SlackAttack – Slackline Crew Bern was founded in Bern in 2009 and is the oldest active slackline association in Switzerland with over 60 members. In 2022 SLACKATTACK Thun was founded as its own association, also represented on this website.


  • The promotion of the acceptance of slacklining as an independent sport.
  • The organisation and realisation of slackline festivals.
  • To communicate the fun as well as the benefits and risks of slacklining in all its facets and variants.
  • The targeted education on the topic of gear use and maintenance, as well as on the topic of tree protection and safety.

Athletes and Artists

Athletes and artists from and around SLACKATTACK bring in new ideas and projects; plan exciting shows and workshops.



The athletes always dream of fascinating projects in the mountains and make them happen



The artists mix slacklining with all sorts of fascinating things from the circus world



These experiences and the collected knowledge are passed on in our jams and workshops

Board Bern

Isabelle Schopper



Eva Ammann


Carlos Sampaio



Simon Hiller

Web and everything digital


Pascal Jetzer

Metal working projects

Thomas Buckingham

Do-it-all who does it all

Manuel Ruch

Post man

Nina Ammann

Bern City Slack Organiser

Kevin Mönch

Storage space janitor

Mélanie Béguelin


Board Thun

Dyan Enghard

Does his best to enrich Thun with as many slacklines as possible, on which he likes to perform wild tricks. Coordinates gear purchases and helps with events.

Marcial Sommer


Carlos Sampaio

Treasurer. Looks after the finances when he is not playing sports, programming or just enjoying life.

Honorary Members

Marc Thompson

Kaspar Langenegger


Our Honorary Members:

Marc Thompson †2023 (President 2017-2023, Bern City Slack Organiser&Speaker)
Kaspar Langenegger †2020 (Founding Member, Bern City Slack Organiser)
Benj Herren (Vize President, Bern City Slack Organiser)
Thirza Ingold (Founding Member)
Reno Moser (Founding Member, Bern City Slack Organiser)
Bernhard Witz (Founding Member and Highline Pioneer)
Reto Schor (Founding Member)
Yves Huber (Founding Member)
Fabian Wyss (Founding Member, Endlessline Inventor)
Fabian Gutscher (Soundline Inventor)
Thirza Ingold (Founding Member)
Betina Tanner (Volunteer)
Juderico Friedli (Founding Member)
Reto Grätzer (Founding Member)
Jonas Meier (Founding Member)
Matthias Marti (Founding Member)
Barbara Rickli (Founding Member)
Olivier Schertenleib (Founding Member, Videoproductions)
Kaspar Burkhalter (Founding Member)
Alexis Gonin (Bern City Slack Organiser)
Thomas Ferrazzini (Volunteer)
Andreas Ferrazzini (Board)
Olivia Nyffeler (Volunteer)
Simon Egger (Volunteer)
Rolf Rolli (Volunteer)
Rainer von Padawanfilms (Drohnenpilot)
Andi Erschen (Graphic Designer, Bern City Slack Flyer)
Florian jakober (Graphic Designer, Slackattack Logo)
Elias Hodel (Graphic Designer)
Michael Mazur (Website)
HP Gosteli (Heustock)