Retired,69 YO, U.S. Brigadier General Bob Gaylord decided that he would run the 101 mile Appalachian Trail which goes through the Shenandoah National Park.
He had 25 years of experience in running ultramarathons. So, he expected to successfully run this one.
Well, he easily ran the 101 miles in one direction. So, easy in fact that he decided to run the 101 miles in return and out he started.
What he had not considered was the possibility that he might meet mama bear with two cubs! He did and she did not want to let him pass. So, he had to run back a ways and divert around mama bear. All in all, on his return trip he ran 105 miles.
He completed the total 206 mile run in 100 hours and 55 minutes!
Anyone want to try to beat that figure, and you do not have to wait until you turn 69.
NOTE: My source for the above came from:
Sara Davidson, "Breaking Boundaries," Military Officer, February 2018, page 28.
NOTE: The above true story should not be taken as advice to run away from a bear if you meet one. Such would normally trigger an aggressive response in a bear.