A 1000-meter (about 3,281 feet) elevation gain is a significant and challenging feat, often referred to as a vertical kilometer in mountain running and considered a difficult hike requiring good fitness. This level of elevation can be found in specific hiking and running challenges and is considered challenging due to the steepness and effort required, although it is a standard distance for many competitive events.
Hiking and running: A 1000-meter elevation gain is a serious undertaking that requires good physical fitness and a strong ability to ascend steep terrain.
Many hiking challenges are rated as difficult or challenging when they include an elevation gain of 1000 meters.
In mountain running, a vertical kilometer race is specifically defined as a race with a 1000-meter elevation gain, usually on a course less than 5 km long.
Events can involve a significant elevation gain combined with a long distance, making it a challenging test of endurance.