South Downs Way 50M 2027
The forecast arrives five days before the start.
Here you'll find the elevation profile, an estimated finish time based on your UTMB Index and details of the 7 aid stations to plan your nutrition and hydration segment by segment.
What's your time based on your UTMB?
Times estimated by the RAVIT model, learned from real ultra-trail finish times. Enter your UTMB Index (utmb.world) to get a personalized estimate.
Cut-off times and crew - South Downs Way 50M · 2027
Data from the official race rules, checked for every edition. The race rules prevail. Positions are interpolated along the GPX track and are a guide, not official course marking.
What you'll find at each aid station
| Product | Botolphskm 17.5 | Saddlescombe Farmkm 27.4 | Housedean Farmkm 43.5 | Southeasekm 54.7 | Alfristonkm 67.0 | Jevingtonkm 73.6 | FInishkm 78.9 |
|---|---|---|---|---|---|---|---|
| Water | available | available | available | available | available | available | available |
| Brand products | unavailable | unavailable | unavailable | unavailable | unavailable | unavailable | available |
La feuille de ton assistance pour South Downs Way 50M · 2027
Les règles d'assistance de cette course ne sont pas encore connues : tu marqueras tes rendez-vous toi-même.
Recto, verso et planche d'étiquettes, en PDF : l'exemple d'une coureuse de l'UTMB.
Elevation profile
The course and its aid stations
South Downs Way 50M: times, aid-station stops and fuelling needs by UTMB® Index
Between a UTMB® Index of 500 and 800, the estimated finish time on this race runs from 10h55 to 6h50, and the aid-station stop budget from 0h24 to 0h08. The longer the race, the more stops weigh: this is time you should plan to spend standing still, not only running.
Source
Below a UTMB® Index of roughly 395, the overall cut-off of 13h00 is no longer reachable at the estimated pace.
| UTMB® Index | Estimated time | Of which stops | Night hours | Carbs | Fluid | Sodium | Cut-off margin |
|---|---|---|---|---|---|---|---|
| 500 | 10h55 | 0h24 | — | 655 g | 7.6 L | 5,457 mg | +2h05 |
| 550 | 10h04 | 0h20 | — | 604 g | 7.1 L | 5,035 mg | +2h56 |
| 600 | 9h20 | 0h16 | — | 560 g | 6.5 L | 4,665 mg | +3h40 |
| 650 | 8h39 | 0h14 | — | 519 g | 6 L | 4,321 mg | +4h21 |
| 700 | 7h56 | 0h11 | — | 476 g | 5.6 L | 3,970 mg | +5h04 |
| 750 | 7h20 | 0h10 | — | 440 g | 5.1 L | 3,669 mg | +5h40 |
| 800 | 6h50 | 0h08 | — | 410 g | 4.8 L | 3,420 mg | +6h10 |
Figures based on 60 g of carbohydrate, 700 mL of fluid and 500 mg of sodium per hour, "average" preparation and mild conditions (15–25 °C). Above 25 °C, count on roughly 900 mL/h and 700 mg/h. Carbohydrate intake is trained: 60 g/h is a floor, 90 g/h assumes a glucose-fructose blend and a gut used to it.
Other trails worth preparing for
- Winter 5588 km · 2,006 m D+ · December 5, 2026
- Arc of Attrition - Arc 100K83 km · 2,588 m D+ · January 23, 2027
- Arc of Attrition - Arc 50K49 km · 1,329 m D+ · January 24, 2027
- Granite Peaks Ultra 50k52 km · 3,896 m D+ · April 17, 2027
- Ultra-Trail Snowdonia - Eryri 80K79 km · 2,547 m D+ · May 14, 2027
- Eryri by UTMB® - Eryri 80K®79 km · 2,547 m D+ · May 14, 2027
- Eryri by UTMB® - Eryri 50K®58 km · 3,407 m D+ · May 15, 2027
- Ultra-Trail Snowdonia - Eryri 50K58 km · 3,407 m D+ · May 15, 2027
- Ultra-Trail Snowdonia - Eryri 100K107 km · 5,518 m D+ · May 15, 2027
Sources and method
- Time projection — times by UTMB Index are taken from the actual splits of runners in each level band on previous editions of this race, aid station stops included. No formula is used as long as these results exist.
- Trail nutrition — hourly targets for carbohydrate, fluid and sodium follow the commonly accepted ultra-endurance guidance. La Clinique du Coureur — Fuelling in trail running
- Course, aid stations and cut-offs — taken from the event's official rules, which prevail in case of any discrepancy. Official site — South Downs Way 50M
Weather for South Downs Way 50M
The weather for South Downs Way 50M will appear here as soon as the forecast models reach that date, around five days before the start: feels-like temperature, rain, snow, wind and storms, section by section and at your passage time.
Detailed weather for South Downs Way 50M, hour by hour on the courseFrequently asked questions
How many checkpoints?
South Downs Way 50M has 7 checkpoints: 1 aid station and 6 water points. Details are in the two tables above.
What's the longest segment without aid?
The one leading to Botolphs: 17.5 km and 360 m elevation gain. That's the one to load up for first.
How do I find the exact location of an aid station?
The Google Maps icon in the “Access” column opens the aid station's location: handy for planning your crew's routes.
What distance and elevation gain?
South Downs Way 50M is 79 km long with 1754 m of elevation gain.
How long to finish?
With a UTMB Index of 600 (average runner), the estimated time is around 9h20 for South Downs Way 50M.
What's the weather forecast?
The weather for South Downs Way 50M will be published on this page around five days before the start, once the forecast models reach the race date. It will be detailed section by section: feels-like temperature, rain, snow, wind and storms.
Want to stack the odds in your favor for South Downs Way 50M?
In 2 minutes, RAVIT generates your complete plan: segment-by-segment time, carbs, water and sodium at every aid station, printable roadbook.
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