When the Mist Rolls In Off the Sea

Anyone who walks the UK coast regularly knows the feeling. One minute you are admiring a clean line of cliffs and a glittering sea, the next the horizon has vanished and the path ahead has become a grey suggestion. Coastal fog arrives fast, often without much warning, and it does so in exactly the places where the ground is least forgiving. Cliff edges are unfenced, the paths are sometimes undercut by erosion, and a wrong turn of a hundred metres can take you from a stile to a crumbling lip of shale.

None of this should put you off. It should simply mean that when the visibility closes down, you have a plan that works without the sea view. The good news is that coastal walking gives you some of the most generous navigation aids in the country, as long as you know how to read them.

Map, Compass and the Discipline of the Bearings

Take a paper map, a compass and the ability to use both together. A 1:25,000 sheet is the coastal walker's friend: it shows the path, the field boundaries, the steep ground hachures and the little inlets that tell you exactly where you are. Keep it in a clear case, on a lanyard or in a chest pocket where you can reach it without taking your pack off.

In poor visibility, work in short, deliberate legs. Before you set off from each waypoint, take a bearing, note the distance, and predict what you should meet at the end of it. Then walk on the bearing, counting your paces or watching your watch. When you arrive, confirm your position with a feature you can actually feel or see: a gate, a wall corner, a stream crossing, a change in the ground underfoot.

• Aim off deliberately. If you are heading for a path junction near a cliff, aim a little inland of it, then follow the handrail of the path or boundary to the point you want. Never aim straight at a cliff edge feature.
• Use the sea as a handrail, not as a bearing. You can hear surf and smell salt water, but you cannot judge distance to the edge by sound alone. Keep the sea on a known side and hedge inland.
• Time and pace your legs. A typical laden pace on rough coastal ground is around 3 kph, slower on steep or muddy sections. If you have walked longer than expected, stop and re-fix rather than pressing on hopefully.
• Keep a GPS or phone as a backup only. Signal on the coast is patchy, batteries drain in the cold, and a screen that tells you where you are does not tell you where the unsafe ground lies.

Waymarks, Gates and the Small Clues Underfoot

National Trail waymarking along the coast is generally excellent, but in fog you may only see the disc on the post when you are almost touching it. Slow down and look for the sequence rather than the single mark: a stile, then a short trod, then a post, then a gate. Painted arrows on rocks, worn grass, and the slight shine of a trodden line through wet vegetation are all readable in mist if you are moving slowly enough to notice them.

Where a path forks and no mark is visible, resist the instinct to take the wider or more dramatic option. Coastal paths often send you inland around a landslip or a steep-sided combe. If you cannot confirm the junction, walk a short distance along each branch and look for wear, cut vegetation or the tell-tale painted post further on, then return to your last certain point.

Always Have a Low-Level Route Ready

Before you leave the car park, plan a second route that stays low, follows lanes, tracks or a beach, and gets you to the same place without committing you to the cliff tops. Write it on the map margin or in a notebook. This is the route you take when the cloud base drops below the path, when the wind is pushing spindrift across the headland, or when someone in the group is struggling.

Check tide times if that low route uses a beach or a causeway. A misty beach is a lovely place to be on a falling tide and a terrible place to be on a rising one, especially where the cliff blocks any escape inland. Note any escape points onto higher ground along the way, and mark them clearly.

Kit, Judgement and Knowing When to Turn Back

Carry a head torch, a whistle, an emergency shelter or large survival bag, spare warm layers, and water. Tell someone your route and your expected finish time, and give them a call if you change it. If you are navigating in the mist for an hour or more, eat and drink before you feel you need to; cold, damp and concentration are a draining combination.

The hardest and most valuable decision is the one to turn around. If you have lost confidence in your position, if the group is tired, if the wind is strengthening, or if the low route is closing in with the tide, stop and take the alternative. The coast will still be there next weekend. A walk that ends early in a warm café, with everyone accounted for, is a far better day out than a triumphant finish that nearly went wrong.