According to the Goodyear website, the three active GZ-20 blimps are 192 feet (58 meters) long, 59.5 feet (18 meters) tall, and 50 feet (15 meters) wide.
For comparison, the largest airships ever built, the Zeppelin company's Hindenburg, LZ-129, and the Graf Zeppelin II, LZ-130, were 804 feet (245 meters) long and 135 feet (41 meters) in diameter, over four times as long and over twice as wide as the current Goodyear blimps. The largest blimp ever made by Goodyear was the U.S. Navy's ZPG-3, at 403 feet (121 meters) in length. The current Zeppelin NT is 246 ft long (75 meters),64 ft Wide (19.5 meters) and
57 ft (17.4 meters) High.
Blimps are non-rigid (meaning their shape is not maintained by a rigid aircraft internal structure) and dirigible (directible/steerable) airships. This terminology is seldom used in connection with blimps, being associated more with the great rigid airships of the past.
Typical cruising speed is 35 mph in zero wind. Top speed is 53 mph on the GZ20. Maximum range is limited to around 900 miles, or twenty-four hours without refueling. However, cross country ferrying are usually limited to about 300 miles per day, usually amounting to up to eight hours of flying.