Question: How long is the course of the road race that Bob Hodges won in 1979 ?

full_context: Document 1: The Bay Run: The Bay Run is a 7 km shared use path for cyclists and pedestrians that encircles much of Iron Cove and is located in the inner-western suburbs of Sydney, New South Wales, Australia. The Bay Run is particularly popular with joggers, walkers, roller skaters and cyclists who enjoy the pleasant waterside scenery whilst participating in exercise. The shared path passes through the suburbs of Rozelle , Lilyfield , Haberfield , Five Dock and Drummoyne .
Document 2: Marina Green: The Marina Green in San Francisco, California, is a 74 acre expanse of grass between Fort Mason and the Presidio. It is adjacent to San Francisco Bay, and this location provides good views of the Golden Gate Bridge, Angel Island, Alcatraz Island, and parts of Marin County. Houses built mostly in the 1920s and 1930s line Marina Boulevard, the southern boundary of the Marina Green. Many of these houses have large bay windows, and Herb Caen, the late San Francisco newspaper columnist, often made references to the immaculate furnishings behind these windows. In the past, a railroad track along the southern edge of the Marina Green allowed the San Francisco Belt Railroad to serve the Presidio. Adjacent to the Marina Green is a marina, home to the St. Francis Yacht Club and the Golden Gate Yacht Club. The San Francisco Bay Trail runs through the green.
Document 3: Alberto Salazar: Alberto Salazar (born August 7, 1958) is an American track coach and former world-class long-distance runner. Born in Cuba, Salazar immigrated to the United States as a child with his family. They moved to Manchester, Connecticut and then to Wayland, Massachusetts, where Salazar competed in track and field in high school. Salazar is best known for his performances in the New York City Marathon in the early 1980s and his 1982 Boston Marathon victory known as the "Duel in the Sun." He held American track records of 13:11.93 for 5,000 m (July 6, 1982 – Stockholm) and 27:25.61 for 10,000 m – (June 26, 1982 – Oslo).
Document 4: Hal Koerner: Hal Koerner (born January 23, 1976 in Morgantown, WV) is an American distance runner specializing in ultramarathon running. He is the owner of a specialty running store, Rogue Valley Runners, located in the mountainous Southern Oregon town of Ashland. He is one of the subjects of JB Benna's feature-length documentary "Unbreakable: The Western States 100".
Document 5: San Francisco Bay Area Water Trail: The San Francisco Bay Area Water Trail is a growing network of launch and landing sites that allow people in non-motorized small boats and beachable sail craft such as kayaks, canoes, dragon boats, stand up paddle and windsurf boards, to safely enjoy San Francisco Bay through single and multiple-day trips. The Water Trail is enhancing Bay Area communities’ connections to the Bay and creating new linkages to existing shoreline open spaces and other regional trails as well as increasing education about personal safety, navigational safety, and appropriate boating behavior near sensitive wildlife species and shoreline habitat. The Water Trail is implemented under the leadership of the California Coastal Conservancy in close collaboration with the Association of Bay Area Governments, the San Francisco Bay Conservation and Development Commission, and the California Department of Boating and Waterways.
Document 6: Bob Larsen: Bob Larsen (born c. 1939) is a Hall of Fame Track and field athletics coach, known largely for coaching distance runners, though he has had success coaching across a full range of events. Larsen is currently a coach at the Mammoth Lakes Mammoth Track Club high altitude training camp. His most notable athlete is Mebrahtom Keflezighi, the 2004 Olympic Silver medalist in the Marathon, an accomplishment that ended a 20-year drought in United States distance running medals at the Olympic level (28 years for male athletes). Building on that success, Keflezighi won the men's division of the 2009 New York Marathon, the first American athlete to accomplish that feat since Alberto Salazar did it 27 years before in 1982, and the 2014 Boston Marathon. Previous to that Larsen coached the UCLA Cross Country and then Track teams between 1979 and his retirement in 1999.
Document 7: Knee Knackering North Shore Trail Run: The Knee Knackering North Shore Trail Run, also known as the Knee Knacker, was established in 1989 and is a 50 km ultramarathon trail run in that takes place in British Columbia, in the Greater Vancouver area on the second Saturday of July each year. Due to a municipality's environmental concerns, the field is limited to 200 runners. Because of the race's popularity, the entrants are selected by lottery. The route, comprising about 2,600 m of vertical climb and descent, generally follows the Baden-Powell Trail, and traverses the North Shore Mountains from Horseshoe Bay to Deep Cove.
