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Trail Run: Sugar Loaf (Abergavenny)

    Trail Running > Routes > Brecon Beacons Routes > Sugar Loaf Abergavenny

    The trig point on Sugar Loaf, Monmouthshire.
    Sugar Loaf seen from Deri Ridge, Monmouthshire.
    Views of the Black Mountains from Sugar Loaf, Wales.
    Wild Pony grazing on Sugar Loaf Mountain, Wales.

    A 10 km trail run up one of South Wales’ most iconic mountains, offering spectacular views from its conical peak.

    Start/Finish: w3w///positions.retail.support

    Distance: 10 km

    Ascent: 410 m

    Max. Altitude: 596 m

    Est. Time: 1.5 hrs

    Route Type: Circular

    Rating: Moderate

    Route Verified: September 2025

    Why run this trail?

    The distinct cone of Sugar Loaf (596 m) dominates the skyline above the town of Abergavenny at the southern edge of the Black Mountains. Though just shy of “true” mountain status, it’s a favourite of runners and walkers alike thanks to its accessible trails and 360-degree panoramas across South Wales, the Brecon Beacons, and even into south-west England.

    What makes Sugar Loaf especially inviting to run is the myriad of paths waiting to be explored – you’re spoilt for choice when it comes to picking a route to the summit. Fast, flowing and non-technical trails guarantee maximum enjoyment on the way down, too.

    This route begins at the small Porth y Parc car park, tucked at the end of a narrow lane a couple of miles north of Abergavenny (space for about eight cars, so avoid peak times).

    Porth y Parc to Deri Ridge

    From the car park, the route follows the minor lane north for a short distance before a sharp right hand turn into picturesque woodland. Climbing steadily, the path zig-zags for a couple of kilometres to emerge through bracken onto the grassy ridge of Deri.

    The woodland trail up to the ridge of Deri, Monmouthshire.
    The pleasant woodland trail up to the ridge of Deri, en-route to Sugar Loaf.
    Sugar Loaf seen from Deri Ridge, Monmouthshire.
    Emerging onto the ridge of Deri, Sugar Loaf looms into view ahead.

    Deri Ridge to Sugar Loaf Summit

    This section is easy running, with great views of Skirrid mountain to the right and the ever-present beacon of Sugar Loaf providing the perfect visual anchor ahead. After a couple of kilometres, the trail kicks up suddenly as it makes its way round the lower slopes of Sugar Loaf, with extensive views of Table Mountain and the Black Mountains beyond, the high point of Waun Fach clearly visible.

    Skirrid, seen from the slopes of Sugar Loaf, Monmouthshire
    Looking back towards Skirrid and the distant Malvern Hills from the lower slopes of Sugar Loaf.
    Steep path up to Sugar Loaf, Monmouthshire.
    It’s all uphill from here. A steep section on the way to the top of Sugar Loaf.

    As the path orbits the north-western tip of the summit there’s a short, steep scramble up to the top, but I followed the lower path as it contoured around the base and up a final ramp to deposit me neatly at the summit cairn.

    The trig point on Sugar Loaf, Monmouthshire.
    The summit cairn of Sugar Loaf, with a backdrop of the Black Mountains to the north.

    Because of Sugar Loaf’s monolithic shape and isolated topography, it really is worth repeating that the views from the top are terrific and the payoff far outweighs the effort required to climb it.

    I spent a good 20 mins wandering from one end of the small plateau to the other, admiring the views from all corners. The central Brecon Beacons and the twin peaks of Corn Du and Pen y Fan were particularly striking. It also proved a good opportunity to case out Sugar Loaf’s closest mountain neighbours – Skirrid and the Blorenge. Two more runs that I have now added to my to-do list!

    A monkey on the summit of Sugar Loaf, Monmouthshire.
    Practicing some ‘hands-on-knees’ ascending form on the crags of Sugar Loaf.
    View south from the summit of Sugar Loaf, Monmouthshire.
    Looking south, with the peaks of Skirrid to the left and Blorenge to the right of the summit cairn.

    The Fast Descent

    After lingering on the summit and swapping camera duties with fellow “Loafers”, a sudden cold wind offered a timely reminder that it was time to move. I zipped up and bolted down the south-western slope to start my descent. This dropped a couple of hundred metres in short order before cutting off east across the face of the mountain into the bracken again.

    Picking my way through narrow trails in the undergrowth, I stopped to admire the wild ponies grazing in the late afternoon sun. Despite my best stalking efforts I failed to capture the perfect photo before calling it a day.

    Wild Pony grazing on Sugar Loaf Mountain, Wales.
    A very hairy wild pony rocking out amongst the bracken on the lower slopes of the mountain.

    The descent gradually wound its way off the slopes, passing through some wooded sections and fields to emerge back at the starting point and the finishing prize of an ice cold Coca Cola waiting for me back at the car.

    The entire descent – minus the time I had spent faffing around with ponies – had taken under 20 minutes. Now if I could just get my ascending times down a bit… the next few days in the Brecon Beacons would offer plenty of practice!

    Trail run highlights

    Incredible views of the Black Mountains and the Brecon Beacons

    The iconic physicality of Sugar Loaf – it’s like a 17th century etching

    Fast trails and clear paths on the way up and down

    A real mountain experience in a compact timeframe

    Trail run tips

    Porth y Parc car spaces are limited so have a fallback parking spot

    The summit is exposed – take an extra layer if you plan on loitering


    Have you run this route? If you’ve discovered a better variation, noticed something that’s changed or have local knowledge to share, I’d love to hear from you.

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    Dean

    About the author
    Dean is a qualified Strength & Conditioning Coach, Personal Trainer and full-time fitness enthusiast in Godalming, UK



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