Question: What racing stadiom measured 2037 feet in length and had the street Vicus Tuscus run through it?

Context paragraphs:
Length contraction: Length contraction is the phenomenon that a moving object's length is measured to be shorter than its proper length, which is the length as measured in the object's own rest frame.  This contraction (more formally called Lorentz contraction or Lorentz–FitzGerald contraction after Hendrik Lorentz and George Francis FitzGerald) is usually only noticeable at a substantial fraction of the speed of light.  Length contraction is only in the direction parallel to the direction in which the observed body is travelling.  For standard objects, this effect is negligible at everyday speeds, and can be ignored for all regular purposes.  Only at greater speeds, or for electron motion, does it become significant.  At a speed of 13,400,000 m/s (30 million mph, 0.0447"c" ) contracted length is 99.9% of the length at rest; at a speed of 42,300,000 m/s (95 million mph, 0.141"c" ), the length is still 99%.  As the magnitude of the velocity approaches the speed of light, the effect becomes dominant, as can be seen from the formula:

Vicus Patricius: The vicus Patricius was a street in ancient Rome.  It began at the Argiletum (where it divides into the vicus Patricius and the clivus Suburanus), ran across the Cispian and the Viminal and ended at the Porta Viminale in the Servian Wall.

Vicus Jugarius: The Vicus Jugarius (Latin: "Vicus Iugarius" ), or the Street of the Yoke-Makers, was an ancient street leading into the Roman Forum.  The Vicus Jugarius was very old—perhaps even older than Rome itself.  The Latin word "jugarius" can mean either "yoke" or "ridge".

Varugad: The hill rises about 250 feet above the level of the plateau, which itself constitutes the summit of the Mahadev range at this point.  The cone with the walls on it is seen from a great distance and appears very small indeed.  But on near approach it is seen to be but the inner citadel of a place of considerable size and strength for the times in which it was built.  On the south-west the outer wall or enceinte is entered by a rude gateway of a single pointed arch about eight feet high and five feet broad.  As usual there is a curtain of solid masonry inside.  The gate lies about 150 yards east of the edge of the plateau, which there terminates in an almost unbroken vertical precipice of several hundred feet in height and receding in a north-easterly direction.  No wall was built along about three hundred yards of this part which is absolutely unscalable, but for the rest of the way the walling is continued along the edge of the cliff in a north-east direction for about another three hundred yards.  Here it turns still following the cliff to the south-east for another seven hundred yards, and then gradually rounds to the westward covering four hundred and fifty yards more till it meets the gateway.  But for the break of the inaccessible precipice this outer wall would form a nearly equilateral triangle with the corners rounded off, the side being of some six hundred and fifty yards.  Facing nearly north, about fifty yards from the north-east angle, is a gateway with a couple of curtains in solid masonry.  This entrance is cut in the sides of the cliff about twenty feet below the top which is reached by some dozen steps.  It consisted as usual of a pointed arch, the top fallen in, about ten feet high by five broad.  It leads out to the path down to Girvi, a village in the plains below and it probably formed the communication with Phaltan.  This road winds down the face of the range for some five hundred feet till it hits the shoulder of a spur which it then follows to the base.  The walling on the south side, from the edge of the cliff to some hundred yards east of the southern gate, is not more than a couple of feet in thickness and consists of all-fitting stones unmortared.  The rest is massive and well mortared and still fairly preserved.  The average height is from seven to ten feet.  In the south-east angle is a rude temple of Bhairavnath and a few houses with the remains of Man y more.  On the right side of the southern gate is a well preserved stone pond about thirty yards square with steps leading down to it.  Next to and on the north of Bhairavnath's temple is another pond.  The way up to the fort proper or upper and lower citadels is from the north side.  The path up the hill side, which is steep but with grass and soil left in Man y places, is almost destroyed.  About 150 feet up is the outer citadel built on a sort of shoulder of the hill and facing almost due west.  It contains two massive bastions of excellent masonry looking north-west and south-west so that guns planted on them could comMan d respectively the north and south gateways.  This citadel was connected with the main wall by a cross wall running across the whole breadth of the fort from east to west.  Its entrance lies close below that to the upper citadel.  A masonry curtain projects so as to hide the arch itself, which is not more than seven feet high by three broad, and has to be entered from due east.  On the south side the walls are carried right up to the scarp of the upper citadel and are some ten feet high, so that to take the lower citadel in rear or flank must have been difficult.  The upper citadel is above a vertical scarp some thirty feet high.  The entrance to it lies some thirty feet above that to the lower citadel, and is cut in the rock about eight feet wide.  There is a gateway of a pointed arch with the top fallen in and twenty odd steps leading up to it and ten more cut out of the rock, and winding up past the inside curtain on to the top.  The walls of this upper citadel are still in tolerable preservation.  They were originally about ten feet high and built of fair masonry.  There is a large turret on the south-west corner, evidently meant to comMan d the southern gate.  About ten yards to the east of this turret is a new looking building which was the headquarters or sadar.  Immediately east of this and below it is a great pit about thirty feet square and equally deep roughly cut in the rock and said by the people to be a dungeon.  Next to it on the south is a small pond evenly cut and lined with mortar used for storing water.  There are some remains of sepoys' houses, and, near the turret, a small stone wheel said to belong to a gun.  The outer walls east of the gates have bastions at every turn of the cliffs, and the masonry here is particularly strong and well preserved.  It would appear that attacks were dreaded chiefly from the plain below.  The assailants could either come up the spur towards the north entrance or they might attempt the spurs on the other side of the eastern ravine and attack the southern gateway.  Hence apparently the reason for strengthening the walls of the enceinte on this side.  After passing the southern gateway the assailants would be commanded Maan, Maharashtra from the lower citadel.  They Would then be encountered by the cross wall.  If that obstacle was overcome the besieged would run round the east side and into the two citadels.  The appearance from the fort of the plain in the north is most formidable.  The Panvan plateau completely commands Maan, Maharashtra and almost overhangs it.  The fort is believed to have been built by Shivaji to resist the Moghals whose attacks he must have dreaded from the plain below.  The Karkhanis or Superintendent of the fort was a Prabhu.  The fort garrison consisted of 200 Ramoshis, Mahars, and other hereditary Gadkaris besides sepoys.  It was surrendered in 1818 to Vitthal Pant Phadnis of the Raja of Satara left in charge of the town.  He detached 200 men to take possession, being part of a force then raised to protect the town from the enterprizes of Bajirav's garrisons then in the neighbourhood.  [Elphinstone in Pendhari and Maratha War Papers, 245.]

