Centurion North Downs Way 50.
The Centurion North Downs Way 50 follows the National Trail from Farnham in Surrey to Knockholt Pound on the edge of Greater London, 50 miles in one direction. The first half lets you run, the second stacks up the hardest climbs, and preparing for that uneven split is what this race asks of you.
Centurion North Downs Way 50 2027: Course, Elevation & Route Profile
From the start in Farnham the course stays on the North Downs Way, leaving it only for the final half mile to the finish. The opening 16 kilometres are gentle and end at around 50 metres, the lowest point of the day. Three short climbs between kilometres 17 and 22 then lift you onto high ground near 200 metres, where you stay for about ten kilometres.
At kilometre 35 the character changes. The trail falls to just over 60 metres within two kilometres, and from kilometre 39 comes the biggest climb of the race, almost 160 metres of gain in under a mile. Kilometre 47 brings the steepest ramp, averaging nearly 14 percent, followed by a longer, gentler climb at kilometre 56, a shorter one at kilometre 62 and one more steep kilometre at 68. Each time you hand the height straight back, so the second half reads like a saw blade.
Four fifths of the course are trail and the rest road, and along the way you pass Guildford, Box Hill, Reigate Hill, Merstham and Oxted. From kilometre 70 the ground rolls along above 200 metres until the finish at Knockholt Pound. The race is the second in the 50-mile Grand Slam, and the route matches the first 50 miles of the NDW100.
| Start | Length | Ø | Max. | Gain | Cat. |
|---|---|---|---|---|---|
| km 17.3 | 1.4 km | 4.3 % | 11.2 % | +58 m | — |
| km 19.6 | 0.7 km | 7.7 % | 15.2 % | +56 m | — |
| km 21.2 | 0.8 km | 6.6 % | 13.9 % | +50 m | — |
| km 39.1 | 1.5 km | 10.9 % | 33.2 % | +158 m | Cat. 4 |
| km 47.3 | 0.8 km | 13.6 % | 24.1 % | +112 m | Cat. 4 |
| km 55.9 | 1.7 km | 6.1 % | 12.2 % | +101 m | Cat. 4 |
| km 62.4 | 1.1 km | 6.7 % | 18.5 % | +74 m | — |
| km 68 | 1.1 km | 9.8 % | 18 % | +103 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 North Downs Way 50.
Start under control
On this course half the distance is not half the work. Up to kilometre 35 only three short climbs get in your way; from kilometre 39 there are five more, each harder than anything before it. So budget by climbs rather than by kilometres, and let the high section feel as easy as it is instead of banking time there.
Hold your rhythm
The race is decided between kilometres 47 and 70. Walk the steep ramps without exception and skip the urge to run them, because you need those muscles straight afterwards: after the ramp at kilometre 47 you lose around 130 metres between kilometres 50 and 54, and that descent costs your quads more than the climb cost your lungs.
Spend what is left
The biggest trap is the drop from kilometre 35. It runs easily, but letting it roll sends you into the largest climb of the day on heavy legs. If you are planning close to the 13-hour cut-off, allow for the second half taking clearly longer than the first. The last ten kilometres are runnable, and only those who can still run gain time there.
Training plan for Centurion North Downs Way 50: 12-week build
Build the base
Expect roughly 9 to 13 hours depending on your fitness. That is a long aerobic effort without a rhythm: only a fifth of the course is flat, and the rest keeps tipping up and down, alternating between jogging, walking and controlled downhill running.
Train race pace
The hard work only starts after about 40 kilometres, which is where many training runs have already ended. Build your long runs so the climbing sits in the final third, and keep the first hour deliberately easy. That is the only way to learn how a steep ramp on fresh legs differs from one six hours in.
Rehearse the course
The core session is a set of short, steep climbs of around 100 metres, hiked briskly several times over and each followed straight away by running back down. That alternation mirrors kilometres 39 to 70 and toughens your quads for the descents that sit between the race's climbs. Since a fifth of the distance is on road, include stretches of tarmac in the long sessions too.
Arrive fresh
May here averages 9 C and 65 mm of rain, so heat is not the issue. Getting cold is: anyone switching between running and walking for hours should have tested their clothing in exactly that pattern, wet conditions included. Six aid stations work out at a little over eleven kilometres per section on average, so practise carrying your own food and drink on long runs and taking it to a plan.
Courses
Download the Centurion North Downs Way 50 course as a GPX file for your watch or bike computer.
Let YOUB adapt your plan for Centurion North Downs Way 50 dynamically
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Everything about Centurion North Downs Way 50.
How long is Centurion North Downs Way 50?
Centurion North Downs Way 50 is 80.47 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 North Downs Way 50 have?
Centurion North Downs Way 50 has around 1,694 m of elevation gain over 80.47 km. That affects pacing, muscular load, and preparation for late-race sections.
What is the route profile of Centurion North Downs Way 50?
Centurion North Downs Way 50 is classified as Hilly, averaging 21 vertical metres per kilometre. 20% of the route is flat, 32% climbs moderately (2 to 6%) and 8% is steeper than 6%.
What climbs does Centurion North Downs Way 50 have?
The hardest climb of Centurion North Downs Way 50 starts at kilometre 39.1, runs for 1.5 km at an average of 10.9% and gains 158 metres. Cycling-convention rating: Cat. 4. 8 climbs are mapped in total.
Is Centurion North Downs Way 50 a loop course?
No, Centurion North Downs Way 50 is a point-to-point course: start and finish are in different places.
Is there a GPX file for the Centurion North Downs Way 50 course?
Yes. The Centurion North Downs Way 50 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 North Downs Way 50?
Preparation for Centurion North Downs Way 50 should account for 80.47 km, 1,694 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 North Downs Way 50?
The pacing strategy for Centurion North Downs Way 50 should reflect 80.47 km, 1,694 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 North Downs Way 50 take place?
Centurion North Downs Way 50 takes place on May 15, 2027.
Where does Centurion North Downs Way 50 take place?
Centurion North Downs Way 50 takes place in Farnham, United Kingdom.
How do I register for Centurion North Downs Way 50?
Registration runs through the organiser: centurionrunning.com. YOUB shows you the course, elevation profile and training plan for your preparation.
