Background Before Longacres, two other racetracks had previously existed within the general vicinity of Seattle. The first, Seattle Race Course, was built in 1869 by Seattle saloon and brothel owner John Pinnell on land rented from pioneer Diana Collins; later known as the Seattle Driving Park after a hiatus from 1878 to 1883, it closed in 1892 to make way for development on the land. The racetrack held its first program on August 18; Royalty won the first running of its marquee event, the Seattle Derby, on August 23, winning a $1,000 purse before 5,000 spectators. Despite the racetrack's success leading it to host the region's first automobile race in 1905, it met its demise after the 1908 horse-racing season when the
Washington State Legislature abolished gambling on horse races in February 1909 with the support of then-
Governor Albert E. Mead, with the ban taking effect on June 12. The site of the racetrack was eventually redeveloped in 1928 as
Boeing Field, Seattle's first municipal airport. Gottstein subsequently formed the Washington Jockey Club with architect
B. Marcus Priteca and four other partners for the purposes of owning and operating a racetrack, with the club being issued a permit by the state commission for a one-mile track on June 20, 1933. The club intended to construct the racetrack on the site of the Mountain View Golf Club, a
golf course situated along an old section of the
Pacific Highway between Renton Junction and
Orillia. and convinced the club to negotiate with them; both sides agreed to a 10-year lease three days later. As a sign of gratitude, Gottstein gave a small part of the property to Magnuson, who became an additional investor in the racetrack. With the racetrack's site confirmed, construction commenced immediately. Seeking an event that would bring grandeur to the racetrack, the Washington Jockey Club announced a mile race with an initial purse of $10,000 on April 14, 1935. The race, later known as the
Longacres Mile Handicap, first took place on August 24; longshot Coldwater finished ahead of favored contender Biff by a nose to pull off the
upset and win the title in front of 12,000 spectators. The club then introduced the Washington Futurity (later renamed in 1971 as the
Gottstein Futurity) in 1940 with an initial purse of $1,200 to encourage the breeding of Thoroughbreds within the state; Campus Fusser won the first running on August 18. Edris became increasingly skeptical of the racetrack's financial success as the Great Depression lingered on; Gottstein had lost millions of dollars attempting to maintain the unprofitable racetrack. Gottstein eventually established Broadacres in 1948 to serve as owner of the family's properties, including the racetrack. During
World War II, the Washington Jockey Club was under pressure from the state commission to cancel all upcoming racing seasons at Longacres for the duration of the war. After Gottstein refused then-Governor
Arthur B. Langlie's request to cancel the 1942 season, the state commission denied the club a license for one the following year; it was the only time in the racetrack's history where it did not hold a season. it also placed
anti-aircraft guns at the site to protect the
nearby Boeing factory. Around the same time, gambling opportunists began to challenge the monopoly horse racing held on legal gambling in the state, with proponents of
Greyhound racing among them; all attempts at its legalization between 1969 and 1975 were opposed with the help of horse-racing interests. However, with illegal gambling rampant throughout
King County, the state legislature permitted bingo and raffles in 1971. The legislature then passed the Gambling Act (also known as House Bill 711) in 1973, which established the
Washington State Gambling Commission to supervise legalized gambling activities within the state. Nevertheless, Longacres did not face serious pressure in the gambling space until the state legislature created a
state lottery in 1982, after which point the racetrack began losing business to the lottery. Meanwhile, the racetrack faced competition in the entertainment space with the arrival of
professional sports teams in Seattle, having to compete for media coverage with the likes of the
NBA's
SuperSonics, the
NFL's
Seahawks, and
MLB's
Mariners. Longacres was successful such that it underwent expansions in 1972, 1974, 1978, 1982, and 1984; however, with the competition building up, attendance at the racetrack began to decline in 1984. Attempts to stem the decline in the face of rising operating costs were made to no avail; in 1986, it instituted night racing on April 2 with the installation of lights, After three years of continuous decline, the management at Longacres decided to enact a turnaround plan out of desperation in May 1987, intent on making the experience at the racetrack more family-friendly and approachable to casual spectators; this included training on betting and promotions that made the races secondary attractions. The racetrack even embraced its entertainment rivals, converting a restaurant into a room full of televisions intended for watching the local professional sports teams as well as the horse races. Furthermore, the area surrounding the racetrack had radically changed since its opening. When the racetrack first opened, it was in a rural area far from Seattle, but rapid development throughout its existence had resulted in the racetrack sitting on prime real estate with its proximity to
Seattle–Tacoma International Airport and
Interstates 5 and
405. Attempting to take advantage of a 1970 law giving
tax breaks to farm and forest land owners based on their actual use, the racetrack's owners applied for
open-space classification in October 1972 and in May 1973; they were denied both times. Eventually, in May 1979, the county's then-assessor, Harley Hoppe, designated of
stable land as
farmland against the recommendation of his staff; this resulted in the reduction of the land's assessed value from $1.4 million to $299,000 and saved the racetrack's owners about $26,000 in taxes by May 1983. However, Hoppe's successor, Ruthe Ridder, repealed the classification in January 1984 under an order from the Washington State Department of Revenue, requiring the owners to pay $31,000 in
back taxes. With its land becoming more valuable than its revenue, the Alhadeff family ultimately decided to sell the property.