Horticultural Hall, Boston (1845): Horticultural Hall (1845-1860s) of Boston, Massachusetts, stood at no.40 School Street.  The Massachusetts Horticultural Society erected the building and used it as headquarters until 1860.  Made of granite, it measured "86 feet in length and 33 feet in width ... [with] a large hall for exhibitions, a library and business room, and convenient compartments for the sale of seeds, fruits, plants and flowers."  Among the tenants: "Journal of Agriculture"; Azell Bowditch's seed store; and Morris Brothers, Pell & Trowbridge minstrels.

Circus Maximus: The Circus Maximus (Latin for "greatest" or "largest circus", in Italian Circo Massimo) is an ancient Roman chariot racing stadium and mass entertainment venue located in Rome, Italy.  Situated in the valley between the Aventine and Palatine hills, it was the first and largest stadium in ancient Rome and its later Empire.  It measured 621 m (2,037 ft) in length and 118 m (387 ft) in width and could accommodate over 150,000 spectators.  In its fully developed form, it became the model for circuses throughout the Roman Empire.  The site is now a public park.

Miami Bridge: The Miami Bridge, also known as the McDaniel Memorial Bridge, is a new concrete girder bridge that was built to replace a cantilever through truss bridge over the Missouri River at Miami, Missouri between Saline County, Missouri and Carroll County, Missouri.  The Miami Bridge carries Route 41.  The Miami Bridge was built in 1939, and its deck was replaced in 1983 as part of a rehabilitation project.  The old bridge's main cantilever span was 474.7 feet, while the two anchor spans were each 415 feet in length, resulting in a total cantilever truss length of 1304.7 feet.  There were 11 approach spans, including four Warren deck truss spans, three on the northern approach and one on the southern approach.  All remaining approach spans were steel stringer (multi-beam/girder) spans.  Total bridge length including approach spans is 2,071.9 feet.  The bridge's deck width is 23.0 feet and it has vertical clearance of 16.5 feet.

Drag boat racing: Drag boat racing is a form of drag racing which takes place on water rather than land.  As with land-based drag racing, competitors race their vehicles for the lowest elapsed time (low ET) over a straight race course of a defined length.  There are three standard drag race course lengths, 660 feet (1/8 mile), 1,320 foot (1/4 mile), and the most common length, used in professional drag boat racing, 1,000 feet (3/16 mile plus 10 feet).  Unlike drag racing on land, which begins from a standing start, drag boat racing begins from a short rolling start to a point that cannot be passed until the green "start" light illuminates.  There are numerous categories of professional and sportsmen classes based on various engine configuration, fuel type, hull design and propulsion types.  The premier category of drag boat racing being the Top Fuel Hydroplane class which is the water based equivalent to Top Fuel Dragsters capable of covering the liquid quarter mile in less than four seconds with a top speed of around 260 mph (400 km/h).  The biggest event on the drag boat calendar is the LODBRS World Finals which takes place at Firebird Raceway Phoenix, Arizona.

Dicopomorpha echmepterygis: Dicopomorpha echmepterygis is a species of parasitic wasp in the family Mymaridae, which exhibits strong sexual dimorphism.  The males are blind, apterous, and their body length is only 40% that of females.  With a body length averaging 186 μm (for 8 specimens measured, which ranged from 139 to 240 μm), males of "D. echmepterygis" have the shortest body length of all known insects (smaller than certain species of "Paramecium" and amoeba, which are single-celled organisms).  The measured body length of a female was 550 μm.  The eggs and larvae of this parasitoid are considerably smaller than the adult.

Vicus Tuscus: Vicus Tuscus ("Etruscan Street" or "Tuscan Street") was an ancient street in the city of Rome, running southwest out of the Roman Forum between the Basilica Julia and the Temple of Castor and Pollux towards the Forum Boarium and Circus Maximus via the west side of the Palatine Hill and Velabrum.

Supporting paragraphs: Vicus Tuscus Circus Maximus
Answer: Circus Maximus