Belgium
Damme–Sluisfrom Damme
A 28.4 km flat loop from Damme, 0.8 km of it on cobbles: 43 m of climbing in all. Grimpa draws the real road in pixel art, and your smart trainer feels every stone.
Free · Chrome or Edge, on a computer or Android

The profile
Along the road
- Dammekm 0.0 · 6 m
- Sluiskm 10.3 · 6 m
- Middelburgkm 17.4 · 4 m
- Moerkerkekm 22.0 · 4 m
Kilometre by kilometre
The average gradient of every kilometre, as your trainer will feel it.
| Km | Altitude | Gradient |
|---|---|---|
| 1 | 6 m | 0.0 % |
| 2 | 6 m | 0.0 % |
| 3 | 6 m | 0.0 % |
| 4 | 6 m | -0.0 % |
| 5 | 6 m | 0.0 % |
| 6 | 4 m | -0.2 % |
| 7 | 6 m | 0.1 % |
| 8 | 6 m | 0.0 % |
| 9 | 6 m | 0.0 % |
| 10 | 5 m | -0.1 % |
| 11 | 5 m | -0.0 % |
| 12 | 5 m | 0.0 % |
| 13 | 5 m | -0.0 % |
| 14 | 4 m | -0.1 % |
| 15 | 4 m | 0.0 % |
| 16 | 4 m | -0.0 % |
| 17 | 4 m | 0.0 % |
| 18 | 4 m | 0.0 % |
| 19 | 4 m | 0.0 % |
| 20 | 4 m | -0.0 % |
| 21 | 5 m | 0.1 % |
| 22 | 4 m | -0.1 % |
| 23 | 6 m | 0.2 % |
| 24 | 3 m | -0.3 % |
| 25 | 3 m | 0.0 % |
| 26 | 3 m | 0.0 % |
| 27 | 4 m | 0.1 % |
| 28 | 4 m | 0.0 % |
| 29 | 6 m | 0.5 % |
Built from the real road
Every bend and every gradient is where it is on the mountain: the road and the villages from OpenStreetMap, the land from OpenStreetMap and ESA WorldCover 2021, the height of every metre from Digitaal Hoogtemodel Vlaanderen II, Actueel Hoogtebestand Nederland, and Mapterhorn. All open data, listed on the sources page.
What you need
A smart trainer with Bluetooth, or your bike with a power meter, and Chrome or Edge on a computer or an Android phone. Sign in with your email or Google; the ride saves to Strava.
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