Polar Electro, or in brief Polar, is a manufacturer of advanced training computers and heart rate monitoring equipment. The company is based in Kempele, Finland. Founded in 1977, Polar introduced the world's first wireless heart rate monitor. The company has 26 subsidiaries globally, manages a distribution network supplying over 35,000 retail outlets in more than 80 countries, and employs 1200 people worldwide. Polar manufactures a variety of heart rate measuring devices for athletic training and fitness. Its product line includes training computers for a variety of sports disciplines and activities.
The Frankfurt Marathon is a marathon which has taken place every year in Frankfurt am Main since its inception in 1981. It is the longest-established city marathon in Germany and in terms of the number of finishers, Germany's second-largest. It is organised by the agency motion events.