Cycling Analytics now supports heart rate zones.

This chart shows the time I spent in each heart rate zone for each week in the last six months. If this was the real chart you could hover over it with a mouse and see more information. You could also have rides grouped by month or by day instead of by week. And, you can hide zones, which makes it much easier if you just want to focus on one zone, .

If you want one of these for yourself, you first need to add heart rate zones. The easy way to do this is to go to the heart rate management page and click “Set zones automatically” and five heart rate zones will be generated automatically based on your maximum heart rate (so make sure that’s set first). However, there are lots of different approaches to making heart rate zones, so this is very flexible — you can tell it how many zones you would like, and then specify your preferred heart rate range for each zone (and you can even specify their names).

This also provides some data to fill in the empty middle of the monthly summaries for users without power data — now it displays a histogram for the time spent in each heart rate zone (with some more detailed information shown when hovering the mouse over it). The colours correspond with the colours on the main chart, although the two pictures I have here come from different times, so the first has eight heart rate zones, and the other only has five.