Skip trying to simply sweat off the pounds with saunas and sweat suits. For true, lasting weight loss, instead keep your focus on a consistent, balanced workout plan and a healthy diet with the right caloric deficit.
I'm thinking about training for a marathon. A marathon is 26.2 miles or 42 kilometers. Although some marathons differ in their terrain (some are very flat, some are extremely hilly) and degree of difficulty, the distance is always 26.2 miles. Races that are shorter or longer in distance have different names (such as 5K, 10K, half-marathon, or ultra-marathon).
The London Marathon, one of the six World Marathon Majors, has been contested by men and women annually since 29 March 1981. Set over a largely flat course around the River Thames, the marathon is 26.2 miles (42.2 km) in length and generally regarded as a competitive and unpredictable event, and conducive to fast times.