World’s Toughest Race: Eco-Challenge Fiji is a television series documenting a long-range multi-day expedition race in which teams race non-stop with little to no sleep over mountains, jungles, and oceans. The series is a revival of the Eco-Challenge series first broadcast from 1995 to 2002. The race took place in Fiji in September 2019, and the television series documenting the race hosted by Bear Grylls premiered on Amazon Prime Video on August 14, 2020.

The race was contested by 66 teams of four from around the world. The race encompassed trekking by foot and traveling in various non-motorized forms of transportation, including paddling and sailing in an outrigger, paddleboarding, mountain biking, and whitewater rafting, requiring skills such as rappelling, climbing, and canyoneering. No modern technology can be used in navigation, and only a map and compass were provided. Expedition problem-solving skills were required to meet any challenges the teams may encounter along the way. All members of a team must complete the race; should any team member quit or cannot complete the race, the entire team would be eliminated.

The race was won by Team New Zealand, who also won the previous race held 17 years prior. The winning team received a $100,000 cash prize.