### Is there an existing issue for this? - [x] I have searched the existing issues ### Where did you encounter this issue? live API ### Request URL https://api.openrouteservice.org/v2/pdirections/cycling-mountain/geojson ### POST Request Body ```JSON {"coordinates":[[17.6067066192627,49.33320487690934],[17.655286788940433,49.337483514536736]],"elevation":true,"instructions_format":"html","extra_info":["surface","steepness","waytype"],"language":"en","units":"km","preference":"recommended","alternative_routes":{"target_count":3,"share_factor":0.6,"weight_factor":1.4}} ``` ### Response <details><summary>Response</summary> ```JSON { "type": "FeatureCollection", "bbox": [ 17.606712, 49.327365, 0, 17.65522, 49.338093, 563 ], "features": [ { "bbox": [ 17.606712, 49.327365, 276.5, 17.65522, 49.337477, 563 ], "type": "Feature", "properties": { "ascent": 296.4, "descent": 16.5, "segments": [ { "distance": 4.377, "duration": 943.6, "steps": [ { "distance": 0.039, "duration": 7.8, "type": 11, "instruction": "Head east on <b>49012</b>", "name": "49012", "way_points": [ 0, 1 ] }, { "distance": 0.029, "duration": 6.6, "type": 1, "instruction": "Turn right", "name": "-", "way_points": [ 1, 3 ] }, { "distance": 0.1, "duration": 22.5, "type": 0, "instruction": "Turn left", "name": "-", "way_points": [ 3, 5 ] }, { "distance": 0.806, "duration": 161.1, "type": 12, "instruction": "Keep left", "name": "-", "way_points": [ 5, 10 ] }, { "distance": 0.005, "duration": 1, "type": 0, "instruction": "Turn left", "name": "-", "way_points": [ 10, 11 ] }, { "distance": 0.284, "duration": 56.7, "type": 3, "instruction": "Turn sharp right", "name": "-", "way_points": [ 11, 16 ] }, { "distance": 1.757, "duration": 390.5, "type": 12, "instruction": "Keep left", "name": "-", "way_points": [ 16, 67 ] }, { "distance": 1.34, "duration": 292.2, "type": 0, "instruction": "Turn left", "name": "-", "way_points": [ 67, 85 ] }, { "distance": 0.017, "duration": 5.2, "type": 0, "instruction": "Turn left", "name": "-", "way_points": [ 85, 86 ] }, { "distance": 0, "duration": 0, "type": 10, "instruction": "Arrive at your destination, on the right", "name": "-", "way_points": [ 86, 86 ] } ], "ascent": 296.3934326171875, "descent": 16.4769287109375 } ], "extras": { "waytype": { "values": [ [ 0, 1, 2 ], [ 1, 5, 3 ], [ 5, 86, 5 ] ], "summary": [ { "value": 5, "distance": 0.004, "amount": 96.16 }, { "value": 3, "distance": 0, "amount": 2.95 }, { "value": 2, "distance": 0, "amount": 0.89 } ] }, "surface": { "values": [ [ 0, 10, 0 ], [ 10, 19, 10 ], [ 19, 77, 0 ], [ 77, 83, 10 ], [ 83, 86, 0 ] ], "summary": [ { "value": 0, "distance": 0.003, "amount": 77.09 }, { "value": 10, "distance": 0.001, "amount": 22.91 } ] }, "steepness": { "values": [ [ 0, 10, 1 ], [ 10, 11, 3 ], [ 11, 16, 2 ], [ 16, 17, 5 ], [ 17, 24, 4 ], [ 24, 26, 5 ], [ 26, 36, 2 ], [ 36, 45, 4 ], [ 45, 56, 2 ], [ 56, 72, 3 ], [ 72, 86, 1 ] ], "summary": [ { "value": 1, "distance": 0.001, "amount": 33.07 }, { "value": 3, "distance": 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17.654551, 49.337241, 563 ], [ 17.65476, 49.337283, 559.5 ], [ 17.65522, 49.337323, 556 ], [ 17.655193, 49.337477, 556.4 ] ] } }, { "bbox": [ 17.606712, 49.330957, 0, 17.65522, 49.338093, 563 ], "type": "Feature", "properties": { "ascent": 880.5, "descent": 600.6, "segments": [ { "distance": 4.161, "duration": 922.8, "steps": [ { "distance": 0.184, "duration": 36.9, "type": 11, "instruction": "Head east on <b>49012</b>", "name": "49012", "way_points": [ 