Question: is 12 kph on a treadmill fast?
Answer: Maximum Speeds If you're wondering, you'll be running a very fast six minute mile at this rate. If you're a beginner, you'll likely not reach this speed. When searching for a treadmill, you'll want a maximum speed of at least 10 – 12 km/h. The higher end may be excessive for your needs, but it depends on your goals.