curl --request POST \
  --url https://api.footstep.ai/v1/routing/compare \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "locations": [
    {
      "lat": 51.5322,
      "lon": -0.124
    },
    {
      "lat": 51.5055,
      "lon": -0.0754
    }
  ],
  "travel_modes": [
    "pedestrian",
    "bicycle"
  ]
}
'