Closure and redevelopment On September 27, 1990, Kenneth Alhadeff announced that Broadacres had sold the Longacres site to
Boeing; the company reportedly paid $80 million in the sale. An investor group led by Mark Dedomenico Sr.—a Thoroughbred owner,
heart surgeon, and former overseer of the
Golden Grain Macaroni Company—offered to buy Longacres from the Alhadeffs; the group never received a response. The racetrack was set to close on December 31, following the conclusion of a contract showing televised races from
Playfair Race Course in
Spokane and
Yakima Meadows in
Yakima, as the Alhadeffs had declined an offer from Boeing to operate it for up to three years as part of a transitional period. However, Boeing eventually reached an agreement with the non-profit Emerald Racing Association to operate the racetrack for two more years; the latter paid annual fees significantly below
fair market value during that time. Until that point, Longacres had been the longest continuously running track on the West Coast. The final Longacres Mile Handicap at the track, the 57th one overall, occurred on August 23, 1992; Bolulight prevailed over Ibero by a half-length to win the $293,800 purse in front of 17,182 spectators. The race was subsequently held at Yakima Meadows from 1993 to 1995 before moving to
Emerald Downs in
Auburn when that racetrack opened in 1996 as the new home of horse racing in Western Washington. Meanwhile, on May 10, 1991, Boeing announced their intent to build an
office park at the Longacres site, planning to develop the site over a 12-year period. However, the company shelved much of the plans for the park in November aside from a $70 million, customer-training center located on a corner of the property; the center opened in 1993. Boeing subsequently leased of the training center, later known as the North Building, to
Alaska Airlines for
flight training. Undertaking heavy cost-cutting measures due to the
COVID-19 pandemic and its resulting
impact on aviation, Boeing mulled a potential sale of the property in October 2020, with the Commercial Airplanes division potentially moving to offices on the
Plant 2 site or at the
Everett plant. Boeing eventually ordered a clear-out of the campus in February 2021, officially listing it for sale on April 6 with no succeeding headquarters location identified; the company cited the viability of
remote work in its decision. The company eventually sold it for $100 million to Seattle-based
Unico Properties, who announced the transaction in a
news release on December 17; Unico stated their intent for
transit-oriented development on the site. On February 16, 2022,
Seattle Sounders FC announced that it had partnered with Unico to renovate the headquarters building (also known as the South Building) as its new headquarters and training facility; prior to the announcement, the former was located in Seattle's
Pioneer Square before the COVID-19 pandemic, while the latter was at
Starfire Sports in nearby
Tukwila. Among the changes brought about by the renovation was the installation of four full-sized
soccer fields and separate locker and weight rooms for the team's
academy and
Tacoma Defiance reserve team; the latter were designed
without adornments like the ones for the first team to incentivize such developmental players to work towards a promotion to the first-team roster. The renovated complex was officially unveiled on February 13, 2024, less than two weeks before the start of the
2024 season; the facility was named the
Providence Swedish Performance Center & Clubhouse two months later when the team's then-current jersey sponsor,
Providence Health & Services, acquired its
naming rights. Concurrent with the Sounders deal, Unico had also reached a deal with
Alaska Airlines in March 2023 to expand the latter's presence in the North Building to while extending the lease by 20 years. The remodeled North Building opened on January 29, 2026, replacing five facilities near the airline's headquarters in
SeaTac; it includes several
flight simulators, mockups of airline facilities, and inflated
evacuation slides for training. ==Notes==