It's about as tall as The Hollywood Sign.
It's about one-and-one-tenth times as long as a Semitrailer.
In other words, 50 feet is 1.042 times the length of a Semitrailer, and the length of a Semitrailer is 0.95970 times that amount.(a.k.a. semi-trailer truck, a.k.a. semi, a.k.a. tractor-trailer, a.k.a. truck and trailer, a.k.a. eighteen-wheeler, a.k.a. big rig, a.k.a. Mack truck, a.k.a. transport, a.k.a. lorry, a.k.a. artic; for box truck; United States Federal length limits)
According to the United States Department of Transportation (DOT), the maximum allowable length of a semitrailer pulled by a road tractor truck is 48 feet (unless superseded by state law). These regulations also allow the vehicles to tow up to 36,000 kg in gross weight.
It's about one-and-one-fifth times as tall as a Brachiosaurus.
In other words, the height of a Brachiosaurus is 0.830 times 50 feet.(based on comparable bone measurements, height to head)
Dinosaurs in the genus Brachiosaurus had an estimated height (at the head with neck fully extended) of up to 43 feet. A resin cast of the first Brachiosaurus specimen, owned by the Field Museum in Chicago, is currently on display at the O'Hare International Airport.
It's about four-fifths as long as a Bowling Lane.
In other words, 50 feet is 0.795570 times the length of a Bowling Lane, and the length of a Bowling Lane is 1.2570 times that amount.(USBC specifications; tenpin; including pin deck)
According to the United States Bowling Congress specifications, a tenpin bowling lane should measure 62.8480 feet. In a Professional Bowling Association game, the lane must be lubricated by about 25 ml (0.85 fl. oz) of oil.
It's about three-fourths as long as a Cricket Pitch.
In other words, 50 feet is 0.7575760 times the length of a Cricket Pitch, and the length of a Cricket Pitch is 1.320 times that amount.(per Marylebone Cricket Council / International Cricket Council Law #6)
The length of a cricket pitch, from one bowling crease to the other, is 66 feet. The wickets at either end of the pitch stand 2.36220 feet tall including the bails.
It's about one-and-two-fifths times as tall as a Telephone Pole.
In other words, the height of a Telephone Pole is 0.710 times 50 feet.(a.k.a. Utility Pole, a.k.a Power Pole, a.k.a. Telegraph Pole, a.k.a. Telegraph Post, a.k.a. Hydro Pole) (exposed height; per Florida Public Service Commission average)
A standard telephone pole is 36 feet tall. Despite alternatives, most telephone poles in the US are made of wood — most commonly pine — and have a lifespan of 25 to 50 years, depending on climate and preservatives applied.
It's about three-fifths as long as Baseball base distances.
In other words, 50 feet is 0.555560 times the length of Baseball base distances, and the length of Baseball base distances is 1.80 times that amount.(MLB Official Baseball Rules specification)
According to MLB Official Baseball Rules, the distance between baseball diamond bases is 90 feet. While second and home base are located upon the corners of the 27.432 sq. m area created by the bases, first and third base are placed within that square, to better allow the umpires to judge whether a ball is fair or foul.