Simple Walking Analytics Chart Concept

The idea was to create a simple and easy to use walking counter. This mock currently just displays the idea when viewing the 'Walk' category in the app. The whole idea would have other fitness options as well, i.e. 'Run', 'Bike' etc.

When a user uses this interface, they are able to view how they are progressing and compare with their last week's status to help motivate them to achieve a higher goal.

What do you think? Are there improvements that I should consider? I am all ears! :)