The event course follows a lakeside single track north of Camp Toilogt through woods and over windblown lowlands for the first 12km (7.5 miles). In the next 5 km, the course departs the lake and heads up over 700 meters (2,400 feet) into the mountains to spectacular views and 2,300 meter (7,550 ft) Chichee Pass. From this first pass, the route heads south along a ridge, descends steeply into a river valley, follows along the river bed through sometimes marshy sections, returns up another river valley, and climbs steeply through a mossy forest to Khirvesteg Pass. From the second pass, runner’s descend steeply again to another valley and return to the lakeshore to make their way back to Camp Toilogt and the 42km mark – the finish of the marathon and Aid-station No. 4 for 100 km runners.

For the 100 km course, the route continues along the lake to the south-west, following a mostly flat dirt trail for 15 km, then ascends Jankhai Pass at just under 2,000 meter elevation. From Jankhai Pass, the course is primarily a gentle downhill over trails and unpaved single-track roads, with the final 25 km (15 miles) level along the lakeshore. The accumulated elevation gain/loss for the marathon distance is around 2,255 meters (7,400 ft) and for the 100 km it is around 3,365 meters (11,040 ft). Lowest elevation is 1645 meters (5,400 ft) and highest elevation is 2,300 meters (7,550 ft). The cut-off time for the ultra-marathon is 18 hours.

Cut-off times at key aid stations will be enforced so that the last runner finishes the Mongolia Sunrise to Sunset before last light (Sunset!). Cut-off times are arranged to ensure that any runners that miss cut-offs can be shuttled to the finish area by last light. Local volunteers assist in relaying supplies and manning the aid stations. Doctors will be able to reach all sections of the course on horseback.

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