Route: Rownd Mynydd Du (Black Mountains Round) (United Kingdom)

Rownd Mynydd Du (Black Mountains Round), is a circular fell running round devised by Brett Mahoney (first completed in winter conditions on 04.12.21 by Brett Mahoney & Tim Woodier) that starts and finishes in the market town of Abergavenny, summiting every mountain and significant hill in the black mountains area of the Brecon Beacons National Park. 

Mountains/Hills in order of appearance: 

1. Sugar Loaf - 596m

2. Table Mountain - 450m

3. Pen Cerrig Calch - 701m

4. Pen Allt Mawr - 719m

5. Pen Twyn Glas - 646m

6. Mynydd Llysiau - 663m 

7. Mynydd Llangors - 506m

8. Mynydd Troed - 609m

9. Waun Fach - 810m

10. Pen Y Gadair Fawr - 800m 

11. Pen Twyn Mawr - 658m

12. Crug Mawr - 550m 

13. Bal Mawr - 607m

14. Chwarel Y Fan - 670m

15. Twyn Talycefn - 702m

16. Rhos Dirion - 713m

17. Twmpa - 680m

18. Hay Bluff - 677m

19. Black Hill - 640m

20. Unnamed - 610m

21. Unnamed - 552m

22. Hatterall Hill - 464m

23. Gaer - 427m 

24. Bryn Arw - 384m 

25. Skirrid Fawr - 486m

Route Distance: 116.9km

Route Ascent: 5,263m 

Route details: 

The route starts and finishes at the scout hut in Abergavenny, heading directly out of town the find the rholben and summiting the Sugar Loaf.

Leaving the Sugar Loaf via the Pen-Y-Fal ridge, the route heads to Llanbedr before ascending Perth Y Pia to Table Mountain.

From Table, the route heads north over Pen Cerrig Calch, Pen Allt Mawr, Pen Twyn Glas, Mynydd Llysiau then leaving the ridge to the west for an out and back on Mynydd Llangors and Mynydd Troed.

From there, you ascend the dragon's back to the summit of Waun Fach, heading south to Pen Y Gadair Fawr, Pen Twyn Mawr & Crug Mawr.

From Crug Mawr, head down through the southern edge of Mynydd Du forest, cross the valley road and head up to Bal Mawr.

From Bal Mawr, head north along the ridge to its end, summiting Chwarel Y Fan, Twyn Talycefn and Rhos Dirion.

Head east to summit Twmpa, cross gospel pass and summit Hay Bluff before an out and back to Black Hill.

Follow the Offa's Dyke path south along the ridge taking in the two unnamed summits and Hatteral Hill before dropping down to Cwmyoy. 

At Cwmyoy, head west to hit the top of the Gaer before dropping off through a nature reserve to pick up the track to Bryn Arw. 

Head directly off Bryn Arw to hit the old Hereford road, then pick up the beacons way path to the final summit of Skirrid Fawr.

From the Skirrid, head down the ridge and onto the road for the final stretch back to Abergavenny to finish.

The summits can be tackled in any order as long as all are visited.