Garmin GPX analyzer. Export a GPX from Garmin Connect and upload it to view elevation profile, total gain, grade %, and tough segments.
If you track runs with Garmin, export your route as GPX and use ElevationFinder to spot climbs and pacing risk areas.
Every page on this site has a Markdown mirror at the same path with a .md suffix (for example /calculator.md), and honors an Accept: text/markdown request header on the HTML URL. The calculations here are also available as callable tools through a free public MCP server — no account or API key.