ITRS https://validator.w3.org/feed/docs/rss2.html ITRS Basics: Level 1 Online Course Contact Us News ITRS Homepage Expanding the ITRS Framework with ITRS Hike & Run ITRS Landing Page Changelog (ITRS Hike & Run) ITRS Level 3 (CTR – Certified Trail Rater) Training Licensing conditions Hike and Run Documentation Download Newsletter Technical Difficulty Hike & Run Wilderness Exposure Endurance Hike & Run Endurance Bike Overview Bike Overview Hike & Run Endurance Requirements Calculator (bike) ITRS graphics package ITRS Bike Nutshell (Multilingual) Endurance Requirements Calculator (hike&run) Full Professional Documentation Download Christopher Riis Technical Difficulty Bike ITRS Presentation and fundraising pitch Marcos Prada Rodríguez Sergio Battistini ITRS Hike and Run Nutshell (Multilingual) Yaroslav Alpizar Changelog (ITRS Bike) Jan Tscherry Mark McClure Francesco Gozio ITRS 5.2 Update with new topics in wilderness and refinement of jump and green TTF rating Downloads Paolo Giovannini Stefania Oradini Swiss Bike Park Oberried and IMBA-Europe develop International Trail Rating System (ITRS) FAQ ITRS is featured in Trail Builder Magazine Navigating New Trails: Survey Reveals Impact of ITRS on Mountain Biking at Lake Garda Trail Rating Excellence in Garda Trentino Number of Certified Trail Raters is Growing Announcing the next CTR training and examination in Visp, CH Thomas Larsen Schmidt Hike and Run ITRS Documentation ITRS 5.0 update with expanded signage concept ITRS Certified Professionals About us