There’s a piece of advice that gets repeated on every trail and in every trekking forum: the only way to train for hiking is to hike. In other words: just hike into shape.
It sounds sensible. It’s also only half true, and the half that’s missing is the half that ends treks.
Here’s the honest version. Hiking is a wonderful way to build your aerobic engine, and nothing replaces real time on your feet under a pack. But hiking mostly trains you in one plane, at one intensity, through a limited range of motion. A multi day trek then asks for everything else: braking strength on long descents, stability on rubble, a core that holds a loaded pack upright for eight hours, and feet and ankles that absorb thousands of uneven steps without complaint.
Those qualities are built faster, more safely, and more reliably with targeted strength work than with more miles. And there’s a bigger reason this matters as the years go by: from around age 30, adults lose roughly 3 to 8 percent of muscle mass per decade, and the decline accelerates after 60. Strength training is the single best tool we have for slowing and even reversing that. The trail alone won’t do it.
So which muscles does a trek actually test? Four systems, in this order.
1. Your core: the pack carrier
Everything starts here. Your core is what keeps a loaded pack from folding you forward hour after hour, and it’s what stabilizes every step you take on uneven ground. A weak core doesn’t announce itself in the gym. It announces itself on day three of a trek as lower back ache, collapsing posture, and a stride that gets sloppier and riskier as the day goes on.
Train it in all directions, not just the front. Dead bugs teach your trunk to stay rigid while your limbs move, which is exactly what walking with a pack demands. Anti rotation work like the Pallof press builds the resistance to twisting that keeps you stable when a foot slips. And hinge movements like the deadlift strengthen the lower back that your pack leans on all day.
2. Your glutes: the stabilizers
Your glutes align and stabilize everything below them. When they’re strong, your knees track properly, your stride stays efficient, and each step costs less. When they’re weak, the strain migrates downward, and it usually presents itself as knee pain that has nothing to do with your knees.
The best glute work for trekking is single leg work, because the trail is a single leg activity. You are never standing on two feet at once while you walk. Bulgarian split squats, single leg Romanian deadlifts, and banded side steps mimic the imbalance and instability of real terrain far better than any machine.
3. Your quads: the brakes
Your quads power you up the big climbs, but their most important trekking job is the one almost nobody trains: braking on the way down. Every descending step asks your quads to lengthen under load, absorbing your body weight plus your pack, thousands of times in a row. This is precisely the kind of loading that day to day life never provides, which is why the descent breaks more trekkers than the climb ever does.
Eccentric step downs, slow walking lunges, and heel elevated squats build exactly this braking strength. Slow, controlled lowering is the entire point: the down phase of the exercise is the part that trains you for the down phase of the mountain.
4. Your lower legs: the foundation
Calves, ankles, shins, and feet. The smallest system on this list, and the one that quietly decides whether your trek is comfortable or miserable. These muscles handle enormous forces with every step, they control your stability on every rock and root, and they’re the last thing anyone thinks to train.
Eccentric calf raises, done slowly off the edge of a step, strengthen the calf and the Achilles together. Tibialis raises balance out the front of the shin and help protect against shin pain. And simple single leg balance work builds the ankle control that keeps a rolled ankle from ending your trip.
You can’t hike into shape alone. Here’s the fix.
You don’t need to live in a gym. Two strength sessions per week, hitting all four systems, changes everything: eight to twelve weeks of that alongside your hiking is the difference between arriving at your trek with an engine and arriving with an engine AND a chassis.
Keep the weights honest. Bodyweight work is a fine start, but tendons and bones adapt to load, and a loaded backpack on trek day is a load. Build up gradually, prioritize form, and treat the slow lowering phase of every exercise as the main event.
And keep hiking. This was never an argument against trail time; it’s an argument against trail time being your only training. The miles build the engine. The strength work builds everything the engine is bolted to.
If you’d rather not design this yourself, it’s already done: our Trekking Fitness Plan programs all four systems across 8 weeks, with a video demo for every exercise and bodyweight alternatives throughout, alongside the rucking and aerobic work that builds the engine itself.
