Centurion South Downs Way 100.
The Centurion South Downs Way 100 covers the whole of the South Downs Way from Winchester to Eastbourne, 100 non-stop miles with 85 percent of them on trail. It never gets high, with the ridge sitting at around 200 metres, yet the total passes 3,600 metres of climbing. Preparing for it means preparing to drop and regain that height on tired legs.
Centurion South Downs Way 100 2027: Course, Elevation & Route Profile
The start is just outside Winchester, and the first four miles are a loop through the Matterley Estate before the route settles onto the eastward line of previous years. Until about 75 km the path rolls between roughly 70 and just over 200 metres. That has its cost, but most of it stays runnable, because the valleys are shallow and rarely break your rhythm for long.
Around 78 km the character changes: the course falls to about 20 metres and climbs straight back out, 127 metres in just under 1.4 km. Beyond the Washington aid station at mile 54 comes the steepest sustained ramp at about 89 km, then the longest at 100 km, 200 metres over a little more than three kilometres. Past Housedean at mile 76 there are still four ascents to go, the last two from 148 km and 153 km, before the drop into Eastbourne.
Underfoot it is mostly chalk, since this is a ridgeway through the rolling hills of southern England, broken by villages and passing forts, with views out to the coast. Only 15 percent is on road. Twelve aid stations divide the distance. This is the 16th running of the race, which belongs to the World Trail Majors series.
| Start | Length | Ø | Max. | Gain | Cat. |
|---|---|---|---|---|---|
| km 58.8 | 1.6 km | 7.5 % | 11.7 % | +120 m | Cat. 4 |
| km 78 | 1.4 km | 9.2 % | 22.6 % | +127 m | Cat. 4 |
| km 88.9 | 1.7 km | 9.7 % | 21.6 % | +161 m | Cat. 3 |
| km 99.7 | 3.2 km | 6.3 % | 15.8 % | +200 m | Cat. 3 |
| km 125.3 | 1.8 km | 7 % | 16 % | +126 m | Cat. 4 |
| km 135.7 | 2.3 km | 6.9 % | 15.9 % | +157 m | Cat. 4 |
| km 147.8 | 2.3 km | 8 % | 15.4 % | +179 m | Cat. 3 |
| km 153.3 | 1.6 km | 8 % | 14.1 % | +124 m | Cat. 4 |
Climb categories follow the road-cycling convention and rate the terrain itself (length and gradient) regardless of sport: Cat. 4 marks the easiest rated climbs, Cat. 1 the hardest, and HC (hors catégorie, “beyond categorization”) is reserved for the most brutal ascents. Short climbs below the Cat. 4 threshold stay unrated.
How to pace Centurion South Downs Way 100.
Start under control
Only a little over a sixth of the course is flat, and the rest splits about evenly between up and down. Nobody holds a fixed running pace here, so steer by effort: walk the ramps from the first hour, however absurdly short they feel, and keep the gentler ridge sections relaxed.
Hold your rhythm
The race is decided after Housedean. The four ascents between 125 km and 155 km add up to nearly 590 metres and arrive with more than three quarters of the distance already spent. For many starters that stretch also falls in the night. Anyone still hiking briskly here takes back the time that others spent too early.
Spend what is left
The biggest trap is the runnable opening 75 km, followed by the descents after it. Nearly a tenth of the course drops steeply, and letting your legs run away there is paid for in wrecked quads when the steep return climbs and the final downhill stretches into Eastbourne arrive.
Training plan for Centurion South Downs Way 100: 12-week build
Build the base
Typical age-group runners are out for about 22 to 30 hours, and 30 hours is also the cut-off. Nearly all of it is aerobic work, alternating running with brisk walking. Hard spikes hardly matter, but the many short climbs add up to serious leg fatigue.
Train race pace
The race turns beyond 100 km, where ramps of six to eight percent meet legs that have already done a long day. So you need less speed than the ability to power-hike 150 metres of ascent and start running again the moment it levels out.
Rehearse the course
That puts back-to-back long days on hilly trail at the centre of the plan, with the climbing weighted towards the second half of each session. Repeated climbs of 100 to 200 metres build the brisk uphill walk, and the descents that go with them prepare your quads for exactly the load the final third delivers. Run them deliberately when you are already tired.
Arrive fresh
A Saturday morning start in June means a full day, a night and often part of Sunday morning for most runners. So rehearse moving in the dark after many hours on your feet at least once, and test what you can still eat twelve or more hours in. Twelve aid stations break the race into stages, and your fuelling deserves testing in stages of the same kind.
Courses
Download the Centurion South Downs Way 100 course as a GPX file for your watch or bike computer.
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Everything about Centurion South Downs Way 100.
How long is Centurion South Downs Way 100?
Centurion South Downs Way 100 is 161 km long. That distance shapes how much aerobic endurance, pace durability, and race-specific work belong in the training plan.
How much elevation gain does Centurion South Downs Way 100 have?
Centurion South Downs Way 100 has around 3,626 m of elevation gain over 161 km. That affects pacing, muscular load, and preparation for late-race sections.
What is the route profile of Centurion South Downs Way 100?
Centurion South Downs Way 100 is classified as Hilly, averaging 22.7 vertical metres per kilometre. 18% of the route is flat, 33% climbs moderately (2 to 6%) and 9% is steeper than 6%.
What climbs does Centurion South Downs Way 100 have?
The hardest climb of Centurion South Downs Way 100 starts at kilometre 99.7, runs for 3.2 km at an average of 6.3% and gains 200 metres. Cycling-convention rating: Cat. 3. 8 climbs are mapped in total.
Is Centurion South Downs Way 100 a loop course?
No, Centurion South Downs Way 100 is a point-to-point course: start and finish are in different places.
Is there a GPX file for the Centurion South Downs Way 100 course?
Yes. The Centurion South Downs Way 100 course is on this page as a free GPX download — ready to import into Garmin, Wahoo, Komoot, Strava or any other app that reads GPX.
How should I prepare for Centurion South Downs Way 100?
Preparation for Centurion South Downs Way 100 should account for 161 km, 3,626 m of elevation gain, current training load, and available training time. An adaptive plan helps place key sessions without ignoring recovery and real life.
What pacing strategy works for Centurion South Downs Way 100?
The pacing strategy for Centurion South Downs Way 100 should reflect 161 km, 3,626 m of elevation gain, and your current fitness. Start controlled and keep margin for sections where the profile or fatigue makes target pace harder.
When does Centurion South Downs Way 100 take place?
Centurion South Downs Way 100 takes place on June 12, 2027.
Where does Centurion South Downs Way 100 take place?
Centurion South Downs Way 100 takes place in Winchester, United Kingdom.
How do I register for Centurion South Downs Way 100?
Registration runs through the organiser: centurionrunning.com. YOUB shows you the course, elevation profile and training plan for your preparation.
