Annual run held since 1999

* MS2S 2020 postponed – full refund for participants *

Short notice race in late summer or fall is possible

* Join the virtual “Run for ecoLeap” on August 8 *

The Coronavirus News Letter Update 5 June 2020

Mongolia Sunrise to Sunset video by Braulio Romero

Mongolia Sunrise to Sunset video by Munkhdul Sergelen

Mongolia Sunrise to Sunset 2018 video by Munkhdul Sergelen

Location: Hovsgol National Park, Mongolia

Distances: 42 km and 100 Km
Maximum time allowed: 18 hours
Elevation at race start: 1645 m
Gain/Loss: 42 Km – 2255 m / 100 Km – 3365 m

Consider joining our quest to preserve the unique nomadic culture and the pristine nature of Northern Mongolia by donating.

atm logo

Mongolia Sunrise to Sunset is part of the Asia Trail Masters 


Mongolia Sunrise to Sunset 100km completion qualifies as 4 points in

new scale (2 points in the old scale) for the Ultra-Trail du Mont-Blanc®

Mongolia Sunrise to Sunset is also a proud member of ITRA

Jap tab

Some legal information:

Imprint ecoLeap foundation

Copyright 2013 by ecoLeap foundation, Switzerland.

All rights reserved.

Responsible for this website:

ecoLeap foundation

c/o Lenz & Staehelin Avocats

Route de Chêne 30

1208 Geneva


Send us an e-mail

Registered in the Commercial Register of Canton of Geneva under the identification number CH-660-1328009-0

Chairman of ecoLeap foundation: Nicolas Musy


ecoLeap foundation endeavors to regularly verify and update all information and data published on its website. Despite this high diligence it is possible that some information or data may have changed, are inaccurate or contain typographical errors. ecoLeap foundation cannot be held responsible for nor provide any express or implied warranty in relation to the accuracy, completeness and correctness of such information or data nor for their fitness for particular purpose or non-infringement.

The content and structure of the ecoLeap foundation website are copyrighted. Any reproduction of information or data, in particular the use of texts, text parts or images requires the prior written consent from ecoLeap foundation.

Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /customers/3/9/f/ms2s.dk/httpd.www/wp-content/themes/hope/functions.php on line 55 })