1 - Suitable for most walkers/cyclists.
2 - Suitable for most walkers/cyclists with some short steep or rough sections - good fitness required.
3 - Includes short steep or rough sections. Moderate fitness level required.
4 - Includes short steep and sometimes challenging or rough sections. Moderate to high fitness level required.
5 - Challenging steep sections, rough areas or river crossings. A high level of fitness required.