This is a tool implemented in python 3 to generate a tcx file from a gpx. It'll find any peak and add alerts so you know when it starts and what kind of hill you're facing. Garmin finally added this feature automatically when you upload a tcx file to your device. You might still want to get some information beforehand without your garmin.

Installation

pyenv virtualenv 3.7.1 gpx
pyenv local gpx
pip install -r requirements.txt

Run

python run-py -h # for help
python run.py --speed 27 file.gpx
2019-10-04 13:49:56 - Hello
distance: 55.5km, elevation: 450m, time: 02:03:20, avg speed: 27.0km/h
  1.0km: 76m/3.8km    Valley
  4.8km: 482m         Summit
 17.6km: 62m/12.8km   Valley
 30.5km: 482m         Summit
 33.9km: 57m/4.7km    Valley
 38.5km: 495m         Summit
 39.5km: Kuhn Hofmärt Generic
 50.1km: 96m/3.7km    Valley
 53.8km: 534m         Summit

Of interest

• https://github.com/tkrajina/gpxpy/blob/master/gpxpy/geo.py