The Vendee Globe Sailboat Race is known for its difficulty, and it is easy to understand why. The rules are simple but brutal. Sail solo around the world in three months with no stops allowed. This is more than just competing. It's risking your life.

The first race was held in 1989, and now, like the Olympics, the race is held every four years. The most recent event ended in January.

HBO's "Real Sports" takes a closer look at this grueling event through a profile of British sailor Alex Thomson. The latest episode premieres 10 p.m. ET/PT Tuesday. Here's a preview:

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