Details.
Minor visual improvements.
Showing weekly Avg time as 2:30 not 2.5h
If little space for legend labels putting them in two rows.
Adding real pace/hr labels.
Showing at most 4 distinct sport colors; rest is grayed out.
Adding sport filtering.
Made demo placeholder with two boxes: demo tour & contest.
Cleaned up JS before merging with the demo.
Demo added to the starter page.
Little tweaks and improvements.