7. Millennium Force: most G-force at one time (4.5 times Earths gravity) and the longest track in the US



Also located at the Cedar Point Amusement Park in Sandusky, Ohio, USA, the Millennium Force was the first roller coaster to exceed 300 feet in height back in the year 2000, and was briefly the tallest closed circuit roller coaster in the world, before being surpassed by the roller coasters already mentioned. At the tallest section you'll endure a stomach-churning 300ft drop; passengers rush and plunge along the track through two separate dark tunnels and two crazy 122 degree overbanked turns that produce a gut-wrenching G force. It is still the longest steel roller coaster in the United States with 6,595ft of steel track and goes up to 93 mph (150 km/h), lasting 2 minutes and 20 seconds, and being capable of handling up to 1,600 riders per hour.