Winter 50 Miler.
The Winter 50 Miler is a big February loop through the Lincolnshire Wolds. The hills stay low; what makes it hard is what the month adds, namely frost, biting wind and very little daylight. Your preparation should aim at those rather than at long climbs.
Winter 50 Miler 2027: Course, Elevation & Route Profile
It starts early in the morning at Swallow Village Hall, from where the classic loop heads through the Wolds and follows the historic Viking Way. The climbs crowd into the opening: four come before kilometre 22, among them the steepest from kilometre 16, with ramps just under ten percent, and the longest from kilometre 20, at a little over two kilometres. The highest ground of the day, at around 150 metres, also arrives early, before kilometre 13.
From kilometre 44 the picture changes. The course now stays lower, mostly below 90 metres, and between kilometres 47 and 70 there are only small waves rather than any longer climb. Only then do two last hills appear, the second from kilometre 75 lifting you back to almost 120 metres before the loop drops to the height of the start.
The race takes its character from the season, though. A February day here means freezing temperatures, wind and short light, and the 18-hour limit carries the last finishers towards midnight. Four fully stocked aid stations break up the loop, backed by medical support and live GPS trackers.
| Start | Length | Ø | Max. | Gain | Cat. |
|---|---|---|---|---|---|
| km 2.3 | 1 km | 3.6 % | 4.9 % | +36 m | — |
| km 9.7 | 1.9 km | 3.7 % | 7.9 % | +68 m | — |
| km 15.9 | 1.1 km | 5.3 % | 9.9 % | +59 m | — |
| km 20 | 2.2 km | 3.6 % | 7.6 % | +80 m | Cat. 4 |
| km 33 | 0.9 km | 3.9 % | 5.2 % | +33 m | — |
| km 46.7 | 0.9 km | 4.6 % | 6.8 % | +42 m | — |
| km 69.9 | 1 km | 4 % | 5.1 % | +40 m | — |
| km 75.2 | 1 km | 4.3 % | 6.5 % | +41 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 Winter 50 Miler.
Start under control
No climb on this loop is long or steep enough to slow you down by itself, and that is exactly the trap. The biggest gains 80 metres, so over the first 22 kilometres every hill feels harmless and fresh legs run all of them too fast. Walk the steeper pieces from the very start, above all the ramps from kilometre 16, and stay at an effort where you could still hold a conversation.
Hold your rhythm
The day is decided between kilometres 47 and 70. There is no clear hill here to hand you a natural walking break, only the constant up and down that asks for even running. If you are still moving well through this stretch, the last two climbs will not undo you.
Spend what is left
Cold sharpens every early mistake. Once you are reduced to walking you generate less heat and start to chill in the frost and wind, and every halt at an aid station makes that worse. Keep the stops short, but eat at each one even if you are not hungry yet.
Training plan for Winter 50 Miler: 12-week build
Build the base
Expect roughly 10 to 16 hours as an age-group runner. The effort is almost entirely easy aerobic: the course offers few hard spikes, but it also never quite stops working the muscles with small shifts between up and down. So the foundation here is duration, not speed and not vertical in one go.
Train race pace
Your key sessions are long runs on rolling ground, where many short hills are spread across the whole distance rather than one big one. Put two of them on consecutive days so that you learn to run evenly on tired legs on the second. That is what the grinding stretch after kilometre 47 demands, and the hills at kilometres 70 and 75 then meet you many hours in, so deliberately place short climbs at the end of your longest runs.
Rehearse the course
Your build falls in the same winter you race in, which works in your favour. Schedule long runs into darkness and bad weather on purpose, test head torch, layers and gloves in real cold, and find out what you need to keep dry.
Arrive fresh
Practise eating as well. Between the four aid stations you depend for long spells on what you carry, and getting cold bars down with cold fingers only works with routine. Use your long runs to rehearse alternating walking and running too, so that on race day it is a plan rather than an emergency.
Courses
Download the Winter 50 Miler course as a GPX file for your watch or bike computer.
Let YOUB adapt your plan for Winter 50 Miler 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 Winter 50 Miler.
How long is Winter 50 Miler?
Winter 50 Miler 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 Winter 50 Miler have?
Winter 50 Miler has around 838 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 Winter 50 Miler?
Winter 50 Miler is classified as Rolling, averaging 10.4 vertical metres per kilometre. 35% of the route is flat, 34% climbs moderately (2 to 6%) and 0% is steeper than 6%.
What climbs does Winter 50 Miler have?
The hardest climb of Winter 50 Miler starts at kilometre 20, runs for 2.2 km at an average of 3.6% and gains 80 metres. Cycling-convention rating: Cat. 4. 8 climbs are mapped in total.
Is Winter 50 Miler a loop course?
Yes, Winter 50 Miler is laid out as a loop: start and finish are in the same place.
Is there a GPX file for the Winter 50 Miler course?
Yes. The Winter 50 Miler 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 Winter 50 Miler?
Preparation for Winter 50 Miler should account for 80.47 km, 838 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 Winter 50 Miler?
The pacing strategy for Winter 50 Miler should reflect 80.47 km, 838 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 Winter 50 Miler take place?
Winter 50 Miler takes place on February 20, 2027.
Where does Winter 50 Miler take place?
Winter 50 Miler takes place in Beelsby, United Kingdom.
How do I register for Winter 50 Miler?
Registration runs through the organiser: yellowbellyultras.co.uk. YOUB shows you the course, elevation profile and training plan for your preparation.
