BuddyPress.org

Hello Everyone
So I just downloaded the Compatibility plugin and made it through the steps. I changed my pages to the buddypress requested pages and now I’m looking for help with correcting their appearance.

Basically:
I’m happy with this page b/c it wasn’t effect with the plugin – http://instride.org/how-they-train
These pages were – http://instride.org/site-wide-activity-2 OR http://instride.org/running-groups

How do I manipulate the bottom two so that they either have two columns like the top link or decrease the width of the one column?

I understand that I will need to add some code, I just need a step in the right direction to where that code needs to go! Thanks for reading!