Early steam-powered trains in the early 1800s were remarkably slow by modern standards, often moving at speeds comparable to a brisk horse trot or a fast run. The world's first steam locomotive to carry passengers on a public line, George Stephenson's Locomotion No. 1 in 1825, typically reached speeds of about 15 miles per hour (24 km/h) while pulling several hundred passengers. By the time of the famous Rainhill Trials in 1829, Robert Stephenson’s Rocket achieved a then-staggering top speed of roughly 28 to 30 miles per hour without a load. Throughout the mid-19th century, as engineering improved and "Standard Gauge" tracks became common, express trains began to consistently hit 40–50 mph. These speeds were revolutionary at the time, fundamentally altering the human perception of distance and time, even if they seem leisurely compared to the 200+ mph speeds of modern high-speed rail.