Gain is not the same as altitude
Elevation gain is the total climbing on a route, added up across every uphill section. Altitude is how high you are. A trail that starts at 2,000 meters and climbs 300 meters is a low-gain day at high altitude, while a sea-level trail can have 1,500 meters of gain.
Most trail listings show cumulative gain, which means rolling terrain adds up fast. A route with five 100-meter climbs has 500 meters of gain even if it never feels steep.
A rough guide to difficulty
These ranges assume a fit adult with a daypack. They are not rules, but they help you compare trails at a glance.
- Under 300 m: easy, suitable for most fitness levels
- 300 to 600 m: moderate, expect some sustained climbing
- 600 to 1,000 m: strenuous, plan for a full day
- Over 1,000 m: hard, treat it like a mountaineering objective
Gain-to-distance ratio
A useful number is meters of gain per kilometer. Under 50 m/km is gentle. Around 100 m/km is a solid workout. Over 150 m/km is steep enough that you will be using your hands in places.
Compare two trails: 8 km with 400 m of gain is 50 m/km, a pleasant half day. 8 km with 1,200 m of gain is 150 m/km, and it will take roughly twice as long as the distance suggests.
What the numbers do not tell you
Trail surfaces change everything. A steep switchbacked trail on packed dirt is easier than a gentle trail through talus. Exposure, altitude, weather and water availability are not in the gain number, and any of them can turn an easy route into a serious one.
Read recent trip reports when you can. A trail that was straightforward in July can be a different route after a washout in September.
Planning with gain in mind
If you are new to climbing, add about 100 meters of gain per week rather than jumping from flat walks to a 1,000-meter day. Your legs adapt faster than your tendons, and the tendons are what get injured.
Bring more water than the distance suggests. Climbing makes you breathe harder and sweat more, and the summit is usually the driest part of the route.
