Strict rules
The Comrades Marathon, an 87 kilometer, point-to-point race in the Republic of South Africa, adheres to strict time limits for runners.
At various locations along the course, runners slower than the designated pace are disqualified and ordered off the course. Rescue buses are available to transport them to the finish. No exceptions are made.
You may not want to employ this method in your race but it is a good example of race organizers implementing published rules.
Posted in Course issues