Big Thunder Mountain Railroad's top speed varies slightly depending on the specific park version, but generally it reaches around 30 to 35 miles per hour (mph).
- At Disneyland Paris, the ride has a top speed of about 41 mph and lasts around 4 minutes over a track more than 1.5 miles long
- The Magic Kingdom version in Walt Disney World typically reaches about 35 mph, with a ride duration of approximately 3 minutes. It features no inversions and has a height requirement of 40 inches
- Other sources note speeds ranging from 24 to 30 mph for the Walt Disney World version, with a mountain height just under 100 feet
- The Disneyland Paris version is noted as the fastest among the Disney Big Thunder Mountain coasters, with the Walt Disney World version being a bit slower but still reaching up to 35 mph
In summary, Big Thunder Mountain Railroad generally runs at speeds between 30 and 41 mph depending on the park, with the most common top speed cited around 35 mph for the Magic Kingdom ride.
