Alpe di Siusi from Lanzin: Cycling Climb

The climb · Italy

About Alpe di Siusi from Lanzin

The road from Lanzin climbs towards Compatsch and the high meadows of Alpe di Siusi. Following Via San Valentino and the access road to the plateau, it gains height through a sequence of bends beneath the Dolomite skyline. The selected ascent covers about 9.3 kilometres at an average gradient of 7.8%, enough to give the arrival on the upper ground a substantial weight.

Compatsch provides a clear destination at the edge of the wide meadow landscape. The change in scale is the reward: the approach is organised around a climbing road and its turns, while the plateau opens into a much broader view of grassland and mountains. This approach begins at Lanzin, above the lower valley roads; it does not include a longer ascent from Fiè or the road beyond Compatsch towards Panorama. The finish feels spacious after the concentrated work of getting there.

01 / The ascent

Elevation profile

Start 1,092 m · Summit 1,823 m

Gradient by distance9.29 km / 1,038 m gain

0 km1.9 km3.7 km5.6 km7.4 km9.3 km

02 / The crux

Where it gets difficult

Choose a distance to find the steepest continuous section of the climb.

Steepest 500 m average

18.6%

Where to find it

2.40–2.90 km from start

Net height gained: 93 m
Section length: 500 m

The whole climb9.29 km

0 kmFinish

03 / The numbers

Climb statistics

Distance: 9.29 km
Elevation gain: 1,038 m
Average gradient: 7.8%
Climb category: 1
Start elevation: 1,092 m
Summit elevation: 1,823 m

Current weather

At the climb start

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Weather data: MET Norway

04 / Your effort

How long would it take?

Enter the power you could hold for the whole climb. We calculate a moving time from the elevation profile and the forces you ride against.

Sustained power

W/kg

Use your intended climbing effort, rather than FTP unless you can hold it for the predicted duration.

Rider weight (kg)

Bike + kit weight (kg)

Bike + kit includes clothing, bottles and luggage.

Advanced settings

Defaults represent a road-bike scenario. Adjust these settings to match your tyres, drivetrain and riding position.

Effective drag area (CdA) (m²)

Rolling resistance (Crr)

Drivetrain efficiency (%)

Modelled moving time

59 min

Power throughout: 225 W
Average speed: 9.4 km/h

Based on the 9.29 km elevation profile. Assumes steady power, with no stops, braking or drafting. Rounded to the nearest minute.

The science behind the calculation

For each part of the stored profile, we solve the steady-state cycling power equation for speed, then add distance ÷ speed across the climb. Gravity uses rider + equipment weight; available power is W/kg × rider weight. This uses the profile’s distance and elevation together, without mixing in another route’s metrics.

Power × efficiency = gravity + rolling resistance + air resistance + bearing losses

The resistance equations are adapted from Martin et al. (1998), Validation of a Mathematical Model for Road Cycling Power. Air density changes with profile altitude using NASA’s standard-atmosphere model. This calculator’s adaptation has not been independently validated.

It predicts travel at the power you enter, including on descents. It does not model acceleration, cornering, braking, traffic, wind, changing weather or fatigue. At altitude, choose power you can sustain there: thinner air reduces drag, but this model does not predict its effect on your ability to produce power. Profile quality and assumed equipment settings also affect the result.

05 / On the ground