Chrome Extension is pending review — sign up for launch updates at support@colsatlas.ch
Cols Atlas running inside Strava
Chrome Extension · v1.5.2

Plan your route
around the climbs
you want to ride.

Your cycling climb layer for Strava.

Discover, explore and add 5,000+ cycling climbs directly to your Strava route — in seconds, without leaving Route Builder.

Add to Chrome — Free Add to Firefox — Free See how it works ↓
Free · No account required · No personal data collected by Cols Atlas

Climb data provided by CyclingCols.com.

5,000+
Climbs
9,300+
Routes
20
Countries
Active — cols visible on map

See it in action

From search to a saved route, in one flow

Click any screenshot to enlarge. Every step below happens directly inside Strava's Route Builder.

See every col right on your Strava map 01 Overview 🔍 Click to enlarge
See every col right on your Strava map
5,000+ mountain passes appear the moment you open Route Builder — no extra tabs, no switching between tools.
Search any col by name instantly 02 Search 🔍 Click to enlarge
Search any col by name instantly
Type a climb name and see every match highlighted on the map — category, elevation, and location at a glance.
One click. One waypoint. One more climb on your route. 03 Add to Route 🔍 Click to enlarge
Found a climb you want? Add it to your route.
One click from the climb popup turns the summit into a waypoint — distance, elevation gain and gradient for every side, right there before you decide.
Know the climb before you ride it 04 Climb Profile 🔍 Click to enlarge
Know the climb before you ride it
A full gradient profile, bar-by-bar, for every route to the summit — sourced from CyclingCols.com.
Every climb saved with your route 05 Save Route 🔍 Click to enlarge
Every climb saved with your route
When you save a route in Strava, Cols Atlas automatically lists every detected col — category, elevation, and all — right in the description.
A complete summary of your ride 06 Route Summary 🔍 Click to enlarge
A complete summary of your ride
Distance, elevation, and every climb on the route — all in one clear overview once your route is saved.

What you get

Everything you need to plan around the climbs you love

Discover, choose and add climbs to your route — without ever leaving Strava.

🗻

5,000+ climbs across 20 countries

Explore legendary climbs — from Alpe d'Huez to Stelvio — directly on your Strava map.

🔎

Find the climb you're looking for

Search by name or filter by category, length, elevation and gradient.

📍

Add climbs to your route

Found the climb you want? Add it as a waypoint with one click — from the popup, the marker, or the start point.

⭐

Save your favorite climbs

Keep up to 20 favorites in their own tab and find them again whenever you plan a ride.

📊

Know the difficulty before you ride

View distance, elevation, and gradient for every side, so you know what you're getting into.

📈

Full climb profiles

Gradient bar-by-bar for every route, sourced from CyclingCols.com — see exactly what's ahead before you ride.

💾

Every climb saved with your route

Save a route in Strava and Cols Atlas lists every detected col in the description automatically.

🧾

A complete route summary

Distance, elevation, and every climb on your ride — all in one clear overview once saved.

5,000+
Climbs mapped
9,300+
Routes to explore
20
Countries covered

Built for cyclists who love climbing.

Add to Chrome — Free Add to Firefox — Free
Free · No account required · No data collected

Climb data and profiles provided by CyclingCols.com.

Cyclist climbing a mountain road with Cols Atlas marker

The story

Built for cyclists, not just data

"Planning a great ride should be simple — not a tab-switching marathon."
🚀 Version 1.5.2

As a cyclist, I was constantly switching between tools just to find good climbs and routes. CyclingCols in one tab, Google Maps in another, Strava in a third. It was exhausting and it pulled me away from the planning itself.

So I built Cols Atlas — a simple way to explore climbs directly inside Strava. No extra tabs. No friction. Just better ride planning.

5,000+ passes. 9,300+ routes. 20 countries. All visible the moment you open your map.

Strava
Paul
Cyclist & creator of Cols Atlas · colsatlas.ch

Transparency

Privacy & Data

🔐

Your privacy matters

  • No personal data is collected
  • No tracking or analytics
  • No cookies for tracking or analytics
  • No data is stored externally
  • No account or login required
  • All processing happens locally in your browser
📚

Data source & attribution

Climb data and profiles are provided by CyclingCols.com, created by Michiel van Lonkhuyzen.

Data and images are sourced from CyclingCols.com and used with permission. Copyright and all rights remain with their respective owners.

Community

Support & shape the project

Cols Atlas is free — every contribution and every idea helps it grow.

No ads • No tracking • Built for cyclists

🏔

Support the project

Enjoying Cols Atlas? Support helps improve the tool, expand the climb database, and build new features.

Support Cols Atlas ⛰️
💬

Help shape the future

Found a bug or have an idea? Get in touch — your feedback directly shapes what gets built next.

💡  Request a feature idea 🐛  Report an issue ✉️  Share feedback