We've decided to add hill workouts to our schedule. The race in Nashville is fairly hilly, and another race that we're running in training also has a HUGE 1 mile uphill climb in it, so running hills in training will help get us ready for those two races.
Our Tuesday runs, which are 8-10 mile runs, we are adding a section where with roughly a 500 foot climb in the middle. We did this for the first time this last Tuesday. It's tough, but after you get started climbing, it gets easier. We've also decided to do all of our Saturday long runs on Monte Sano, which has alot of gently rolling hills.