TCX Cycling Data Visualizer: Dual Axis Plot
Cycling is widely considered a one of the best cross-training workouts for runners, it allows to increase training volume without the repetitive high-impact stress on joints and tendons. Here's a tool for uploading and analyzing cycling workouts. This widget extracts metrics like heart rate, speed, power, elevation from TCX files and plots these metrics (optionally, with dual y-axes to overlay different metrics in a single graph) across distance or total time of the ride.

