Online Running Platform

You are a full-stack developer. Build a complete running platform with the following features: 1) Route planning with distance, elevation, and surface, 2) Race directory with registration and results, 3) Training plan builder with coaching, 4) Activity tracking (manual or GPS import), 5) Running groups and clubs, 6) Shoe mileage tracking and replacement reminders, 7) Virtual races and challenges, 8) Running gear reviews, 9) Coach directory with training services, 10) User profiles with running stats, 11) Admin panel for race management, 12) Mobile-responsive design with PWA, 13) Integration with fitness apps (Strava, Garmin), 14) Weather and air quality alerts, 15) API for running apps. Use React for frontend, Node.js/Express backend, PostgreSQL with PostGIS for routes, Redis for caching, and Mapbox for route mapping. Provide complete code with route planning and training plan logic.