Singletrail Scale: riding skills and the right self-assessment

Assessing yourself realistically is an art – and even more so on a mountain bike. Anyone planning MTB tours in South Tyrol will sooner or later face the question: which difficulty level suits me? Men tend to overestimate their riding skills, while women often underestimate themselves. Both can become a problem when you find yourself on a trail that is beyond your abilities.

Imagine this: you choose an MTB tour, set off – and only realize on the descent that you have to push the bike for long stretches. Even with an e-bike or e-MTB. That doesn’t just cost energy, it also takes away from the enjoyment of the day. So how can you avoid it?

Most of the time, the issue isn’t the tour itself but the preparation beforehand. If you simply set off without checking the elevation profile and trail conditions, you risk unpleasant surprises. Just as important is an honest look at your own mountain bike riding skills: what can I do confidently? Where are my limits? Only if you know the answers to these questions can you realistically assess a tour – and truly enjoy it.

The Singletrail Scale (STS) helps with exactly that. It classifies trails from S0 to S4 (and beyond to S5) and indicates which technical skills are required at each level – similar to the color coding in ski resorts: blue corresponds to S0 and S1, red to S2, and black to S3 to S5. Here is an overview of MTB difficulty levels and the riding skills required:

S0 – Green, Blue | Beginners
S0 trails have no technical requirements. They are usually wide forest or meadow paths with grippy natural ground or well-compacted gravel. The terrain is flat to slightly sloping, the turns are wide and predictable – there are no steps, rocks or roots. Perfect for beginners or anyone who simply wants to roll through South Tyrol’s landscape at a relaxed pace.

MTB skills for S0:

• Look far ahead
• Safe braking with front and rear brakes
• Shifting gears

S1 – Blue | Basic skills required
On S1 trails, the terrain starts to show more character: shallow roots, small rocks and occasional water channels or erosion damage create the first technical challenges. The surface may be loose in places and the gradient can reach up to 40% or 22°. Tight switchbacks are not yet typical – but riding safely here already requires solid basic MTB skills.

MTB skills for S1:

• Look far ahead
• Ride standing in the basic position (pedals at 9 and 3 o’clock)
• Safe braking with front and rear brakes
• Smooth, quiet gear shifting
• Slight weight shift in corners – all obstacles can be rolled over

S2 – Red | Advanced riding technique
From S2 onwards, riding becomes active rather than simply rolling along. Larger roots and rocks, uneven surfaces, exposed sections, steps and tight corners demand full attention. In some sections, gradients can reach up to 70% or 35°. Many red trails in South Tyrol fall into this difficulty category – hesitation here will quickly cost you momentum. Advanced riding skills and constant body control are essential.

MTB skills for S2:

• Look far ahead
• Active basic position with targeted weight shift on steep terrain
• Trackstand for at least 5 seconds
• Confident cornering in tight and wide turns
• Pushing over steps
• Unweighting front and rear wheels through weight shift
• Controlled braking with emphasis on the front brake
• Smooth, quiet gear shifting

S3 – Black | Excellent bike control
S3 is no longer a trail you can simply roll down. Rocky sections with large boulders and complex root networks, high steps, tight switchbacks and tricky off-camber sections leave little room to relax. Slippery ground and loose scree are common, and gradients above 70% or 35° are not unusual. Black trails in South Tyrol require excellent bike control and constant concentration.

MTB skills for S3:

• Look far ahead
• Active basic position with strong weight shift
• Trackstand for 10 seconds or longer
• Pedal kicks and wheelie technique
• Pushing steps and drop technique
• Controlled lifting of front and rear wheels
• Advanced cornering in tight and wide turns
• Precise braking with emphasis on the front brake
• Smooth, quiet gear shifting

S4 – Black | For extreme riders
S4 is where mountain biking begins to merge with trials riding. Extremely steep ramps, meter-sized boulders, demanding root sections and loose scree – combined with tight switchbacks and steps where the chainring inevitably touches the ground. Anyone riding black trails of this level in South Tyrol is operating at the limit of what is technically rideable. Even carrying the bike downhill can become dangerous.

MTB skills for S4:

• All skills from S3
• Trials techniques such as rear-wheel repositioning for very tight turns
• Perfect brake control in every situation
• Using pedal kicks precisely and safely