The world’s only intercontinental marathon has kicked off on Sunday in Istanbul with attendance of thousands of people including a record number of runners.

A total of 63 elite athletes are joining the Vodafone 41st Istanbul Marathon, which started at 0900 am local time [0600GMT] from Istanbul’s Asian side and will end in the European part of the city.

Sponsored by world-famous British telecommunication conglomerate Vodafone, the sports event has four categories — 42.2-kilometer (26.2 miles) marathon, 15-km run (9.3 mi), 8-km (4.9 mi) FunRun as well as a wheelchair competition.

Read more: Intercontinental marathon kicks off in Istanbul