TDI Difficulty Index
The reference tool for assessing trail conditions and planning your rides.
The TDI (Trail Difficulty Index) focuses on the physical condition of the terrain rather than the rider's skill level. Inspired by community-driven trail difficulty systems, this standard ensures our crew speaks the same language.
Level 0 — Roads & Easy Gravel
Main roads and primary gravel axes. Low relief, no major incline. Practicable by any type of vehicle and driver.
Level 1 — Forest Trails
Forest paths and wide trails. Alternation of rolling sections and narrower passages. No critical elevation gain, ideal for getting started off-road.
Level 2 — Irregular Terrain
Potholes, light erosion, and small streams. Quad-style trails or logging roads. Requires constant attention to the line.
Level 3 — Technical
Technical trails with ruts, sustained climbs, and significant water crossings. Presence of rocks and roots. Knobby tires strongly recommended.
Level 4 — Committed
Complex passages: rock slabs, deep sand, and steep slopes. Frequent obstacles requiring excellent technical mastery and cool nerves.
Level 5 — Extreme
The ultimate off-road challenge. Complex obstacles, high physical endurance, and teamwork often indispensable. Reserved for expert riders on prepared machines.