0, 8 ] }, { "distance": 1.097, "duration": 239.1, "type": 12, "instruction": "Keep left", "name": "-", "way_points": [ 8, 32 ] }, { "distance": 0.173, "duration": 34.6, "type": 12, "instruction": "Keep left", "name": "-", "way_points": [ 32, 36 ] }, { "distance": 0.456, "duration": 111.3, "type": 1, "instruction": "Turn right", "name": "-", "way_points": [ 36, 43 ] }, { "distance": 1.103, "duration": 248.2, "type": 12, "instruction": "Keep left", "name": "-", "way_points": [ 43, 55 ] }, { "distance": 0.654, "duration": 147.2, "type": 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{ "values": [ [ 0, 10, 1 ], [ 10, 11, 3 ], [ 11, 16, 2 ], [ 16, 17, 5 ], [ 17, 24, 4 ], [ 24, 26, 5 ], [ 26, 36, 2 ], [ 36, 45, 4 ], [ 45, 56, 2 ], [ 56, 72, 3 ], [ 72, 86, 1 ] ], "summary": [ { "value": 1, "distance": 0.001, "amount": 33.07 }, { "value": 3, "distance": 0.001, "amount": 29.91 }, { "value": 2, "distance": 0.001, "amount": 20.52 }, { "value": 4, "distance": 0.001, "amount": 14.35 }, { "value": 5, "distance": 0, "amount": 2.16 } ] } }, "way_points": [ 0, 84 ], "summary": { "distance": 4.161, "duration": 922.8 } }, "geometry": { "type": "LineString", "coordinates": [ [ 17.606712, 49.333218, 276.5 ], [ 17.607229, 49.333124, 277 ], [ 17.607482, 49.333082, 0 ], [ 17.607796, 49.333014, 247.3 ], [ 17.608415, 49.332787, 236.3 ], [ 17.608583, 49.332753, 231.6 ], [ 17.608792, 49.332737, 226.3 ], [ 17.608974, 49.332746, 220.4 ], [ 17.609106, 49.332773, 279 ], [ 17.609113, 49.332776, 0 ], [ 17.609231, 49.332824, 0 ], [ 17.609314, 49.332858, 279 ], [ 17.609657, 49.332964, 280 ], [ 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17.649508, 49.335366, 548.3 ], [ 17.649839, 49.334974, 550.7 ], [ 17.650206, 49.334662, 558 ], [ 17.651557, 49.33561, 556.8 ], [ 17.652208, 49.335971, 556 ], [ 17.65337, 49.336502, 561.5 ], [ 17.654551, 49.337241, 563 ], [ 17.65476, 49.337283, 559.5 ], [ 17.65522, 49.337323, 556 ], [ 17.655193, 49.337477, 556.4 ] ] } } ], "metadata": { "attribution": "openrouteservice.org | OpenStreetMap contributors", "service": "routing", "timestamp": 1777555171638, "query": { "coordinates": [ [ 17.6067066192627, 49.33320487690934 ], [ 17.655286788940433, 49.337483514536736 ] ], "profile": "cycling-mountain", "profileName": "cycling-mountain", "preference": "recommended", "format": "geojson", "units": "km", "language": "en", "instructions_format": "html", "elevation": true, "extra_info": [ "surface", "steepness", "waytype" ], "alternative_routes": { "target_count": 3, "weight_factor": 1.4, "share_factor": 0.6 } }, "engine": { "version": "9.8.0", "build_date": "2026-03-30T12:24:04Z", "graph_date": "2026-04-28T05:37:06Z", "osm_date": "2026-04-20T00:00:00Z" } } } ``` </details> ### Current behavior The ascent and descent values for the alternative route are invalid due to invalid elevations. The route ascends almost the entire time, yet the response contains `"ascent": 880.5` and `"descent": 600.6`. This is due to invalid (zero) elevations: ``` [ 17.607229, 49.333124, 277 ], [ 17.607482, 49.333082, 0 ], [ 17.607796, 49.333014, 247.3 ], ``` Other route profiles, such as `cycling-regular` and `foot-*`, calculate the elevations fine. ### Expected behavior Valid elevations and ascent/descent calculation for the mountain-bike routes. ### Openrouteservice Version 9.8.0 ### Build date 2026-03-30T12:24:04Z ### Graph date 2026-04-28T05:37:06Z ### Forum Topic Link _No response_
Is there an existing issue for this?
