Chew Green Roman Fort loop from Byrness

This is a difficult hike, requiring a very good level of fitness and sure-footedness. The initial ascent from Byrness to Byrness Hill is particularly steep, rough, and often boggy, and has been described as one of the most brutal ascents on the entire Pennine Way. It is not recommended for beginners.

You can expect varied and often demanding terrain. The route starts with a steep climb, which can involve 'rock climbing' and significant boggy sections. Once on the crest, the ground generally improves, though occasional boggy patches persist. The path includes grassy tracks, rocky sections, and some areas with boardwalks or rocky steps. You'll traverse woodlands, rough ground, and forest tracks on the descent. Some parts can be overgrown and littered with rocks and boulders.

The full loop, which is approximately 20 km (12.5 miles), typically takes around 6-7 hours to complete, depending on your pace and stops. Komoot estimates the moving time at approximately 5 hours 53 minutes.

The primary historical feature is the Chew Green Roman Fortlet, a complex of Roman military camps visible as indentations in the grass. The trail also follows parts of Dere Street, an ancient Roman road. A unique aspect is that the route crosses the England-Scotland border multiple times. You'll also pass over peaks like Byrness Hill and Ravens Knowe Summit.

Yes, the trail offers expansive and picturesque views, especially as you ascend. You'll get impressive vistas encompassing the Otterburn Ranges, Green Crag, Ravens Knowe, and distant valleys and forests. The Cheviot hills provide a sense of wild, open beauty.

The loop typically starts from Byrness. Parking is usually available in or near the village of Byrness, which serves as a common starting point for hikes in this area of Northumberland National Park. Specific parking areas may be limited, so it's advisable to check local signage upon arrival.

While dogs are generally welcome on trails in Northumberland National Park, it's crucial to keep them on a lead, especially in areas with livestock or ground-nesting birds. Given the challenging terrain and potential boggy sections, ensure your dog is fit enough for a long, strenuous hike.

The best time to hike is generally during the drier months, from late spring to early autumn (May to September), to avoid the worst of the boggy conditions and benefit from longer daylight hours. However, even in summer, the weather in the Cheviots can be unpredictable, so be prepared for all conditions.

No, there is no entrance fee to access Northumberland National Park or to hike the Chew Green Roman Fort loop. Permits are not generally required for recreational hiking on public rights of way within the park. However, always respect local regulations and private land.

Yes, a significant portion of this route follows the Pennine Way (Middleton in Teesdale to Kirk Yetholm), covering about 45% of the loop. It also intersects with sections of Dere Street, an ancient Roman road, for about 7% of the trail.

Given the trail's difficulty and remote nature, pack essentials like sturdy waterproof hiking boots, waterproof and windproof clothing, extra layers, plenty of water, high-energy snacks, a map and compass (or GPS device), a first-aid kit, and a fully charged phone. Be prepared for rapidly changing weather conditions.