| What it is | Race climbing 1,000 m of vert |
| Distance | Traditionally ≤5 km (very steep) |
| Elite times | ~30–45 minutes uphill |
| Tests | Climbing power & lung capacity |
A vertical kilometer (VK) is a mountain-running race that climbs exactly 1,000 meters of vertical gain, traditionally over a course no longer than 5 km, making it extremely steep. A pure uphill test of climbing power and lung capacity, the fastest athletes summit in around 30–45 minutes, often power hiking the steepest pitches. It’s a signature short, brutal discipline of mountain running.
Straight up
The purest test of vert, demanding power hiking and a high lactate threshold.
Frequently asked questions
What is a vertical kilometer?
A vertical kilometer (VK) is a mountain race in which competitors climb 1,000 meters (about 3,280 feet) of vertical elevation, traditionally over a course of 5 kilometers or less. The defining feature is the relentless steepness — it's a pure uphill effort, one of the most concentrated climbing challenges in running.
How long does a vertical kilometer take?
Elite athletes complete a VK in roughly 30 to 45 minutes, depending on the course's steepness and terrain, while most participants take considerably longer. Because the gradient is so steep, even the fastest racers often power hike the steepest sections rather than run them.
How do you train for a vertical kilometer?
Focus on uphill power and high-end aerobic capacity: lots of steep climbing, hill repeats, power-hiking drills, and threshold and VO2-max work to handle the sustained near-maximal effort. Strong legs, efficient uphill technique, and mental tolerance for prolonged discomfort are key for a VK.
Sources
- Mountain running disciplines — American Trail Running Association
- Vertical races — The Mountaineers