Ultra Trail Bosques del Sur vs Ultra Trail Gredos
Ultra Trail Bosques del Sur (70km, 3700m D+) vs Ultra Trail Gredos (71km, 2322m D+). Side-by-side comparison: distances, elevation, difficulty, mandatory gear and registration. Which one suits you best?
Advanced 
Advanced Physical profile
| Ultra Trail Bosques del Sur | Ultra Trail Gredos | |
|---|---|---|
| Date | 30 May 2026 | 19 September 2026 |
| Terrain | Trail | Mountain |
| Difficulty | Advanced | Advanced |
| Max elevation gain | 3,700m D+ | 2,322m D+ |
| Max ITRA | 3 | — |
Distances — Ultra Trail Bosques del Sur
| Name | Km | D+ | ITRA | Max Time |
|---|---|---|---|---|
| Ultra 70K | 70 | 3,700 | 3 | 17h |
| Marathon 42K | 42 | 2,438 | 1 | 10h |
| Half 21K | 21 | 1,190 | — | 5h |
| Mini 10K | 10 | 600 | — | 3h |
| Kids 4K | 4 | 100 | — | 1h 30min |
Distances — Ultra Trail Gredos
| Name | Km | D+ |
|---|---|---|
| Ultra de Gredos 71K | 71 | 2,322 |
| Gran Trail de Gredos 54K | 54 | 1,341 |
| Maratón de Gredos 43K | 43 | 1,347 |
| Skyline de Gredos 33K | 33 | 691 |
| Media Maratón de Gredos 20K | 20 | 472 |
| 10K de Gredos | 10 | 168 |
Logistics & costs
| Ultra Trail Bosques del Sur | Ultra Trail Gredos | |
|---|---|---|
| Location | Cazorla, Andalusia | Hoyos del Espino, Ávila, Castile and Leon |
| Distance between venues | 330 km | |
| Registration opens | 16 February 2026 | — |
| Registration closes | — | 19 August 2026 |
| Mandatory Gear | 6 mandatory items | 4 mandatory items |
| Official website | Visit | Visit |
Pack 360 — Services
Registration
Ultra Trail Bosques del Sur
No recommendations
Ultra Trail Gredos
No recommendations
Accommodation
Ultra Trail Bosques del Sur
No recommendations
Ultra Trail Gredos
No recommendations
Gear
Ultra Trail Bosques del Sur
-
Salomon Speedcross 6Recommended for bothSalomon
Ultra Trail Gredos
- Salomon Speedcross 6Recommended for both
Salomon
-
Petzl Actik CorePetzl
-
-
Gore Wear R7 GTX ShakedryGore Wear
Nutrition
Ultra Trail Bosques del Sur
-
Bocadillo de Guayaba Gourmet LatinoGourmet Latino
Ultra Trail Gredos
-
Maurten Gel 100Maurten
-
Precision Fuel & Hydration PH 1500Precision Fuel & Hydration
-
-
Dátiles Medjool DorimedDorimed
Transport
Ultra Trail Bosques del Sur
No recommendations
Ultra Trail Gredos
No recommendations
Car Rental
Ultra Trail Bosques del Sur
-
Recommended for both -
Recommended for both
Ultra Trail Gredos
- Recommended for both
- Recommended for both
Insurance
Ultra Trail Bosques del Sur
No recommendations
Ultra Trail Gredos
No recommendations
Body Care
Ultra Trail Bosques del Sur
-
Julbo AerospeedJulbo
-
Buff CoolNet UV+Buff
-
Salomon Cross VisorSalomon
Ultra Trail Gredos
-
Compeed Ampollas Medianas DuploCompeed
-
Lurbel Desafío FourLurbel
Sun Protection
Ultra Trail Bosques del Sur
-
Recommended for both -
Recommended for both
Ultra Trail Gredos
- Recommended for both
-
Piz Buin Mountain SPF 50+Piz Buin
- Recommended for both
Summary
If you're looking for a longer distance, Ultra Trail Gredos is the choice. If you prefer a shorter and more accessible race, consider Ultra Trail Bosques del Sur. In terms of elevation gain, Ultra Trail Bosques del Sur is the more demanding option. Both races offer a complete Pack 360 with everything you need for race day.
Frequently asked questions
Which is harder, Ultra Trail Bosques del Sur or Ultra Trail Gredos?
When does each race take place?
How many distances does each race offer?
What type of terrain does each race have?
Do I need the same mandatory gear for both?
Plan your race
Compare Spain's best trail running races side by side. Analyze distances, elevation, registration prices, mandatory gear and the complete Pack 360 to make the best decision.