Decide early, adjust gently
Most trouble on rough ground comes from deciding too late. A rider who notices a root three bike lengths away has little choice but to brake hard or swerve. A rider who noticed it from fifteen or twenty metres has time to slow gently, choose a line and approach calmly. Terrain reading is the habit of gathering that information early and acting on it smoothly.
This article is about the thinking, not about specific tricks. It applies on gravel tracks, dirt paths and simple off-road trails. Wear a helmet and suitable protection, ride within your ability, and walk anything that looks beyond it.
Where to look
Your eyes steer the bike to a large extent, so use them in layers:
- Far: the overall shape of the route, bends, climbs, descents and junctions, some distance ahead.
- Middle: the features that will arrive in the next few seconds, such as a rut, a rock garden, a wet patch or a bridge.
- Near: the exact line your wheels will take over the last few metres.
Keep your eyes moving between these layers and avoid staring at the front wheel. Looking at the exit of a feature, not at the obstacle itself, generally helps the bike go where you want. The idea of reading the road also applies off the road, and visual focus matters most when the ground is uneven.
Gradients
Slopes change speed and traction. Before a climb, look at how steep it is and how long. Shift into a suitable gear before the slope, not on it. Loose surface on a climb can make the rear wheel spin, so a steady, smooth effort helps. Before a descent, check the line, the surface and what is at the bottom. A gentle slope that ends in a sharp bend or a soft patch needs more care than its gradient suggests.
If you cannot see the whole slope, treat the unseen part with caution. Crests hide what lies beyond, so slow a little before cresting an unfamiliar rise.
Roots
Tree roots are common on forest paths. They tend to be slippery when wet or covered with leaves, and most slippery when they cross the path at a shallow angle.
- Approach roots as upright as you can, with a loose grip.
- Cross them at close to a right angle where possible, since a wheel meeting a root at a shallow angle can slide sideways.
- Avoid braking or turning while the wheels are on the root. Slow before it.
- Keep your pedals level and your weight light on the bars so the wheels can roll over.
- If the ground looks greasy and the roots are wet, slowing right down or walking is a sensible option.
Sand
Sand is soft, so wheels sink and steering becomes vague. Dry loose sand is often the hardest; damp sand can be firmer. If you see sand ahead:
- Make your speed decision before you reach it. Momentum usually helps you roll through short patches, but too much speed makes a mistake harder.
- Keep the front wheel light and the steering gentle. Sharp turns can make the front wheel dig in.
- Stay seated or hover lightly and keep pedalling smoothly.
- Avoid braking hard in sand; ease off and let the sand slow you.
- Look for firmer lines such as the darker or compacted track, though conditions vary.
A longer stretch of deep sand may be better walked. Riding in sand is its own topic, and beach conditions bring tides and soft ground.
Water crossings
Water can hide rocks, holes, mud and slippery surfaces, so it is one of the more uncertain features. Before you cross:
- Judge depth carefully. If you cannot tell how deep it is or what is under it, walk through or choose another route. Fast or deep water can be dangerous to wade or ride through.
- Look at the other side for the exit and where you will put your weight.
- Cross at a steady, moderate pace, avoiding sudden steering or braking.
- Expect wet brakes to bite poorly for a short time afterwards. Squeeze gently a few times to dry them.
- Avoid crossings when water is rising, fast-moving or after heavy rain.
Whether to cross at all is a judgement. Never cross water you cannot assess, and do not take risks to keep riding.
Surface changes and mixed ground
Terrain is rarely one thing. A track might alternate between hard-packed earth, patches of loose stone and short boggy parts. Surface type changes grip and braking distance, so slow down before changes and keep your steering gentle through them. Slippery surface clues such as shine, wet leaves, moss and mud are worth noticing early.
Plan, then ride the plan
A simple routine that many riders find helpful:
- Spot: notice the feature while it is still far away.
- Judge: decide if it is rideable for you today, given the weather, your energy and the bike.
- Choose: pick your line and your speed.
- Adjust: do your braking and gear change before the feature, while the bike is straight and upright.
- Commit or walk: if it still looks wrong, get off. Walking a feature first can also show you the line, and walking a feature before riding it is a good habit.
Practice and humility
You can practise looking ahead on any ride. Choose a familiar trail and name features aloud a few seconds before you reach them. Over time the scanning becomes automatic. Conditions change with weather and season, so a trail you know well can still surprise you. Ride within your skills, take breaks when tired and let someone know where you are going.