The trail grading system in use at Glentress, with the length of each trail shown
| Grade | Description | Gradient | Hazards | Total distance at Glentress |
| Green | Easy | Gentle | Smooth surface, wide turns | 1.5 km |
| Blue | Moderate | Moderate | Some small obstacles | 13 km |
| Red | Difficult | Variable | Mostly single-track, many obstacles | 19 km |
| Black | Severe | Any rideable | Any rideable | 29 km |
| Freeride | Variable | Variable | Several jumps and berms | 2 km |