Free GPX elevation profile viewer. Upload any route to see elevation gain, grade percentages, and climb difficulty on an interactive map. Analyze marathon courses before race day.
Route analysis requires a GPX file, so this page has no static equivalent — but the same analysis is callable as the analyze_route tool on the MCP server, which accepts a GPX URL or file contents.
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.