Northumberland Coast Path & Berwickshire Coastal Path. The Northumberland Coast Path stretches for 103km (64m) from Cresswell in the south to Berwick-upon-Tweed in the north. The Berwickshire Coastal Path stretches for 48km (28m) and continues this route from Berwick-upon-Tweed to Cockburnspath. These routes are part of the North Sea Trail and offer some of the finest coastal walking in the country with rugged coastline, stunning cliff scenery and panoramic views. XT40 New generation of tough polyethylene maps. The Harvey series of Long Distance Route maps is an established success. Now the advanced technology used in the creation of our best-selling British Mountain Maps is also applied to the route maps.These maps are a leap forward in technical excellence. They are tough, durable, light and 100% waterproof virtually indestructible in normal use.They are light to carry, and compact not the great bulky package you get with a laminated map.The map is detailed, with the routes clearly marked. It also contains general information, useful telephone numbers and a full key.