The Côte d'Ans climbs north-westwards from Liège towards Ans on the rising line of Rue Walthère Jamar. It is an urban ascent, with the road carrying you through the built-up hillside rather than out into the countryside. The route's short distance makes the change of level easy to overlook until the slope becomes the main feature of the street ahead.
The selected climb covers about 1.3 kilometres and gains roughly 70 metres. Its changing gradient gives the effort more variety than a single average can convey, while the overall rise remains modest beside the steeper climbs around Liège. That scale makes it feel like a useful passage to higher streets, with enough resistance to register as a climb in its own right. Ans has a restrained character: a recognisable uphill journey woven into the everyday shape of the town.
01 / The ascent
Elevation profile
02 / The numbers
Climb statistics
- Distance
- 1.34 km
- Elevation gain
- 70 m
- Average gradient
- 5.1%
- Climb category
- Uncategorized
- Start elevation
- 108 m
- Summit elevation
- 178 m
03 / 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.
Use your intended climbing effort, rather than FTP unless you can hold it for the predicted duration.
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.
Modelled moving time
5 min
- Power throughout
- 225 W
- Average speed
- 15.5 km/h
Based on the 1.34 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.
04 / On the ground
Route map
Route overview
Côte d'Ans
Liège, Wallonie, Belgium
- Route length
- 1.34 km
- Total ascent
- 70 m
- Average gradient
- 5.1%
05 / Take it home
The climb, as artwork
Turn the route into a personalised topographic print. Choose your colours and composition, then download your artwork.
06 / Keep exploring
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23.7 km away · Explore climb →