Question: Utah State Route 193 runs through the Air Force Base about how far north of Salt Lake City?
Context: State Route 186 (SR-186) is a state highway entirely within Salt Lake City, capital of the U.S. state of Utah.  It forms a quarter-beltway connecting US-89 and I-15 leading north from Salt Lake City to I-80 leading east; as such, it effectively forms the missing (non-freeway) quarter of the I-215 belt route around the city, though it does not directly connect to I-215 at the north end.  Despite this beltway role, the route passes through downtown Salt Lake City because downtown is built right up to the northern mountains surrounding City Creek Canyon.  The portion of the route connecting downtown to I-80 is a high-capacity street heavily used by commuters, especially those travelling to the University of Utah or between downtown and eastern neighborhoods, but the portion on Capitol Hill north of downtown is much narrower and has sharp turns around the Capitol grounds.  The roadway runs 9.34 mi along Victory Road, Columbus Street, 300 North, State Street, 400 South, 500 South, and Foothill Drive. East Bench in Salt Lake City, Utah is a relatively affluent and primarily residential neighborhood of Salt Lake City that lies at the base of the Wasatch Range and extends west to approximately 1500 East.  Foothill is the northern part of this area, divided by Interstate 80, and takes its name from the area's major traffic artery of Foothill Drive (State Route 186), which runs parallel to the base of the mountains and connects Interstate 80 with the University of Utah and downtown Salt Lake City.  The East Bench is bordered on the north by the Federal Heights neighborhood and on the south by the Traverse Mountains.  This neighborhood becomes increasingly affluent moving from west to east.  The University of Utah sits at the north end of this neighborhood.  Points of interest include the Hogle Zoo, Red Butte Garden and Arboretum, This Is The Place Heritage Park, Fort Douglas Military Museum and the Foothill Village Shopping Center.  Some notable residents and former residents include numerous authorities of The Church of Jesus Christ of Latter-day Saints, LDS speaker John Bytheway, and billionaire philanthropist Jon Huntsman, Sr.. Little Dell Reservoir is a reservoir in eastern Salt Lake County, Utah, United States, about 13 miles east of Salt Lake City in the western Wasatch Mountains.  It is located alongside Utah State Route 65, about 1 mile northeast of Interstate 80.  Little Dell is an impoundment on Dell Creek, but it also stores water diverted from Parleys Creek located immediately downstream.  The reservoir was constructed between 1987 and 1993 for drinking water supply and flood control as a joint venture between the U.S. Army Corps of Engineers, Metropolitan Water District of Salt Lake City and Salt Lake County.  The total cost of the project was US$63,864,932.00.  The reservoir and recreation area is operated and maintained by the Salt Lake City Department of Public Utilities. Utah State Route 176 was a state highway in entirely within the cities of Salt Lake City and South Salt Lake in Salt Lake County, Utah, United States.  It mainly functioned as an alternate route for US-89, US-91, and I-15 traffic that provided access to industrial areas of the two cities and avoided urban cross-traffic in Downtown Salt Lake City.  The original route followed 900 South west from State Street (Salt Lake County) (concurrent US-89 and US-91) to 300 West and then traveled north on 300 West to meet US-89 and US-91 again at South Temple (or, later, at North Temple).  The route was subsequently changed to follow 300 West only: it followed 300 West all the way from 3300 South (SR-171) to North Temple (traffic from either I-15 or State Street could reach the southern end along short stretches of SR-171). The Green Line is a light rail line on the Utah Transit Authority's (UTA) TRAX system in Salt Lake City, Utah, in the United States, operated by the Utah Transit Authority (UTA).  It opened on August 7, 2011, and runs between Airport Station at the Salt Lake City International Airport and West Valley Central Station in West Valley City (via Downtown Salt Lake City) serving a total of eighteen stations: thirteen in Salt Lake City, one in South Salt Lake, and four in West Valley City. The Utah Symphony is an American orchestra based in Salt Lake City, Utah.  The orchestra's principal venue is Abravanel Hall.  In addition to its Salt Lake City subscription concerts, the orchestra travels around the Intermountain West serving communities throughout Utah.  The orchestra accompanies the Utah Opera in four productions per year at Salt Lake's Capitol Theatre.  In addition, the Utah Symphony and Utah Opera have a summer residency at the Deer Valley Music Festival, located in Park City, Utah.  The orchestra receives funding from the Utah State Legislature for educational concerts. State Street is a wide 17.3 mi street in Salt Lake County, Utah leading almost straight south from the steps of the Utah State Capitol Building, through Salt Lake City (including Downtown Salt Lake City), South Salt Lake, western Millcreek Township, Murray (including the Murray Downtown Historic District), eastern Midvale, Sandy (including the Sandy Historic District and Downtown Sandy), and northwestern Draper.  Because it follows the most direct route from downtown Salt Lake City to the Point of the Mountain pass to Utah County, it was the undisputed main road south from Salt Lake City until Interstate 15 was built to the west (but closely paralleling it).  It retains the US Highway 89 designation for all but the northernmost seven blocks (which are part of State Route 186 instead) despite I-15's proximity.  Due to its history as a route for long-distance travel, travel within the Wasatch Front region, and travel between the cities along the east side of the Jordan River, it has attracted a wide variety of retail and service businesses along its entire length, creating a nearly continuous commercial axis for the Salt Lake Valley. Hill Air Force Base (IATA: HIF, ICAO: KHIF, FAA LID: HIF) is a major U.S. Air Force base located in northern Utah, just south of the city of Ogden, and near the towns of Clearfield, Riverdale, Roy, Sunset, and Layton.  It is about 30 mi north of Salt Lake City.  The base was named in honor of Major Ployer Peter Hill of the U.S. Army Air Corps, who died test-flying a prototype of the B-17 Flying Fortress bomber.  In this decade Hill AFB is still the sixth-largest employer in the state of Utah, and the third-largest one excluding the State Government and Higher Education employers. Originally, the Salt Lake Valley was inhabited by the Shoshone, Paiute, Goshute and Ute Native American tribes.  At the time of the founding of Salt Lake City the valley was within the territory of the Northwestern Shoshone, who had their seasonal camps along streams within the valley and in adjacent valleys.  One of the local Shoshone tribes, the Western Goshute tribe, referred to the Great Salt Lake as "Pi'a-pa", meaning "big water", or "Ti'tsa-pa", meaning "bad water".  The land was treated by the United States as public domain; no aboriginal title by the Northwestern Shoshone was ever recognized by the United States or extinguished by treaty with the United States.  Father Silvestre Vélez de Escalante, a Spanish Franciscan missionary is considered the first European explorer in the area in 1776, but only came as far north as Utah valley (Provo), some 60 miles south of the Salt Lake City area.  The first US visitor to see the Salt Lake area was John Chugg in 1824.  U.S. Army officer John C. Frémont surveyed the Great Salt Lake and the Salt Lake Valley in 1843 and 1845.  The Donner Party, a group of ill-fated pioneers, traveled through the Great Salt Lake Valley a year before the Mormon pioneers.  This group had spent weeks traversing difficult terrain and brush, cutting a road through the Wasatch Mountains, coming through Emigration canyon into the Salt Lake Valley on August 12, 1846.  This same path would be used by the vanguard company of Mormon pioneers, and for many years after that by those following them to Salt Lake. State Route 193 is an east and west highway located completely in Davis County, Utah that begins at SR-126, runs through the south entrance of Hill Air Force Base and ends at US-89.
Answer: 30 mi