Google Calendar won't show everything here on the GLMX page.
If you click into it, you get the Google features, and it's mobile device-friendly.

You can click on an event and see if it includes Bikes and/or ATVs.
You can see a map to the town each track is located in.
You can set email reminders for events you don't want to miss.
You can probably do more things we haven't tried yet, too! Have fun~