It was the first gold medal for Colombia at this edition of the World Championships, reports Xinhua news agency.
Arevalo, the former world junior champion, recorded a new national record of 1 hour, 18 minutes and 53 seconds on Sunday night, also improving his previous best by 52 seconds.
Authorised neutral athlete Sergei Shirobokov finished runner-up at two seconds adrift. Brazil's Caio Bonfim ranked third in 1:19:04.
The final stretch saw a fierce struggle for the bronze with Lebogang Shange of South Africa narrowly missing out on a spot on the podium with a time of 1:19:18.
Christopher Linke of Germany (1:19:21) and Australia's Dane Bird-Smith (1:19:28) took the next two positions.
China's Wang Kaihua finished seventh at 1:19:30 beating Alvaro Martin (1:19:41) of Spain by a narrow margin.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
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