In 2013, Thor Pedersen left his home in Denmark for the trip of a lifetime. His goal was to travel to every country in the world. He had three rules for his journey. He had to spend at least 24 hours in each country. He couldn't return to Denmark until he had crossed off every nation on the list....

Lael Wilcox is known as one of the world's best ultra-endurance cyclists. She's ridden over 150,000 miles in more than 50 countries. Now, Lael is going after her wildest idea yet: to break the record for cycling around the world. Her goal is to ride more than 18,000 miles in 110 days.