I have updated the colours on the Parkrun map.

Red dots for "Not Yet"
Purple for previously
Blue for ones we've done previously & again this year
Gold for new ones.

Parkrun Google map

The green crosses were obscuring everything else.

I cannot seem to open the link

Let me know if this works :

https://www.google.com/maps/d/u/0/viewer?mid=1lEkikzb2ARGVeLUi0vq1BRk-ken2nca9&ll=54.354373839701566%2C-1.8524050937259062&z=6