Whew... I was scared for a minute. You are talking about 60 years of age. When I first read the topic heading, I was afraid it was a new vet check requirement for holds past 60 miles. If so, we are going to need a lot more than 50 minutes to get this done. Heck trotting out the horse is about all the energy I have by that time.
Of course this might make 100 mile rides more popular again