Loch a' Choire Mhoir, Loch Lucha Choire and Seana Bhraigh

This is a long, remote Highland mountain day that links two lonely corrie lochs with the broad, high summit of Seana Bhraigh, covering about 23 km / 14.3 miles with roughly 800 m / 2,625 ft of ascent. Although the overall difficulty sits around medium for experienced hillwalkers, that rating depends heavily on weather, ground conditions, and confidence with pathless terrain. In clear conditions it feels like a rewarding expedition into one of the quieter corners of the Northwest Highlands; in mist, wind, or heavy rain, it becomes a much more serious outing where judgment and pacing matter.

The route is generally approached from the area near Oykel Bridge / Inveroykel, by the A837 in Sutherland, which is the nearest widely recognised landmark and practical access point for most walkers. If arriving by car, the usual approach is via the A837, using estate tracks and roadside access points near Inveroykel or Oykel Bridge depending on the exact line of the walk. Parking in this part of the Highlands is often limited and informal rather than a large dedicated trailhead, so it is important to park considerately without blocking estate access, gates, or passing places. By public transport, access is much more limited: the nearest rail connection is typically Ardgay Station, followed by a long taxi transfer toward Oykel Bridge or Inveroykel. Bus options in this area are sparse and seasonal reliability can vary, so planning the full journey in advance is essential.

From the start, the day usually begins on estate ground with easier progress on track or rough vehicle road before the route commits to open hill. That opening section can feel deceptively gentle, allowing a steady warm-up through glen scenery of heather, rough grass, peat, and scattered burns. The early miles are often the most straightforward underfoot, and they are a good place to settle into a sustainable pace because the route becomes more demanding once it leaves the lower tracks and starts climbing toward the corries.

Climbing toward the corrie lochs

The first major objective is Loch a' Choire Mhoir, set in a dramatic corrie beneath the higher slopes. As the route gains height, the terrain becomes rougher and wetter, with sections of bog, peat hags, and intermittent path traces rather than a consistently engineered trail. Expect the climb to build gradually rather than in one single steep wall, though there may be sharper pulls depending on the exact line taken. This middle section is where much of the day’s ascent is accumulated, and it can feel slow going despite the moderate mileage.

Loch a' Choire Mhoir is one of the key visual highlights of the outing. The corrie setting gives the walk a more rugged mountain character, with steep enclosing slopes and a sense of isolation that is typical of the far northern Highlands. In poor weather, this area can also feel very enclosed and committing. Burns feeding the loch may be easy to cross in dry conditions but can become more awkward after prolonged rain.

Beyond it, the route continues toward Loch Lucha Choire, another remote upland loch tucked into wild country below the upper mountain. The transition between the two lochs often involves uneven ground and route-finding choices rather than a single obvious corridor. This is where careful navigation becomes especially important. HiiKER is useful for checking the broader line of travel, identifying contour patterns, and confirming where the route leaves clearer ground for more open hillside.

The ascent of Seana Bhraigh

From the lochs, the route turns more decisively uphill toward Seana Bhraigh, a broad and high Munro whose character is more expansive than sharply pointed. The mountain rises to 926 m / 3,038 ft, and the upper slopes are often a mix of short grass, stony patches, and peatier sections lower down. The climb is rarely technical in dry summer conditions, but it can be tiring because of the cumulative distance and the exposed nature of the upper mountain.

The summit area is known for its wide views across a huge sweep of northern Highland country. On a clear day, the outlook can extend across layered ridges, deep glens, and distant peaks, with a real sense of scale and remoteness. In cloud, however, the broad summit plateau can be confusing, and bearings need to be taken seriously. This is not a mountain where walkers should rely on a worn footpath to lead them safely off the top.

Wind exposure is one of the main things to prepare for here. Even when lower glen conditions feel mild, the summit can be significantly colder, and the broad upper slopes offer little shelter. Waterproofs, warm layers, and enough food and water for a full mountain day are important because there are no facilities once you leave the road.

Descent and return

The return usually retraces much of the outward line, which means the descent still demands concentration. On paper, losing 800 m / 2,625 ft sounds straightforward, but rough Highland ground can be punishing late in the day. Wet grass, peat, and loose stones can all slow progress, and the final kilometres often feel longer than expected. If the weather closes in during the afternoon, the lower corrie and moorland sections can become harder to read than the map suggests.

Time management matters on this route. For many walkers, this is a full-day outing rather than a quick half-day hill. A strong, steady pace with breaks kept under control is usually better than pushing hard early on and fading during the long return.

The landscape around Seana Bhraigh and the Oykel area is shaped by classic Highland geology and glaciation. The corries holding Loch a' Choire Mhoir and Loch Lucha Choire were carved by ice, leaving steep-sided bas