“Marathons are hard. Double marathons are harder.”

A perennial favorite on Perfect Duluth Day is Eric Strand’s annual video of his jaunt from the finish line to the starting line and back to the finish line of Grandma’s Marathon. Yes, that’s right, he runs the course twice. Every year. The 2019 installment is the eighth-annual Grandma’s Marathon Double, and includes, among others, an about-to-be-married dude named Zach embarking on the 52.4-mile run.