What is Vizvelo?
Vizvelo is a web app you log into with Strava. It pulls your activities into your browser and gives you three things to do with them: look through the numbers, make a card to post, and work on a squares map with a planner for bike and running routes that grow your biggest square.
It's read-only. The privacy policy says it can't change anything on your Strava account, and your activities aren't sent to Vizvelo's server: they're fetched from Strava straight into your browser and kept in the site's storage on your device. The server steps in at login, to swap Strava's one-time code for an access token, and to pass through an activity photo you put on a card. It stores neither. There are no analytics, ads or tracking cookies, by the policy's own description.
The domain was registered in April 2026, and the site is in English and Polish. It shows no price or paid plan.
Key Features
The detail below is what the app shows once you log in with Strava, apart from the share-card styles, which are on the homepage.
Analytics
The overview shows a summary for the range you pick, an insights panel (longest activity, biggest climb, best week, best month, longest streak, favourite day), training volume and a breakdown by sport. Your bikes and shoes appear with their total distance from your Strava profile. A trends tab adds a distance trend, distance per year, and a comparison chart for two metrics over a range or one metric year by year.
Predictions and training load
The predictions tab estimates your 5 km, 10 km, half marathon and marathon times, each based on one of your runs and marked high, medium or low confidence. It estimates FTP for cycling, and for running if your runs have power data, from activities in the last 90 days; the cycling figure sits next to the FTP in your Strava profile, which it shows on its own when there are no rides with a power meter. Training load compares the last 7 days with the last 42 across all sports, with a note that it isn't medical advice. The terms also mention suggested workouts.
Share cards
There are six styles, called Sa Calobra, Formentor, Arieiro, Encumeada, Calar Alto and Veleta. You choose one, decide which stats go on it and in what colour, can add a photo from the activity, and save the card in story or square format for posting.
Squares and the route planner
Every activity fills in squares on a map. The squares page has two grids, squares of about 1.6 km and mini squares of about 200 m, and counts your max square (the biggest solid block), your yard (the largest fully enclosed area), the largest square containing your home, and squares that are new this year. The planner suggests a bike or running route that adds new squares, around home or a place you set, and shows how much of it is paved, gravel and dirt, or unknown. There's also a manual mode: click to add points and the route follows roads. Either way you get a GPX for your bike computer or watch. If you already play Squadrats, the idea will be familiar, but Vizvelo works out its own squares from your Strava activities and its site doesn't mention Squadrats, so the two keep separate scores.
Who It's For
- Runners and cyclists who want stats and predictions without handing their activities to another server
- Square hunters who want a planner that suggests the route for them
- Anyone posting rides and runs who wants a card with the route, the stats and a photo on it
Where is my data kept?
In your browser. Logging out keeps the copy of your activities so the next login is fast; to remove everything, clear the site's data in your browser. To stop Vizvelo reading from Strava, revoke it in Strava under Settings, My Apps.
