Question: Douglas Park, New South Wales is near the highway that runs for how long?
Context: Calder Highway is a highway in Australia, linking Melbourne in Victoria, to Bendigo and Mildura and the Victoria/New South Wales border on the way to Broken Hill.  It continues through New South Wales to Broken Hill, Tibooburra and the New South Wales/Queensland border as the Silver City Highway, posted as route B79 as far as Broken Hill. The Hume Highway, inclusive of the sections now known as the Hume Freeway and Hume Motorway, is one of Australia's major inter-city national highways, running for 840 km between Melbourne in the southwest and Sydney in the northeast.  Upgrading of the route from Sydney's outskirts to Melbourne's outskirts to dual carriageway was completed on 7 August 2013. In New South Wales, Highway 1 is a 1351 km long route that crosses the state, from the Queensland/New South Wales border near Tweed Heads to the Victorian border near Timbillica.  It provides the main coastal route between Brisbane and Melbourne via Sydney .  Highway 1 continues around the rest of Australia, joining all mainland state capitals, and connecting major centres in Tasmania. Mungindi is a town and locality on the border of New South Wales (NSW) and Queensland, Australia.  The town is within Moree Plains Shire in New South Wales and within the Shire of Balonne in Queensland.  Within Queensland, the locality is split between the Shire of Balonne (the western part) and the Goondiwindi Region (eastern part).  It possesses a New South Wales postcode.  Mungindi sits on the Carnarvon Highway and straddles the Barwon River which is the border between New South Wales and Queensland.  At the 2011 census , Mungindi had a population of 738 on the New South Wales side.  The population on the Queensland side is now included in Thallon, which had a population, including the surrounding area, of 382. Charles Samuel Winning (17 July 1889 – 20 April 1967) was an Australian cricketer active from 1914 to 1920 who played for New South Wales and the Australian Imperial Force Touring XI.  He was born in Paddington, New South Wales and died in Newport, New South Wales.  He appeared in 28 first-class matches as a right-handed batsman who bowled right arm medium pace.  He scored 253 runs with a highest score of 30 and took 67 wickets with a best performance of six for 30.  Although he played for New South Wales at junior level before the First World War, he never took part in the Sheffield Shield and all his first-class appearances were for the Australian Imperial Force (AIF) Touring XI.  He retired after the AIF team disbanded. The Waterfall Way is a road in New South Wales, Australia.  It runs east-west from the Pacific Highway to the New England Highway at Armidale.  The route passes through some of New South Wales' most scenic countryside and has become well known as New South Wales best and Australia's third most beautiful tourist drive.  Seven national parks, of which three are listed as World Heritage Areas by UNESCO and form part of the Gondwana Rainforests of Australia (formerly the Central Eastern Rainforest Reserves), are located on or close to the route.  Dorrigo National Park encompasses the waterfalls that give the route its name.  It also provides one of the few road links between coastal and inland New South Wales, and is therefore more heavily trafficked than its condition might otherwise suggest. Martin Peter Faull (born 10 May 1968) is a former Australian cricketer, who regularly played for South Australia during the 1990s.  Born in Darwin, Northern Territory, Faull played cricket for South Australia at both under-16 and under-19 level, as well as for the state's Colts and Second XI sides.  Faull made his first-class debut for South Australia in February 1991 during the 1990–91 Sheffield Shield, in a match against New South Wales at the Adelaide Oval.  His first first-class half-century was made the following month, a score of 89 runs in the return match against New South Wales, batting at number three.  Faull played regularly at both Sheffield Shield and domestic one-day level throughout the rest of the decade, at first as a middle-order batsman, but later as an opening batsman, often opening alongside Greg Blewett or David Fitzgerald.  He was more successful at first-class level, with the 1996–97 season his best, where he scored 459 runs from eight matches (including six half-centuries).  Faull's only first-class century came during the 1997–98 season, a score of 103 runs in the second innings of a match against New South Wales, which followed a first innings score of 58 runs.  Overall, he played 30 first-class and nine List A matches over his career, with his final matches at both levels coming in the 1998–99 season.  In the SACA District competition, Faull played for the Tea Tree Gully District Cricket Club. Timothy John "Tim" Armstrong (born 26 September 1990) is an Australian cricketer currently contracted to the Perth Scorchers in the Big Bash League, having previously played at Australian domestic level with New South Wales, the Sydney Thunder, and Western Australia.  From Dubbo, New South Wales, Armstrong was from a strong cricketing family, representing New South Wales at under-17 and under-19 level, and going on to represent the Australian under-19 cricket team at both Test and One Day International level.  This included the 2010 ICC Under-19 Cricket World Cup, during which Armstrong scored 240 runs to lead Australia's tournament batting averages. Having played several matches as an all-rounder for the New South Wales under-23 side in the Futures League, Armstrong was selected in New South Wales' squad for the 2010–11 KFC Twenty20 Big Bash tournament, and played a single match in the tournament, against Victoria at the Melbourne Cricket Ground. Douglas Park is a town of the Macarthur Region in New South Wales, Australia in Wollondilly Shire.  It is near the Hume Highway, the F5 Freeway and on the Main Southern railway line.  Its station is served by NSW TrainLink's Southern Highlands Line.  It is about 80 km southwest of Sydney.  At the 2016 census , Douglas Park had a population of 1,362 people. Douglas Park railway station is located on the Main South line in New South Wales, Australia.  It serves the town of Douglas Park, opening on 6 September 1869 as Douglass Park being renamed on 31 July 1891.  It was relocated to its present site on 13 June 1892.
Answer: 840 km