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Explore famous cycling mountain passes directly on Strava route maps. Highlights iconic cols with difficulty-based colors. 🚴 Cols Atlas — 5,000+ Cycling Climbs On Your Strava Map The free Chrome extension that overlays famous mountain passes and cols directly on Strava's route builder. Discover iconic climbs, see start points, view gradient profiles, and plan epic routes. 🌐 Full overview: https://colsatlas.ch ✨ Features • 5,000+ cols across 20+ countries • Color-coded by difficulty (HC, Cat 1, Cat 2, Cat 3) • Start points for every documented climb • Gradient profiles from CyclingCols.com • Filter by length, elevation, slope, gradient • Search by col name in seconds • Works directly inside Strava — no separate app What's new in v1.4.8 - 🏔️ Climbs on your profile — See matched cols directly on Strava's elevation profile. - 🗺️ Explore Europe — Discover mountain regions and countries, then click to dive in. - 🔍 More climbs as you zoom — Iconic climbs first, hidden gems as you explore closer. - 🧠 Smarter matching — More reliable climb positions on manually drawn routes. - ✨ Cleaner cockpit — Search and route analysis are always within reach. What's new in v1.2.0 • Overlay rebuilt for Strava's new map engine — markers, start points, and camera now work smoothly on the updated maps. What's new in v1.1.0 • Redesigned pin icons — distinctive teardrop shape with mountain silhouettes for each climb category • Cleaner data — eliminated all geocoding errors that placed markers in wrong countries (~1,300 fixes) • Cross-border cols now correctly placed (Bernina, Stelvio, Splügen, Alpe di Neggia, and many others) • Improved start point markers — better highlight effect on selected cols • Cleaner col popups — removed road codes from start place names 📜 Data licensed from CyclingCols.com (non-commercial). Cols Atlas is not affiliated with or endorsed by Strava Inc. 💬 Found an issue? Visit colsatlas.ch ━━━ HOW IT WORKS ━━━ 1. Install Cols Atlas 2. Open any Strava route map (strava.com/routes or strava.com/maps) 3. Coloured col markers appear automatically on top of the map 4. Click any marker to see every documented route to the summit 5. Use the side panel to search, filter, and explore ━━━ WHY COLS ATLAS ━━━ Planning a cycling holiday? Training for an alpine sportive? Chasing famous Tour de France climbs? Cols Atlas turns Strava's flat route-builder into a decision tool. See at a glance which HC climbs are within reach, filter out anything longer than 10 km, or hunt for hidden Cat 2 climbs along your planned route. ━━━ PRIVACY ━━━ No tracking. No analytics. No accounts. No data sent anywhere. Everything runs locally in your browser. Full privacy policy: https://colsatlas.ch/privacy ━━━ DATA ━━━ Climb data sourced from CyclingCols.com, used with permission. Start coordinates geocoded via OpenStreetMap. ━━━ NOT AFFILIATED ━━━ Cols Atlas is an independent project. Not affiliated with, endorsed by, or sponsored by Strava, Inc. ━━━ FEEDBACK ━━━ Found a missing col? Wrong gradient? Email support@colsatlas.ch or use the "Found an issue?" link in the extension. Climb On 🚴♂️⛰