Trans Cambrian Way Loop

This route is considered very challenging, often rated 7 or 8 out of 10. While much of it is rideable on a gravel bike, be prepared for sections that are more suited to mountain bikes, requiring strong bike handling skills and a good level of fitness. You should expect significant climbing and technical descents.

The terrain is highly varied, with about 70% unpaved surfaces. You'll encounter a mix of high-quality gravel tracks, grassy banks, slate-ridden descents, rocky singletrack, ancient ridge roads, and forest tracks. There are also quiet country lanes. Be ready for numerous river crossings, some boggy sections, and gates that can slow your progress.

While originally an MTB route, many riders successfully complete it on gravel bikes. However, it's crucial to have wider, big-tread tires (40-45mm recommended) to handle the varied and often technical terrain. Some sections might still require pushing your bike (hike-a-bike), where a mountain bike would be more comfortable.

The full bikepacking route, which can range from 160-290 km, is usually completed over 2 to 5 days. The specific loop mentioned here is about 77 km and could be done in a long day, but given its difficulty and varied terrain, planning for an overnight stop or two would allow for a more enjoyable experience.

While the specific starting point for this loop is near Rhayader, the classic Trans Cambrian Way often starts or ends in Knighton. For the Elan Valley Loop from Rhayader, parking options would be available in or around Rhayader, which serves as a good base for exploring the Elan Valley.

The best time to ride is typically from late spring to early autumn (May to September) when the weather is generally milder and daylight hours are longer. Be aware that even in summer, parts of the trail can be misty and murky, and heavy rain can make river crossings and boggy sections more challenging.

The route traverses the remote Cambrian Mountains, offering vast and beautiful scenery. You'll pass through the stunning Elan Valley with its impressive reservoirs and dams, such as the Claerwen Dam, and ride along sections of the Elan Valley Trail. You'll also encounter forests like Hafren and Tarenig, ridge roads with expansive views, and the serene Teifi Pools. Expect to see plenty of sheep!

Generally, there are no specific permits or entrance fees required for cycling on public rights of way or designated trails within the Claerwen National Nature Reserve or the wider Elan Valley. However, always respect local signage and regulations, especially concerning access to private land or sensitive ecological areas.

While dogs are generally welcome on public rights of way in Wales, this route passes through extensive sheep-grazing areas and remote terrain. If bringing a dog, it must be kept under strict control, preferably on a lead, to protect livestock and wildlife. Be prepared for river crossings and potentially challenging terrain for your dog.

Given the route's remote nature and varied terrain, self-reliance is key. Essential gear includes a reliable bike with appropriate tires (40-45mm big-tread gravel tires), navigation tools (GPS device or Komoot app with offline maps), sufficient food and water, a water filter, repair kit, first-aid kit, and appropriate clothing for all weather conditions. Be prepared for potential hike-a-bike sections.

Yes, the route has several notorious sections. These include the 'infamous descent of death' off Foel Fadian, which is very steep and loose, often requiring walking. Around mile 68, an old road has washed away, leaving a steep, boulder-filled section. You may also encounter very boggy parts in fields, especially between Knighton and Bwlch y Sarnau, and numerous river crossings that might require dismounting and wading after heavy rain.