Where did you encounter this issue?
live API
Request URL
https://api.openrouteservice.org/v2/pdirections/cycling-mountain/geojson
POST Request Body
{"coordinates":[[17.6067066192627,49.33320487690934],[17.655286788940433,49.337483514536736]],"elevation":true,"instructions_format":"html","extra_info":["surface","steepness","waytype"],"language":"en","units":"km","preference":"recommended","alternative_routes":{"target_count":3,"share_factor":0.6,"weight_factor":1.4}}Response
Response
{ "type": "FeatureCollection", "bbox": [ 17.606712, 49.327365, 0, 17.65522, 49.338093, 563 ], "features": [ { "bbox": [ 17.606712, 49.327365, 276.5, 17.65522, 49.337477, 563 ], "type": "Feature", "properties": { "ascent": 296.4, "descent": 16.5, "segments": [ { "distance": 4.377, "duration": 943.6, "steps": [ { "distance": 0.039, "duration": 7.8, "type": 11, "instruction": "Head east on <b>49012</b>", "name": "49012", "way_points": [ 0, 1 ] }, { "distance": 0.029, "duration": 6.6, "type": 1, "instruction": "Turn right", "name": "-", "way_points": [ 1, 3 ] }, { "distance": 0.1, "duration": 22.5, "type": 0, "instruction": "Turn left", "name": "-", "way_points": [ 3, 5 ] }, { "distance": 0.806, "duration": 161.1, "type": 12, "instruction": "Keep left", "name": "-", "way_points": [ 5, 10 ] }, { "distance": 0.005, "duration": 1, "type": 0, "instruction": "Turn left", "name": "-", "way_points": [ 10, 11 ] }, { "distance": 0.284, "duration": 56.7, "type": 3, "instruction": "Turn sharp right", "name": "-", "way_points": [ 11, 16 ] }, { "distance": 1.757, "duration": 390.5, "type": 12, "instruction": "Keep left", "name": "-", "way_points": [ 16, 67 ] }, { "distance": 1.34, "duration": 292.2, "type": 0, "instruction": "Turn left", "name": "-", "way_points": [ 67, 85 ] }, { "distance": 0.017, "duration": 5.2, "type": 0, "instruction": "Turn left", "name": "-", "way_points": [ 85, 86 ] }, { "distance": 0, "duration": 0, "type": 10, "instruction": "Arrive at your destination, on the right", "name": "-", "way_points": [ 86, 86 ] } ], "ascent": 296.3934326171875, "descent": 16.4769287109375 } ], "extras": { "waytype": { "values": [ [ 0, 1, 2 ], [ 1, 5, 3 ], [ 5, 86, 5 ] ], "summary": [ { "value": 5, "distance": 0.004, "amount": 96.16 }, { "value": 3, "distance": 0, "amount": 2.95 }, { "value": 2, "distance": 0, "amount": 0.89 } ] }, "surface": { "values": [ [ 0, 10, 0 ], [ 10, 19, 10 ], [ 19, 77, 0 ], [ 77, 83, 10 ], [ 83, 86, 0 ] ], "summary": [ { "value": 0, "distance": 0.003, 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"instruction": "Keep left", "name": "-", "way_points": [ 32, 36 ] }, { "distance": 0.456, "duration": 111.3, "type": 1, "instruction": "Turn right", "name": "-", "way_points": [ 36, 43 ] }, { "distance": 1.103, "duration": 248.2, "type": 12, "instruction": "Keep left", "name": "-", "way_points": [ 43, 55 ] }, { "distance": 0.654, "duration": 147.2, "type": 13, "instruction": "Keep right", "name": "-", "way_points": [ 55, 77 ] }, { "distance": 0.477, "duration": 100.3, "type": 0, "instruction": "Turn left", "name": "-", "way_points": [ 77, 83 ] }, { "distance": 0.017, "duration": 5.2, "type": 0, "instruction": "Turn left", "name": "-", "way_points": [ 83, 84 ] }, { "distance": 0, "duration": 0, "type": 10, "instruction": "Arrive at