Mongolia competed at the 2017 World Championships in Athletics in London, United Kingdom, from 4–13 August 2017.
Results (q – qualified, NM – no mark, SB – season best) Men Track and road events AthleteEventFinalResultRankSer-Od Bat-OchirMarathon2:21:5548Munkhbayar Narandulam2:18:42 PB34Tseveenravdan Byambajav2:21:4846
Women Track and road events AthleteEventFinalResultRankMunkhzaya BayartsogtMarathon2:46:5958Khishigsaikhan Galbadrakh2:44:4852
References