The Calendar defaults to a 2 line display which is horrible to read. Click on the number 1 button (top left of main frame) then SHOW. It should all become clear. Then you can filter by distance or area.
Or there is a downloadable Excel version (Link in left hand frame)
PaulB - the Wiggle Bournemouth Arrows Sportive is this Sunday starting near Bournemouth airport. 40% of the route is through Wiltshire with the rest going through Dorset so you might be interested in having a look: