When you register for a race do you really want to know what you are in for? There are two sides to this argument as there is to pretty much anything running related. I’ve approached races from both ends of this spectrum and at various points between.
The obvious benefit to knowing the course is you know how to exactly how to train. You may actually be able to train on the course. You are also less likely to get off course during the race. It also makes it easier to anticipate what you will need at each aid station because you can give a better guess at what time you will come into each aid station.
The potential down side to knowing, you can psych yourself out and worry about particular points in the course. I have a fear of heights and have avoided watching videos of the courses because I can get myself worked up if I think there is going to be a section with big drops and narrow trail.
If you do have fears about certain aspects of courses, you should be training in areas where you have to face those fears. When I’ve gotten to sections where there is drops during a race, I’m able to push through them because I’m in race mode. However, it would be better if I just didn’t get so worked up.
You can also begin to question your ability to complete the course or to deal with aspects of it. Sometimes just having to deal with a situation when it is happening rather than stressing about it is an effective strategy.
The middle ground would be knowing the amount of ascent and descent for the course overall. Knowing that is going to give you enough of an idea to shape your training program to fit the course.
You may choose different styles depending on how far the race is. With a 50k, you’ll finish in less than twelve hours and won’t have a crew. For a 50 miler, you may have pacers and a crew, but i’ll finish within 12-15 ish hours.
One hundreds are different and a lot more planning goes into them. It is better to know more about the course.
When you are using a crew and pacers, the more you know about the course the better it will be for for them because you are going to be able to provide them with more information about what to bring for themselves and when they will be meeting you at each aid station.
If there are big breaks in the time your crew will have the chance to sleep, eat and go to get anything you or they need off the course (depending on how close services are of course).
Knowing the course allows you to build a better strategy. Get to know it as much as you can. Find profile maps, youtube videos, talk with other runners, you’ll be better off in the long run and so will your pacers and crew.