Better practice your wind sprints. Those that know, know.
To the beginners, you can run whatever you want. You can run a red dot; however, most top competitors run LPVOs and red dots on pistol. There are no classes. Typically RBGC run and gun doesn’t have the mud and water that the other events do. There will likely be a water crossing (little creek), some sand and some low crawling, and a wall to climb. Most of the run will be on road vs trails, dirt roads and woods that the other events have. You can walk the whole thing if you want, run all of it, or a combo. Completing the course is a win for most people. It’s a good challenge for yourself and your gear. You are scored 50% run time and 50% shooting score.
What stage are you ROing?