I uploaded a new version of Run4Fun on OpenNTF. In this version you can compete in teams against each other. Just sign up as a participant, register teams and sign up for a team. The team result will be included in the scoreboard and is the aggregation of individual team-member scores. How much more fun is that 
I also implemented a nice time-line for the event so you see the history of changes in a nice graphical overview.
Besides that some minor changes in the layout. And probably some fixes.