9.7
km
1:18:00
Estimate
149.4 m
Ascent
0%
Paved
3/5
Hilly
CPs
Elevation
0.0 km
2.4 km
4.8 km
7.3 km
9.7 km
101 m
1 m
Trade the pavement for the rolling chalk grasslands of the South Downs on this invigorating 9.7km loop starting from Seaford Golf Club. This is a quintessential trail run that challenges your quads with three distinct hilly sections and a total ascent of 149m. Expect an entirely unpaved experience as you navigate the anti-clockwise circuit around Bostal Hill. The terrain is a mix of compact dirt paths and grassy ridges, offering panoramic views of the Cuckmere Valley and the distant English Channel. Runners will appreciate the wide-open skies and the rewarding descent back toward Seaford, though the exposed nature of the hills means you should be prepared for the bracing coastal winds that often sweep across the downs.
The area surrounding Bostal Hill is steeped in ancient Sussex history, sitting within the South Downs National Park—the UK's newest national park. As you run, you are traversing landscape that has been shaped by centuries of traditional sheep grazing, which maintains the vibrant wildflower populations and rare butterfly habitats unique to this chalk downland. The route brushes past historic boundary lines and sites of archaeological interest, offering a sense of isolation and tranquility just minutes away from the coastal town of Seaford. Local runners often favor this loop for its technical variety and the way the scenery shifts from the lush inland slopes to the stark, white cliff-edge atmosphere as you return toward the golf course.
Calculate your target splits for this hilly 9.7km South Downs trail.
This route is an ideal distance for those following a 10k training block.
Tips for handling off-road terrain and the 149m of elevation gain.
Fuel right for nearly 10km of challenging South Downs trails.
South Downs
10K
England
Scenic
Nature
Wildlife
Rural
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