Question: When as the Stonehenge Cursus built?
About the article "Stonehenge", section "Before the monument (8000 BC forward)".

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The Stonehenge Cursus (sometimes known as the Greater Cursus) is a large Neolithic cursus monument next to Stonehenge in Wiltshire, England.
It is roughly long and between and wide.
Excavations in 2007 dated the construction of the earthwork to between 3630 and 3375 BCE.
This makes the monument several hundred years older than the earliest phase of Stonehenge in 3000 BC.
The cursus is part of the National Trust's Stonehenge Landscape property. 
 Stonehenge Stonehenge Avenue Stonehenge Cursus The Lesser Cursus Durrington Walls Woodhenge Coneybury Henge (a henge that has been ploughed flat) King Barrow Ridge Winterbourne Stoke Barrows Normanton Down Barrows, including Bush Barrow Vespasian's Camp Robin Hood's Ball (an associated monument located just north of the WHS boundary) West Amesbury Henge, also known as Bluestonehenge Stonehenge Landscape Stonehenge New Henge  
The Stonehenge Cursus is entirely located in the Stonehenge Landscape property's open access land and is therefore free to visit.
It is located 700m north of Stonehenge and is easily reached via the bridleway heading north from Stonehenge car park.
The Lesser Cursus is on arable land, although a permissive path goes near it.
However, as it is only visible as a cropmark, there is nothing to see.
Amesbury 42 long barrow is under a bridleway at the far eastern end of the Greater Cursus. 
Cursus comes from the Latin for 'racecourse'.
Early antiquarians who first discovered cursus believed them to be Roman racing tracks. 
Much of Larkhill sits within the Stonehenge World Heritage Site, an area rich in Neolithic and Bronze Age monuments.
Several long barrows and round barrow groups are located within the settlement.
Robin Hood's Ball, the Stonehenge Cursus and the Lesser Cursus lie close to the garrison.
The first modern settlement came in 1899 when a tented camp was established for units training on an area of Salisbury Plain that became known as Larkhill range.
Units were accommodated in large official campsite areas whilst training throughout the summer.
As Larkhill range was specifically set aside for artillery practice, many of the units were artillery batteries.
In 1914, the first permanent huts were built on the down.
During World War I, 34 battalion sized hutted garrisons were built for use by all different types of military forces.
A light military railway line was built from the established Amesbury–Bulford line, to carry troops to Larkhill and on to an aerodrome at Stonehenge.
After the war, the garrison became an artillery domain and in 1919 the Royal School of Artillery was established there.
The light railway was lifted and Stonehenge Aerodrome was closed.
However, several other new facilities were established in the interwar years, including a military hospital, married quarters at Strangways, a NAAFI service and military churches.
The famed British Ordnance QF 25 pounder was developed by the school of artillery shortly before the outbreak of the Second World War.
During World War II, the garrison was extended again, although primarily for artillery units.
The 21st Independent Parachute Company of the 1st Airborne Division was also formed there.
After WWII, many of the hutted buildings were replaced with modern structures.
The Royal School of Artillery’s garrison was rebuilt and permanently established at the site.
A new event was started in 1962 to showcase the military’s artillery technology — originally named Larkhill Day, it evolved into Artillery Day in 1970.