Swimmer Tsanko Tsankov Finishes One of Most Difficult Marathons of Oceans Seven Circuit
Bulgarian open water swimmer Tsanko Tsankov recorded another significant success in his career after swimming one of the most difficult Oceans Seven marathons in Hawaii - the longest of all seven marathons from Molokai to Oahu in 16 hours and 23 minutes, Tsankov's manager Nikolay Iliev said