How fast, and how long, can a war horse run?

I can attest, as a former owner of an Andalusian-cross horse, they can't run (gallop) for more than 5 minutes straight, often less if the terrain isn't good. They may then proceed at the trot (half the speed, but still decent) for maybe another 10 minutes, then they must walk until they catch their breath fully. read more

A horse is a horse. War horse or not. In the Middle Ages, war horses were Andalusian or some draft cross, typically. They’re not real fast and kinda big and bulky. read more

I can answer only partially. The most powerful horse breed I regard to be the Ardennes horse. This breed was able to carry a fully outfitted knight into battle. The fastest war horse would be light cavalry as used in the Napoleonic and Krim wars. A charge's maximum speed was 20 km/h. read more

The gallop averages 40 to 48 kilometres per hour (25 to 30 mph). The world record for a horse galloping over a short, sprint distance is 88 kilometres per hour (55 mph). Besides these basic gaits, some horses perform a two-beat pace, instead of the trot. read more