London 2 Brighton Ultra Challenge.
The longest distance at the London 2 Brighton Ultra Challenge takes you 100 km from Twickenham to Brighton, at your own pace, through the day and the night. Height is not what makes it hard; the order is, because the toughest climb only arrives just before km 90, on legs that stopped being fresh long ago.
London 2 Brighton Ultra Challenge 2027: Course, Elevation & Route Profile
The start in Twickenham sits only a few metres above sea level, and the first twelve kilometres stay almost level. After that the ground rises in steps: around km 25 you are at about 120 m, and after a short dip the first longer climb from km 28 lifts you on to nearly 200 m, the high point for a long while.
No single big hill comes next, just a long run of ups and downs on the trail. Between km 34 and 88 ramps and dips alternate, mostly between 40 and 140 m of altitude. The short steep pitches at km 66 and 71 mainly break your rhythm, and after them the course stays low for a long time. Because this distance runs through the night, depending on your pace all of this section may fall in the dark.
At km 88.5 the quiet ends. Over 1.4 km the course averages almost ten percent and takes you back up to about 200 m, the highest point of the whole journey. It then drops quickly to below 100 m before the final climb begins at km 94.6. The finish in Brighton lies at a little over 120 m, so the closing stretch does not run down to the sea.
| Start | Length | Ø | Max. | Gain | Cat. |
|---|---|---|---|---|---|
| km 28.3 | 1 km | 5.2 % | 6.1 % | +53 m | — |
| km 44 | 1.2 km | 3.2 % | 4.7 % | +37 m | — |
| km 55.3 | 1.2 km | 3.9 % | 7.6 % | +46 m | — |
| km 59.3 | 1 km | 5 % | 6.4 % | +50 m | — |
| km 65.9 | 0.8 km | 7.7 % | 12.3 % | +62 m | — |
| km 71.3 | 0.6 km | 6.9 % | 10.1 % | +38 m | — |
| km 88.5 | 1.4 km | 9.5 % | 20.7 % | +133 m | Cat. 4 |
| km 94.6 | 1.4 km | 4.3 % | 8.2 % | +60 m | — |
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 London 2 Brighton Ultra Challenge 2027.
Start under control
Split the course into three sections: the level stretch to km 13, the long rolling middle to km 88, and the final twelve kilometres, where it gets serious again. The third is the shortest and still deserves the largest share of your reserves.
Hold your rhythm
The trap sits right at the start. Nothing slows you down on the level opening, and a pace that feels effortless there is missing later in the night. Set off the way you still want to be moving after 70 km, and walk every ramp through the middle section rather than running it. With this many small waves the saving adds up over 50 km.
Spend what is left
The challenge is decided between km 88 and 93. Hike the steep climb evenly and without stopping, and do not underrate the descent behind it: more than 100 m down on tired thighs can easily cost more than the way up. Only once the last climb is behind you should you spend whatever is left.
Training plan for London 2 Brighton Ultra Challenge 2027: 12-week build
Build the base
Depending on how much you run and how much you walk, expect around 12 to 24 hours on your feet. This is a calm, continuously aerobic effort with no hard spikes. The limits here are not heart and lungs but legs, stomach and missing sleep.
Train race pace
The key session is therefore the long one, not the fast one. Build long runs and run-hikes over months, and now and then stack two long days back to back so that carrying on with loaded legs feels familiar. Use those days to rehearse regular eating and drinking across many hours, because the long middle section from km 34 to 88 depends on exactly that.
Rehearse the course
Since the hardest part comes late, put the climbing at the end of the session. Add steep hills of ten to fifteen minutes to the last hour of your long days and practise a strong uphill hike you can hold evenly. A quick descent follows straight after, and targeted strength work for the thighs over the months helps you survive it on tired legs.
Arrive fresh
The night needs preparation of its own. At least one long session that runs into the dark with a headtorch shows you how pace, footing on the trail and appetite change when you are tired. Do it on uneven ground, not on a lit road.
Courses
Download the London 2 Brighton Ultra Challenge 2027 course as a GPX file for your watch or bike computer.
Let YOUB adapt your plan for London 2 Brighton Ultra Challenge dynamically
Ben connects your goal, the course, current load, recovery, and calendar. Your plan stays pointed at race day even when real life is not perfectly plannable.
Everything about London 2 Brighton Ultra Challenge.
How long is London 2 Brighton Ultra Challenge 2027?
London 2 Brighton Ultra Challenge 2027 is 100 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 London 2 Brighton Ultra Challenge 2027 have?
London 2 Brighton Ultra Challenge 2027 has around 1,322 m of elevation gain over 100 km. That affects pacing, muscular load, and preparation for late-race sections.
What is the route profile of London 2 Brighton Ultra Challenge 2027?
London 2 Brighton Ultra Challenge 2027 is classified as Rolling, averaging 13.2 vertical metres per kilometre. 34% of the route is flat, 34% climbs moderately (2 to 6%) and 2% is steeper than 6%.
What climbs does London 2 Brighton Ultra Challenge 2027 have?
The hardest climb of London 2 Brighton Ultra Challenge 2027 starts at kilometre 88.5, runs for 1.4 km at an average of 9.5% and gains 133 metres. Cycling-convention rating: Cat. 4. 8 climbs are mapped in total.
Is London 2 Brighton Ultra Challenge 2027 a loop course?
No, London 2 Brighton Ultra Challenge 2027 is a point-to-point course: start and finish are in different places.
Is there a GPX file for the London 2 Brighton Ultra Challenge 2027 course?
Yes. The London 2 Brighton Ultra Challenge 2027 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 London 2 Brighton Ultra Challenge 2027?
Preparation for London 2 Brighton Ultra Challenge 2027 should account for 100 km, 1,322 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 London 2 Brighton Ultra Challenge 2027?
The pacing strategy for London 2 Brighton Ultra Challenge 2027 should reflect 100 km, 1,322 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 London 2 Brighton Ultra Challenge 2027 take place?
London 2 Brighton Ultra Challenge 2027 takes place on May 29, 2027.
Where does London 2 Brighton Ultra Challenge 2027 take place?
London 2 Brighton Ultra Challenge 2027 takes place in Twickenham, United Kingdom.
Which distances does London 2 Brighton Ultra Challenge 2027 offer?
London 2 Brighton Ultra Challenge 2027 offers 7 distances — 100 km: 100 km; 75 km: 75 km; 58 km: 58 km; 42 km: 42 km (Marathon); 33 km: 33 km; 29 km: 29 km and 1 more.
How do I register for London 2 Brighton Ultra Challenge 2027?
Registration runs through the organiser: ultrachallenge.com. YOUB shows you the course, elevation profile and training plan for your preparation.
