South Downs Way 100: race day preview
Tomorrow morning from Winchester
Wave 1 goes at 05:30 — 600 runners filing out of Matterley Bowl in the dark, about to spend the next 13 to 30 hours on the South Downs Way. A hundred miles east along the chalk ridgeway to Eastbourne, with twelve thousand feet of climbing spread across terrain that looks deceptively gentle from a distance.
That's the thing about the South Downs. There are no Everest moments. Instead it's relentless short, sharp rollers that accumulate through the night and into the next morning, grinding down legs that felt fine at mile 50. The final 25 miles — from Housedean Farm through Alfriston, over to Jevington and down into Eastbourne — have ended a lot of races that were still alive on paper.
Conditions tomorrow are as good as it gets for a hundred-miler. Dry, 22°C at peak, light winds, and nearly 17 hours of daylight. Very similar to last June, which produced both course records. There is no weather excuse available.
The men's race: Tibbs's third attempt
Hugh Tibbs has finished second here twice. In 2024 he ran 14:46. In 2025 he came back and ran 14:13 — half an hour faster — and still couldn't win. Mark Darbyshire beat him to a new course record of 13:42.
Since then, Tibbs has been busy. He won the Arc of Attrition in January. He set the British 100-mile trail record at Autumn 100 in October — 13:03:59, the fastest trail 100 ever run on UK soil. He holds the North Downs Way 50 course record. He is the favourite, and it is hard to argue otherwise.
Behind him the competition is genuine. Simon Withers pushed Tibbs to within minutes at the Arc of Attrition and has had a strong spring. Henry Hart brings serious road speed — 2:18 marathon, British 100km champion in 6:37 — and is a real sub-14-hour threat if his legs convert to chalk. Joseph Turner has been winning Centurion races across the board this year and carries a 12:52 100-mile PB.
Matt Hammerton won the South Downs Way 50 in April — the first 50 miles of today's route, run fast. David Green was second at that same race in 5:51, third-fastest ever on that course, and backed it up with second place at the 2025 Autumn 100. Specific prep matters out here.
Darbyshire doesn't appear to be defending. The course record is waiting.
The race also carries the British Trail Running Championships at Ultra Distance, which adds a title within the title for UK-based athletes — and raises the intensity across the board.
The women's race: even more interesting
Maryline Nakache won the Marathon des Sables Legendary a few weeks ago. All six stages, by nearly three and a half hours. Now she's making her SDW100 debut. She's a three-time MDS champion, ranked fourth in the World Trail Majors standings, and she's coming here fresh off the most dominant performance the Sahara race has seen in years.
How she handles a single-effort hundred-miler on damp English chalk — after pouring everything into six days of Saharan heat — is the race's central question.
Sarah Webster is the current world 24-hour record holder. Her 278km effort last year included a sub-14-hour 100-mile split, which is a serious number by any standard. Like Hart in the men's race, the open question is whether her extraordinary flat-terrain endurance transfers to trail. There's every reason to think it might.
Then there's Robyn Cassidy, who won the Lakeland 100 and the Dragons Back Race. If the international names underperform — and they sometimes do on unfamiliar courses — Cassidy is exactly the kind of experienced British trail runner who steps into that gap.
Nicole Bitter (three-time winner each at Rocky Raccoon 100 and Javelina Jundred, multiple Western States top-10s), Imo Boddy, and Laura Nevill round out a women's field that is the deepest this race has assembled. Last year, three women broke 17 hours for the first time in SDW100 history. That bar may move again.
When to follow
The lead men will likely finish somewhere between 13 and 15 hours — putting them into Eastbourne between 18:30 and 20:30 Saturday evening. The women's winner is probably 30 to 60 minutes behind that. Centurion Running has live tracking at centurionrunning.com throughout.
If you've got someone in your following list on Crewed, your pre-race notification is already set for 30 minutes before the gun.
More soon — there's a lot of racing to cover this month.