Strava - The #1 app for runners and cyclists
GPX Editor - Load, modify and save your GPX 1.1 files.
GPXSee - GPS log file viewer and analyzer with support for GPX, TCX, KML, FIT, IGC and NMEA files.
gpx.studio - View, create, edit and combine GPX files online to correct your activity data or design new awesome routes.
Google Fit - Effortlessly track any activity. As you walk, run, or cycle throughout the day, your phone or Android Wear watch automatically logs them with Google Fit. • Get instant insights. See real-time stats for your runs, walks, and rides.
GPS Track Editor - GPS Track Editor: Free Windows Application to Make GPS Tracks Better.