Mid Wales offers some of the most spectacular, empty tarmac in the UK. Far from the tourist traffic of Snowdonia, the Cambrian Mountains and Elan Valley hide sweeping trunk roads and technical hillside tracks that reward measured, flowing inputs.
The roads here are characterized by their openness. You get long sightlines across moorland, punctuated by deep river valleys and sudden, technical ascents. The main trunk routes are astonishingly well-sighted, allowing a confident rhythm without ever needing to press the car too hard, while the minor B-roads ask for extreme precision on broken surfaces.
A fiercely technical, highly concentrated sequence of corners cutting through the valley. With an extreme curve density and unpredictable grip levels, it punishes careless inputs and demands complete focus on line-choice.
The descent past the Pwllpeiran Upland Research Centre is narrower than it looks and hides deep potholes on the inside line.
Winding its way alongside the Clywedog reservoir, the B4518 is a lesson in managing elevation and camber. The road rises and falls dramatically, with corners that tighten unexpectedly, asking for patience on turn-in.
The viewpoint near the Bwlch-y-Gle dam gets busy with walkers by midday, so early morning runs are best.
Following the western edge of the Cambrian Mountains, this secondary route narrows frequently, alternating between flowing dual-track and tighter, single-track sections. The varied width and unpredictable surface demand constant attention and precise placement.
Sheep frequently wander onto the unfenced sections along the moorland stretch.
A key artery heading into Aberystwyth, blending faster dual-track sections with tighter, technical turns. The varied surface quality keeps you engaged, requiring small steering corrections and a relaxed grip on the wheel.
Morning traffic heading into Aberystwyth means this is best driven as the sun goes down.
Twenty-six miles of the A488: from Bishop's Castle over Colstey Bank to Clun, on through New Invention to Knighton on Offa's Dyke, then up past Bleddfa along the northern edge of Radnor Forest. The bends are mostly long sweepers with a few tighter drops into the river valleys, on tarmac that is good with rough patches, so it rewards a settled GT pace and reading the road well ahead rather than working hard at the wheel. Everything on it funnels over Clun's 15th-century packhorse bridge, which was never built for what now crosses it.
Shropshire Council closed the A488 at New Invention for bridge-deck repairs from August into autumn 2026 with a 21-mile diversion, so check it has reopened. The bridge in Clun is the pinch point in either direction: satnav-led lorries meet there.
The B4520 is sixteen miles north from Brecon to Builth Wells up the Honddu valley: hedged, fast-flowing lanes with blind corners as far as Upper Chapel, then the hedges stop, the road widens and climbs onto the edge of Mynydd Epynt before the long fall into Builth. The curve score is only 4.4 but the elevation change is 520 m, so it is a road about crests and gradient rather than steering lock. Smooth tarmac; it rewards reading the blind summits and leaving room for what the hedges hide.
The upper half skirts the Sennybridge live-firing range and is open sheep ground, and the Plough and Harrow at Upper Chapel has closed, so there is no pub between Brecon and Builth. Farm exits drag mud onto the lower half after rain.
Between Machynlleth and Tywyn the A493 keeps to the north bank of the Dyfi: past the Roman fort site at Pennal, then pinned between hillside and estuary into Aberdyfi, where it becomes the village's only through road before climbing out past Penhelig toward Tywyn. Curve density is low and the surface good; the corners follow the shoreline rather than fight it, so the road rewards reading the camber and holding a clean line through the estuary bends.
There is no verge along the estuary; even the Wales Coast Path is sent inland to avoid this road. Aberdyfi is the pinch point, a village stacked up a steep hillside with the A493 as its only street through. The Machynlleth end was shut for a month in February 2024 for flood-protection drainage at the Dyfi cottages.
South of Newtown the A483 climbs steadily past Dolfor to the saddle between Kerry Hill and Glog where the Ithon rises, then follows that river's valley down through Llanbadarn Fynydd, Llanbister and Llanddewi Ystradenny to the A44 at Crossgates. It is trunk road, so the radii are generous and the surface good, and the 22 miles have a long-legged rhythm of open hill sweepers on top and tighter, tree-lined river bends below that rewards settled steering rather than effort.
Since the 2019 bypass the old Dolfor Road through Newtown, with its 13 ft 3 in railway bridge, is no longer the A483; join at the bypass. The Newtown to Llanbadarn Fynydd length runs daytime closures for maintenance (late September to early October 2026), so check Traffic Wales before a weekday run.
Nineteen miles of primary road from the Teifi at Lampeter to the A40 at Llanwrda. It crosses into Carmarthenshire at Cwmann, sheds the A485 for Carmarthen, then climbs onto higher ground through grazing and woodland before dropping to the Cothi at Pumsaint. The climb and the descent are the tight, technical parts, and the road flows more freely once it has gained height. The surface is good almost throughout, which lets you settle into a rhythm through the longer sequences.
Pumsaint, the halfway point, is the National Trust's Dolaucothi Gold Mines: expect caravans and walkers turning in and out, and the shaded woodland stretches stay greasy long after autumn rain.
West of Llangurig the A44 climbs out of the Wye headwaters, clinging to the hillsides up to Eisteddfa Gurig at 408 m, its highest point, marked by the Elvis Rock. From there it comes off the watershed towards Ponterwyd in a series of long, sweeping bends. It is a trunk road with a trunk-road surface and only modest curvature, but the corners are big-radius and well sighted, which is what lets you plan a line a quarter-mile out and balance the car through it. The climb past Cwmbrwyno, a hundred metres in a mile under oversized chevrons, is the one section that asks for real concentration.
Sheep doze on the tarmac over the top, and the limits between Llangurig and Ponterwyd have been stepped down to 50, 40 and 30 in places since 2021. They change more often than the scenery. Stop at Ponterwyd for the Nant-y-moch turn or the kite feeding at Bwlch Nant yr Arian rather than in a lay-by on the hill.
Drop a start and end anywhere on the map, tune your route and Drivelines builds you a drive.