip this phase. The point is to teach your body to walk for hours without injury.
- 3x per week: 45–60 min brisk walking on flat ground. No pack.
- 2x per week: 20 min strength work — squats, lunges, step-ups, planks. Bodyweight is fine.
- 1x per week: A longer walk, 90 min, on any terrain you can find.
Track how your feet, ankles, and knees feel. If anything hurts beyond mild soreness, see a physio before you escalate.
Weeks 5–8: Add Load and Hills
This is where you start training the legs that will carry you up to Tengboche.
- 3x per week: 60 min walking with a 4–6kg daypack. Add hills if you can find them.
- 2x per week: 30 min strength — now with weighted lunges and split squats. Focus on quads and glutes; they do all the work on descents.
- 1x per week: A 2–3 hour hike with full daypack. Stairs work if you live in a city — 30 min of stair climbing has more carryover to trekking than any treadmill workout.
Weeks 9–12: Specificity
The final block is about mimicking the trek itself.
- 2x per week: 60–90 min walks with daypack. Keep the engine running.
- 1x per week: Strength session — maintain what you have built.
- 1x per week: A long hike — 4–5 hours with full daypack, ideally on consecutive weekends to simulate the back-to-back nature of trek days.
By week 11, do a two-day back-to-back hike if you can. Camp out, walk 5 hours one day, 5 hours the next. If you finish day two feeling capable, you are ready for the Khumbu.
What to Skip
- Running. It does not translate well. Walking with load does.
- Heavy gym lifting. Strength is helpful; bulk is not. You will carry your own bulk uphill.
- Altitude masks. They do nothing useful. Save the money.
What About Altitude?
You cannot meaningfully prepare for altitude at sea level. What you can do is build cardiovascular efficiency, so when oxygen drops, your body has more to work with. Aerobic base — built from months of walking — is your altitude insurance.
Once you arrive in Nepal, our itineraries are designed with acclimatization days built in. Trust the schedule. Do not try to "push through" if you feel symptoms.
The Hidden Variable: Recovery
Trekking is not a one-day effort. It is 12–14 consecutive days of moderate exertion. The trekkers who struggle are usually not the unfit ones — they are the ones who cannot recover overnight. Sleep, hydration, and protein matter as much as the training.
If you have less than 12 weeks before your trek, do what you can. Twelve weeks is the comfort number — eight weeks of focused training will still get most healthy adults to Base Camp. Six weeks is tight. Less than that, and we will have an honest conversation with you about whether to push the trip.
