Slacklining refers to the act of walking or balancing along a suspended length of flat webbing that is tensioned between two anchors.

Slacklines differ from tightwires and tightropes in the type of material used and the amount of tension applied during use.

Slacklines are tensioned significantly less than tightropes or tightwires in order to create a dynamic line which will stretch and bounce like a long and narrow trampoline. Tension can be adjusted to suit the user, and different webbing may be used in various circumstances.

Slacklining is popular due to its simplicity and versatility – it can be used in various environments with few components.

Longest highline

In Aiglun, France, on Tuesday, April 19, the highliner and balance athlete Nathan Paulin, along with Danny Menšík, set a new record for the longest slackline ever – 1020m. The highline was 600 meters high at its highest point.

Longest free solo highline

The longest free solo highline was walked in Squamish, BC on August 2, 2015. At a length of 64 metres (210 ft), ‘The Itus’ was walked one way leashless by Spencer Seabrooke

Highest slackline

The highest slackline on record was walked by Christian Schou on August 3, 2006 at Kjerag in Rogaland, Norway. The slackline was 1,000 metres (3,281 ft) high.

The current record for walking the highest urban highline is held by professional slackliner Reinhard Kleindl of Austria, who walked a high wire at a height of 607 feet (185 m) on May 25, 2013 in front of the Messeturm Fair Tower in Frankfurt, Germany.