The pass data tables in this guide include a grading for each pass where this has been evaluated from first-hand experience. Contributions are welcome. The grading is quite subjective but should give hikers some idea of what they are in for:

1 – Very easy with minimal danger and a relatively shallow gradient. Passes assigned this grading do not have any clambers (except possibly on avoidable shortcuts) and there are no narrow gullies to negotiate near their summits.

2 – More than just an easy grass slope, passes assigned this grading are a little more challenging due to rougher terrain and having to move through narrow gullies and other more demanding areas. They require more focus than you would need on an ordinary mountain path, but the risks are still quite low.

3 – A pass of average difficulty, requiring some easy but careful clambering and usually no sense of exposure. Hikers need to be very focused to avoid a misstep. There are no special dangers other than loosening rocks onto hikers below.

4 – At least one awkward clamber (crux) is involved, and a rope for raising or lowering backpacks over these should be carried. A walking rope may also be needed to assist less experienced hikers. Depending on the conditions and the experience of your group, a crux may not be negotiable and you will have to turn back. Teamwork is essential. There is a high risk of injury, especially if you stray from the optimum route. Some hikers may be unnerved by a sense of exposure.

5 – Serious mountaineering stuff requiring a head for heights and a steady nerve. Expect very steep – even vertical – gradients, exposure and one or more hectic cruxes requiring the belaying of climbers and equipment. Good leadership and teamwork are essential. Potentially deadly if things go wrong!