This is an extremely dangerous and treacherous trail that should only be attempted with guides and significant mountaineering experience. The trail passes high cols greater than 6000 meters of altitude. There can be long periods where there are little or no resupply points. The trail marked can change rapidly due to shifting glaciers and snowfall.
The Great Himalayan Trail is a 774 mi trail that starts in Taplejung, Nepal and ends in Muchu, Nepal. The trail is considered to be extra difficult to hike and has a total elevation gain of 363508 ft. Normally the trail takes at least 150 days to complete. Either you are not allowed to bring your dog on the Great Himalayan Trail or it is generally not advised.
The warmest months are June, July, and August and the coldest months are December, January, and February. The wettest months are June, July, and August and the driest months are December, January, and February.