Question: How long is the bicycle trail that is near the Melbourne Zoo?

full_context: Document 1: Naypyidaw Zoological Gardens: The Naypyidaw Zoological Gardens (Burmese: နေပြည်တော် တိရိစ္ဆာန် ဥယျာဉ် , ] ) located in Naypyidaw is the largest zoo in South East Asia. Located on the Yangon-Mandalay highway about 250 miles (400 km) north of Yangon, the 612-acre (247-hectare) zoo opened its doors on Myanmar's Armed Forces Day (27 March) in 2008 with about 420 animals trucked in from the Yangon Zoological Gardens.
Document 2: City Circle tram: The City Circle is a zero-fare tram running around the Melbourne City Centre in Australia. Aimed mainly at tourists, the route passes many Melbourne attractions while running along the city centre's outermost thoroughfares, as well as the developing Docklands waterfront precinct. It operates in both clockwise and anti-clockwise direction.
Document 3: Shambala Animal Kingdom: Shambala Animal Kingdom was a 53 ha zoological park outside Kuranda, Queensland, Australia. The park was privately owned. It was formerly known as "Cairns Wildlife Safari Reserve", "Mareeba Wild Animal Park" and "Out of Africa Reserve". After being purchased by a Sydney lawyer, the zoo was renamed "Shambala Animal Kingdom". The zoo was closed in April 2013 citing financial reasons.
Document 4: Singapore Zoo: The Singapore Zoo, formerly known as the Singapore Zoological Gardens and commonly known locally as the Mandai Zoo, occupies 28 ha on the margins of Upper Seletar Reservoir within Singapore's heavily forested central catchment area. The zoo was built at a cost of $9 million granted by the government of Singapore and opened on 27 June 1973. It is operated by Wildlife Reserves Singapore, who also manage the neighbouring Night Safari, River Safari and the Jurong BirdPark. There are about 315 species of animal in the zoo, of which some 16 percent are considered to be threatened species. The zoo attracts 1.7 million visitors each year.
Document 5: Melbourne: Melbourne ( ) is the capital and most populous city of the Australian state of Victoria, and the second-most populous city in Australia and Oceania. The name "Melbourne" covers an urban agglomeration spanning 2664 km2 , which comprises the broader metropolitan area, as well as being the common name for its city centre. The metropolis is located on the large natural bay of Port Phillip and expands into the hinterlands towards the Dandenong and Macedon mountain ranges, Mornington Peninsula and Yarra Valley. Melbourne consists of 31 municipalities. It has a population of 4,641,636 as of 2016 , and its inhabitants are called Melburnians.
Document 6: Capital City Trail: The Capital City Trail is a shared use path for cyclists and pedestrians, which circles the Melbourne city centre and some inner eastern and northern suburbs of Melbourne, Victoria, Australia. It is 29km in length, and mostly consists of sections of other trails, such as the Merri Creek Trail, Main Yarra Trail, Moonee Ponds Creek Trail and Inner Circle Rail Trail.
Document 7: Blind Creek Trail: The Blind Creek Trail, in the outer eastern suburbs of Melbourne, in the Australian state of Victoria, is a shared-use path for cyclists and pedestrians, which follows the Blind Creek from the Dandenong Creek Trail in Wantirna South to the Ringwood - Belgrave Rail Trail in Boronia.
Document 8: Melbourne City Centre: Melbourne City Centre (sometimes referred to as "Central City", and colloquially known as simply "The City" or "The CBD") is an area of Melbourne, Victoria, Australia. It is the area in which Melbourne was established in 1835, by John Batman and John Pascoe Fawkner, and its boundaries are defined by the Government of Victoria's "Melbourne Planning Scheme". Today it comprises the two oldest areas of Melbourne; the Hoddle Grid and Queen Victoria Market, as well as sections of the redeveloped areas of Docklands and Southbank/South Wharf. It is not to be confused with the larger local government area of the City of Melbourne.
Document 9: Brevard Zoo: Brevard Zoo is a 75 acre not-for-profit facility located in Melbourne, Florida, United States that is home to more than 650 animals representing more than 165 species from Florida, South America, Africa, Asia, and Australia. The zoo features animal feedings, kayak tours, paddle boats in the wetlands, behind-the-scene tours, and a train ride. It also has the attraction Treetop Trek. Brevard Zoo is a not-for-profit organization accredited by the Association of Zoos and Aquariums.
Document 10: Dandenong Creek Trail: The Dandenong Creek Trail is a shared use path for cyclists and pedestrians, which follows Dandenong Creek through the outer eastern and south-eastern suburbs of Melbourne, Victoria, Australia.
Document 11: Inner Circle railway line: The Inner Circle was a steam era suburban railway line (later electrified) in Melbourne, Australia. It served the inner-northern suburbs of Parkville, Carlton North, Fitzroy North, and Fitzroy. At its closure, it ran from Royal Park station on the Upfield line (Melway map ref: 29 F11) in the west, to a triangular junction with Rushall and Merri stations on today's South Morang line in the east. (Melway map ref: 30 D11) There was also a branch line to Fitzroy that opened at the same time.
Document 12: Werribee Open Range Zoo: Werribee Open Range Zoo is an African themed zoo in Werribee, about 32 km south-west of Melbourne, Victoria, Australia. It is part of the Zoological Parks and Gardens Board or 'Zoos Victoria' which also includes Melbourne Zoo and Healesville Sanctuary. It is situated on approximately 225 ha and is located on the Werribee River in Werribee Park, adjacent to the Werribee Mansion. It was originally agistment land to the Melbourne Zoo.
Document 13: Adelaide Zoo: Adelaide Zoo is Australia's second oldest zoo (after Melbourne Zoo), and like other leading zoos in Australia, including Melbourne Zoo, Taronga Zoo, and Perth Zoo it is operated on a non-profit basis. It is located in the parklands just north of the city centre of Adelaide, South Australia. It is administered by the Royal Zoological Society of South Australia Incorporated (trading as Zoos SA) which is a full institutional member of the Zoo and Aquarium Association (ZAA) and the World Association of Zoos and Aquariums (WAZA). and which also administers the Monarto Zoo near Murray Bridge.
Document 14: Coast to Vines Rail Trail: The Coast to Vines rail trail open to pedestrians and cyclists, runs for 34 km through the southern suburbs of Adelaide from Marino to Willunga. Much of the trail has been constructed on the disused Willunga railway line.
Document 15: Melbourne Zoo: The Royal Melbourne Zoological Gardens, commonly known as the Melbourne Zoo, contains more than 320 animal species from Australia and around the world. The zoo is 4 km north of the centre of Melbourne. It is accessible via Royal Park station on the Upfield railway line, and is also accessible via tram routes 58 and 19, as well as by bicycle on the Capital City Trail. Bicycles are not allowed inside the zoo itself.
ground_truth: 29km