TREKKING GRADES
| Scale | Activiity | Trail | Terrain | Requirements |
| T1 | Hiking | Trail well cleared | Area flat or slightly sloped, no fall hazard | None |
| T2 | Mountain Hiking | Trail with continuous line and balanced ascent | Terrain partially steep, fall hazard possible | Hiking shoes recommended Some sure footedness |
| T3 | Demanding Mountain Hiking | Exposed sites may be secured with ropes or chains, possible need to use hands for balance | Partly exposed sites with fall hazard, scree, pathless jagged rocks | Well sure-footed Good hiking shoes Basic alpine experience |
| T4 | Alpine Hiking | Sometimes need for hand use to get ahead | Terrain quite exposed, precarious grassy acclivities, jagged rocks, facile snow-free glaciers | Familiarity with exposed terrain Solid trekking boots Some ability for terrain assessment Alpine experience |
| T5 | Demanding Alpine Hiking | Single plainly climbing up to second grade | Exposed, demanding terrain, jagged rocks, few dangerous glacier and névé | Mountaineering boots Reliable assessment of terrain Profound alpine experience Elementary knowledge of handling ice axe and rope |
| T6 | Difficult Alpine Hiking | Climbing up to second grade | Often very exposed, precarious jagged rocks, glacier with danger to slip and fall | Mature alpine experience Familiarity with the handling of technical alpine equipment |