A trail runner on a grassy ridge above a sea of clouds

Centurion North Downs Way 100

The Centurion North Downs Way 100 follows the North Downs Way through south-east England, crossing Surrey into Kent.

Prepare for Centurion North Downs Way 100

A plan built from your answers and your race date.

trail training plan

The Centurion North Downs Way 100 follows the North Downs Way through south-east England, crossing Surrey into Kent. It is a point-to-point route from Farnham to Ashford, mixing chalk ridge paths, wooded singletrack and farmland sections. The going is varied and rarely technical, but the ground rolls constantly under your feet.

The climbing comes as short, repeated pulls rather than long sustained ascents, which wears the legs down without ever forcing a hike-only section. Being point to point, it also means planning your travel back from the finish.

The formats

One format only.

Format	Distance	Vertical gain
103 miles	103 mi	3,350 m

Organizer information, checked on September 21, 2026 · centurionrunning.com

When to start

A build for this distance usually runs 12 to 24 weeks. Counted back from race day, that puts the start somewhere between February 15, 2027 and May 10, 2027.

These ranges are working conventions, not a research finding — no trial has compared plan lengths against each other. What matters more is that the plan was built for the weeks you actually have, rather than shrunk down from a longer one.

How to choose your start date

When to start

February 15, 2027

→ May 10, 2027

Worth reading before you enter

Races and distances Trail distances: what changes off the road Distance stops being the useful number. What decides a trail race is how long you are out, how much you climb, and how much the descents have wrecked your legs by the end. Read Training Eating and drinking: what’s proven, what isn’t This is where confident advice most often runs ahead of the evidence. Some of it is well tested. Some is opinion wearing a number. And one common habit can kill you. Read Races and distances When to start preparing your race Most plans fail before the first session, because the block started too late and everything had to be squeezed. Counting back from the date is the dullest and most useful thing you will do. Read

Questions

What is the date of Centurion North Downs Way 100 in 2027?

Centurion North Downs Way 100 is run on Saturday, August 7, 2027 from Farnham to Ashford. Date published by the organizer, checked on September 21, 2026.

How much climbing is there on the North Downs Way 100?

The single format covers 103 miles, or 166km, with 3,350m of ascent. The climbing arrives as short repeated pulls along the North Downs Way rather than as long sustained ascents through Surrey and Kent.

How should I train for the North Downs Way 100?

Build long runs on rolling trail, work specifically on descending, and complete at least one night run. Test your head torch, shoes and fuelling in summer conditions over genuinely long distances before race day.

Other races

This list keeps growing; it draws no line. A race that is missing is prepared for in exactly the same way.

Edale → Kirk Yetholm (Pennine Way) · United KingdomUltra Montane Winter Spine Jan 9 The full race covers 431km, with shorter Challenger and Sprint formats alongside it. Cornish coast · United KingdomUltra Arc of Attrition by UTMB Jan 22 The Arc of Attrition by UTMB is a winter ultra run along the Cornwall coast path in England. 1 km to 173 Worthing → Eastbourne · United KingdomUltra Centurion South Downs Way 50 Apr 10 The Centurion South Downs Way 50 covers the eastern half of the South Downs Way in Sussex, from Worthing Your race is not here? Tell us about your race You can prepare for it all the same. Any race, anywhere, and even a goal without a race.

Your race is on the calendar. Your plan should be too.

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