Fitness Is Not One Thing: Endurance, Strength, Load, Mobility, Recovery

The tent is almost up…

Being able to run far is one of six components. Endurance, strength, load carriage, mobility, technique and recovery all decide whether a long day works.

In short

Outdoor fitness has six components: aerobic endurance, strength, load carriage, mobility, technique and recovery. Train for the route rather than for numbers. A workable week is two strength sessions, two or three aerobic sessions mostly at conversational pace, one long day at 50–70% of the target route, and daily mobility — with 7–9 hours of sleep. Add one variable per week, not four.

Ask a hiker how fit they are and you will get a running time. That answers one of six questions.

The six components

Component	What to train	What it buys on the trail
Aerobic	Long, low intensity; hills	Six to ten hours a day without collapsing
Strength	Legs, core, back and shoulders	Carrying a pack, stability, injury resistance
Load carriage	Uphill and downhill with a pack	Heavy and long trips
Mobility	Hips, ankles, thoracic spine	Squatting, stepping up, scrambling
Technique	Stride, poles, climbing movement	Less energy per metre, less impact
Recovery	Sleep, food, deload weeks	Consecutive days without falling apart

A sample week

Two strength sessions: squat, deadlift, step-ups, calf raises, rows, core. 30–45 minutes each.
Two or three aerobic sessions: brisk walking, easy running, hill intervals. Most of it at a pace where you can still talk.
One long day: 50–70% of the target route, practised with a pack and on descents.
Five to ten minutes of mobility daily, and 7–9 hours of sleep.

Progressing

Add one variable per week — distance, ascent, load or intensity. Not all four.
Mostly easy, occasionally hard. Deload every three to four weeks.
Pain, persistent fatigue or worsening sleep: cut volume first. Do not push through.
Train the two things people skip: descending and carrying a pack.

Self-tests

Can you climb continuously for 30 minutes and still hold a conversation?
With 50–70% of your target load, walking two hours — what fails first, shoulders, lower back or knees?
Can you stand on one leg and step down under control?
Two consecutive days out: how much do you lose on day two?

Common mistakes

Running only, with no strength work and no descent practice.
Lifting only, with no long aerobic days.
Weekend-warrior patterns: nothing all week, then a huge Saturday.
Training through injury and masking it with painkillers.
Ignoring sleep and food, so that more training produces less fitness.