Document 8: Steve Prefontaine: Steve Roland "Pre" Prefontaine (January 25, 1951 – May 30, 1975) was an American middle and long-distance runner who competed in the 1972 Olympics. Prefontaine once held the American record in seven different distance track events from the 2,000 meters to the 10,000 meters. Prefontaine died in May 1975 at the age of 24 in an automobile accident in Eugene, Oregon.
Document 9: Bay to Breakers: Bay to Breakers is an annual footrace in San Francisco, California on the third Sunday of May. The phrase "Bay to Breakers" reflects the fact that the race starts at the northeast end of the downtown area a few blocks from The Embarcadero (adjacent to San Francisco Bay) and runs west through the city to finish at the Great Highway (adjacent to the Pacific coast, where breakers crash onto Ocean Beach). The complete course is 7.46 mi long.
Document 10: Meb Keflezighi: Mebrahtom "Meb" Keflezighi ( ; Ge'ez: መብራህቶም ክፍልእዝጊ, "Mebrāhtōm Kifl'izgī"; born May 5, 1975) is an Eritrean-born American long distance runner. He is the 2004 Olympic silver medalist in the marathon and finished in fourth place in the 2012 Summer Olympics. He won the 2009 New York City Marathon on November 1, 2009, and the 2014 Boston Marathon on April 21, 2014, becoming the first American man to win each race since 1982 and 1983, respectively. Keflezighi is a graduate of UCLA where he won four NCAA championships competing for the UCLA Bruins track and field team. He came in fourth in the 2014 New York City Marathon on November 2, 2014, eighth in the 2015 Boston Marathon on April 20, 2015 and second in the 2016 U.S. Olympic Team Trials to qualify for the 2016 Summer Olympics.
Document 11: Tim Broe: Tim Broe (born June 20, 1977 in Peoria, Illinois) is a retired American long-distance runner. He reached the 5000 meters final at the 2004 Summer Olympics finishing eleventh. Tim competed collegiately for the University of Alabama where his 3,000m steeplechase record still stands. He is a cross country running and track and field coach. In his second year of coaching Wellesley High School boys cross country, the team won the MIAA Division State Cross Country Championships
Document 12: Bayshore Boulevard: Bayshore Boulevard is a waterfront road on Hillsborough Bay in South Tampa, Florida. Located south of downtown Tampa, its sidewalk, claimed to be the longest continuous sidewalk in the world at 4.5 mi long, is 10 ft wide and is widely used for recreation and exercise. However, the longest continuous sidewalk in the world is actually the Rambla of Montevideo, which is over 13.7 miles (22.2 km) long and that borders the entire coast of Montevideo, Uruguay, along the Río de la Plata. The 3 mi bike lane, a linear park, and the Bayshore Greenway Trail provide scenic views of urban Tampa and the water. Many large and historic homes line the road, as well as business including the Colonnade (restaurant), a historic seafood restaurant established in 1935. The Gasparilla Children's parade is held on a section of the road.
Document 13: Pat Porter: Patrick ("Pat") Ralph Porter (May 31, 1959 – July 26, 2012) was an American distance runner. Born in Wadena, Minnesota, he graduated from Adams State in 1982 with a degree in marketing, after which he became one of the most dominant U.S. distance runners of the 1980s. Porter was a two time U.S. Olympian, running the 10000 meters at the 1984 and 1988 Olympic Games. In 1983 he set the World Record for a road 10K at 27:31.8. He won the silver medal at the 1985 IAAF World Cup in Canberra, Australia, getting nipped at the tape by Ethiopia's Wodajo Bulti by six hundredths of a second.
Document 14: Great Chesapeake Bay Schooner Race: The Great Chesapeake Bay Schooner Race (GCBSR) is an annual schooner race established in 1990 that takes place on the Chesapeake Bay. The race—held in October of each year—begins just south of the Chesapeake Bay Bridge near Annapolis, Maryland, and ends at Thimble Shoal Light north of the Hampton Roads channel, covering 127 nmi . Pre- and post-race activities take place in Baltimore, Maryland, and Portsmouth, Virginia, respectively. Proceeds from the race support Chesapeake Bay education and preservation projects. The current time to beat is 11 hours, 18 minutes, 53 seconds and was set in 2007 by the schooner "Virginia".
Document 15: Bob Hodge (athlete): Robert J. "Bob" Hodge (born 1955) is an American distance runner who came third in the 1979 Boston Marathon with a time of 2:12:30. He has also won the Mount Washington Road Race (1976–1980, 1985 and 1987), the Bay to Breakers Road Race in San Francisco (1979), and the Beppu-Ōita Marathon in Japan (1982). His personal best time was his second-place finish at the 1980 Nike OTC Marathon in Eugene, OR at 2:10:59.
ground_truth: 7.46 mi long.