Start with the map, but trust the ground

A coastal path is rarely just a line on paper. It is a conversation between the map in your hand and the waymarkers in front of you. The map tells you where the right of way is meant to run, while waymarkers confirm it on the ground. When they agree, you can relax into the view. When they disagree, stop and work out why before you carry on. That habit keeps you on path, off private land and away from crumbling cliff edges.

Know the symbols that matter on the coast

On many 1:25,000 maps, a public footpath appears as a green dashed line, while a bridleway has dashes plus small plus signs, and a byway open to all traffic uses dashes with plus and minus signs. A National Trail — the England Coast Path, for example — is marked with an acorn symbol. Access land is often shown with a pale orange wash, and land without public access is left white or marked with a private notice. Contours are orange, with a 5-metre or 10-metre interval; tight contours mean steep ground, and black hachures mean cliffs or very steep slopes.

Coastal maps also show things you will not find inland: sand, mud, shingle, marsh, tidal water and the mean high-water mark. A path may cross a beach at low tide but be cut off at high tide. The map may show a slipway or a footbridge, but if the bridge is damaged, the waymarker will usually divert you.

Read the waymarker colours correctly

In England and Wales, the standard waymarker colours are worth memorising:

• Yellow arrow — public footpath. Walkers only.
• Blue arrow — public bridleway. Walkers, cyclists and horse riders.
• Red arrow — byway open to all traffic, though often rough and better suited to walkers.
• Purple arrow — restricted byway, usually walkers, cyclists and horse riders, but no motor vehicles.
• Acorn — a National Trail. On coastal routes, this is the symbol to follow when in doubt.

Some long-distance coastal routes use their own emblem, such as a wave, a dragon or a county badge. Treat it as a confirmation, not a replacement for the map. A fingerpost at a junction should name the destination and often gives a grid reference. If a fingerpost points one way but your map shows the right of way going another, check for a newer temporary sign before assuming the map is wrong.

Match map to ground at every junction

When you reach a gate, stile, bridge or crossroads, stop and orient the map. Use the coastline itself: headlands, coves and offshore islands are excellent handrails. Compare the shape of the path on the map with the ground under your feet. Does the map show a path bending left around a combe, then right towards a headland? If the waymarker agrees, continue. If not, look for a missing sign, a locked gate or a path that has been rerouted.

A common coastal trap is the path shown close to the cliff edge on the map, while the actual trodden line runs further inland. That inland line may be the official diversion. Follow the waymarkers and the trodden path, not the map's older line. If there are no waymarkers and no clear path, turn back to the last confirmed marker.

Stay off private land and respect permissive paths

Not every path on a coastal map is a public right of way. A path may be permissive, meaning the landowner allows access but can close it on certain days. Permissive paths are often shown with a different symbol or a small note. Access land, shown with a pale orange wash, gives you freedom to roam on foot, but it may still have restrictions for dogs, nesting birds or military training. Read the local notices at access points.

If a waymarker says "private" or "no public access", do not assume the map overrides it. Check for an alternative right of way. Coastal farms, caravan parks and military land can all interrupt the path. A good habit is to note the next grid reference where the path rejoins public access, then navigate to it without crossing forbidden ground.

Watch for eroding edges and tidal cut-offs

Erosion is the coastal walker's constant companion. A path that was safe last year may now be a crumbling ledge. On the map, look for the cliff symbol, hachures and the high-water mark. On the ground, look for cracked earth, fresh falls, exposed roots and warning signs. If the path is narrow and the drop is sheer, do not continue. A diversion waymarker may send you inland; follow it even if it adds distance.

Tidal crossings need special care. A map may show a path across sand or mud, but the sea can cover it quickly. Check a tide table, allow extra time and never cross a tidal inlet if the water is already rising. Waymarkers on both sides of an estuary are a good sign, but they do not make the crossing safe. If in doubt, take the inland route.

Finally, carry a paper map and a compass, even if you use a phone. Batteries fail, screens crack and signal comes and goes on remote coast. Keep the map folded to the section you need, and check it against every waymarker. That simple rhythm — map, marker, ground — will keep you on the path and free to enjoy the sea.