Back in the day when Hong Kong was still British, the Ghurkas would always win the yearly “Trailwalker” - a 100 km race for a 4 person team, across the mountains and valleys of Hong Kong’s New Territories. The one year I raced (our team didn’t finish), one of the Ghurka teams won with a time of <36 hours.
I remember a show, probably on “The History Channel” about how the British first ran into the Gurkhas.
When the British met them they were really impressed by their fighting spirit. On the other hand, the Gurkhas were also impressed by the British men’s fighting ability. Great Britain did not create a vast empire because they were wimps.