your destination, on the right", "name": "-", "way_points": [ 84, 84 ] } ], "ascent": 880.5265197753906, "descent": 600.6100158691406 } ], "extras": { "waytype": { "values": [ [ 0, 1, 2 ], [ 1, 5, 3 ], [ 5, 86, 5 ] ], "summary": [ { "value": 5, "distance": 0.004, "amount": 96.16 }, { "value": 3, "distance": 0, "amount": 2.95 }, { "value": 2, "distance": 0, "amount": 0.89 } ] }, "surface": { "values": [ [ 0, 10, 0 ], [ 10, 19, 10 ], [ 19, 77, 0 ], [ 77, 83, 10 ], [ 83, 86, 0 ] ], "summary": [ { "value": 0, "distance": 0.003, "amount": 77.09 }, { "value": 10, "distance": 0.001, "amount": 22.91 } ] }, "steepness": { "values": [ [ 0, 10, 1 ], [ 10, 11, 3 ], [ 11, 16, 2 ], [ 16, 17, 5 ], [ 17, 24, 4 ], [ 24, 26, 5 ], [ 26, 36, 2 ], [ 36, 45, 4 ], [ 45, 56, 2 ], [ 56, 72, 3 ], [ 72, 86, 1 ] ], "summary": [ { "value": 1, "distance": 0.001, "amount": 33.07 }, { "value": 3, "distance": 0.001, "amount": 29.91 }, { "value": 2, "distance": 0.001, "amount": 20.52 }, { "value": 4, "distance": 0.001, "amount": 14.35 }, { "value": 5, "distance": 0, "amount": 2.16 } ] } }, "way_points": [ 0, 84 ], "summary": { "distance": 4.161, "duration": 922.8 } }, "geometry": { "type": "LineString", "coordinates": [ [ 17.606712, 49.333218, 276.5 ], [ 17.607229, 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17.646731, 49.336664, 533.8 ], [ 17.646963, 49.336555, 533.8 ], [ 17.647768, 49.336257, 538 ], [ 17.647954, 49.336158, 539.4 ], [ 17.648057, 49.335986, 540.1 ], [ 17.648165, 49.335599, 543.6 ], [ 17.648257, 49.335446, 544.1 ], [ 17.648426, 49.335392, 544.5 ], [ 17.648697, 49.335421, 545.7 ], [ 17.648911, 49.33549, 545.9 ], [ 17.649176, 49.33547, 547 ], [ 17.649508, 49.335366, 548.3 ], [ 17.649839, 49.334974, 550.7 ], [ 17.650206, 49.334662, 558 ], [ 17.651557, 49.33561, 556.8 ], [ 17.652208, 49.335971, 556 ], [ 17.65337, 49.336502, 561.5 ], [ 17.654551, 49.337241, 563 ], [ 17.65476, 49.337283, 559.5 ], [ 17.65522, 49.337323, 556 ], [ 17.655193, 49.337477, 556.4 ] ] } } ], "metadata": { "attribution": "openrouteservice.org | OpenStreetMap contributors", "service": "routing", "timestamp": 1777555171638, "query": { "coordinates": [ [ 17.6067066192627, 49.33320487690934 ], [ 17.655286788940433, 49.337483514536736 ] ], "profile": "cycling-mountain", "profileName": "cycling-mountain", "preference": "recommended", "format": "geojson", "units": "km", "language": "en", "instructions_format": "html", "elevation": true, "extra_info": [ "surface", "steepness", "waytype" ], "alternative_routes": { "target_count": 3, "weight_factor": 1.4, "share_factor": 0.6 } }, "engine": { "version": "9.8.0", "build_date": "2026-03-30T12:24:04Z", "graph_date": "2026-04-28T05:37:06Z", "osm_date": "2026-04-20T00:00:00Z" } } }Current behavior
The ascent and descent values for the alternative route are invalid due to invalid elevations.
The route ascends almost the entire time, yet the response contains
"ascent": 880.5and"descent": 600.6.This is due to invalid (zero) elevations:
Other route profiles, such as
cycling-regularandfoot-*, calculate the elevations fine.Expected behavior
Valid elevations and ascent/descent calculation for the mountain-bike routes.
Openrouteservice Version
9.8.0
Build date
2026-03-30T12:24:04Z
Graph date
2026-04-28T05:37:06Z
Forum Topic Link
No response