Routes at Big Rock are graded using the French (Sport) grading system. Our routes start at 3 and increase numerically. As the difficulty increases the grades become more fine-tuned with the addition of a, b, and c from 4 upwards, and the addition of + to the letters above 6a. The grade will be indicated at the start of each route.
Our bouldering problems, or blocs, are graded using the V (or Heuco) scale. Starting at VB, the scale then uses V and a number increasing from 0 to denote the difficulty of the bloc. Each bloc is part of a circuit with a grade band, indicated by the tag at the start of each bloc.
If you’re already familiar with a different grading system, the ROCKFAX website has a handy grade conversion chart.