I've had the privilege of being a half marathon pace group leader for over 30 half marathons. It's been a joy to lead groups to their finish time and encourage and support athletes along the way. For me, a big part of being a pace group leader was keeping people entertained, engaged, or distracted from the distance left to go.
Over the years I developed a personal "joke script" of jokes that I could tell at road races. These jokes are pretty general, suitable for most audiences, and are generally "safe for the workplace."
Here are my pace group leader jokes by category:
Medical, Doctor, Dentist, Nurse Jokes
These jokes are considered "public domain," meaning there are no
known copyrights or issues of using someone else's work without their
permission. I hope they can bring you some laughter during these strange times.