My question has to do with the pace of the Discovery Series. Are there faster and slower runners that do it? I'm a slower runner so I don't want to be left in the dust....but I don't want to hold anyone back. Please let me know if there is room for a slow one in the pack. 

For those who don't know, the Mountainback Discovery Series is an 8-week series of non-competitive runs that take place on Thursday evenings where runners of all levels gather to run one or two legs of the course.  People typically talk about the run and route beforehand (predetermined by the week and leg) and then take off at their own pace, usually breaking down into a faster and slower group.  It's also a fun way to meet other runners prior to race day.  The schedule and directions are available here.