Irati Trail vs La Osera
Irati Trail (30km, 2000m D+) vs La Osera (45km, 2300m D+). Side-by-side comparison: distances, elevation, difficulty, mandatory gear and registration. Which one suits you best?
Advanced
AdvancedPhysical profile
| Irati Trail | La Osera | |
|---|---|---|
| Date | 6 June 2026 | 16 May 2026 |
| Terrain | Mountain | Mountain |
| Difficulty | Advanced | Advanced |
| Max elevation gain | 2,000m D+ | 2,300m D+ |
Distances — Irati Trail
| Name | Km | D+ |
|---|---|---|
| Irati Trail 30K | 30 | 2,000 |
Distances — La Osera
| Name | Km | D+ |
|---|---|---|
| Marathon 45K | 45 | 2,300 |
| Half Marathon 25K | 25 | 1,300 |
| Sprint Trail 12K | 12 | 600 |
| Hiking 12K | 12 | 600 |
Logistics & costs
| Irati Trail | La Osera | |
|---|---|---|
| Location | Ezcároz, Navarre | Paterna del Madera, Albacete, Castile-La Mancha |
| Distance between venues | 490 km | |
| Registration opens | — | — |
| Registration closes | — | — |
| Mandatory Gear | 0 mandatory items | 0 mandatory items |
| Official website | Visit(opens in a new tab) | Visit(opens in a new tab) |
Pack 360 — Services
Registration
Irati Trail
No recommendations
La Osera
No recommendations
Accommodation
Irati Trail
No recommendations
La Osera
No recommendations
Gear
Irati Trail
Recommended for both
La Osera
- Recommended for both
Nutrition
Irati Trail
Recommended for both
La Osera
- Recommended for both
Gourmet Latino Guava Sandwich(opens in a new tab)Gourmet Latino
Transport
Irati Trail
No recommendations
La Osera
No recommendations
Car Rental
Irati Trail
Recommended for both
La Osera
- Recommended for both
Insurance
Irati Trail
No recommendations
La Osera
No recommendations
Body Care
Irati Trail
Squirrel's Nut Butter Anti-Chafe Cream(opens in a new tab)Recommended for bothSquirrel's Nut Butter
Recommended for both
La Osera
After Bite Xtra Gel(opens in a new tab)After Bite
Leukotape P Sports Tape(opens in a new tab)BSN Medical (Leukotape)
- Squirrel's Nut Butter Anti-Chafe Cream(opens in a new tab)Recommended for both
Squirrel's Nut Butter
- Recommended for both
Sun Protection
Irati Trail
Recommended for both
Recommended for both
La Osera
- Recommended for both
- Recommended for both
Terrain and elevation
Both races share the same terrain classification (Mountain). On its longest distance, Irati Trail climbs around 67m per km versus 51m/km on the other race — the higher that ratio, the steeper and more technical the climbs tend to be.
Location and travel
Irati Trail (Navarre) and La Osera (Castile-La Mancha) sit roughly 490km apart — worth factoring into travel plans if you're weighing both for the same season.
Entry price
La Osera is the cheaper entry, starting from €25 versus €39 for Irati Trail — a €14 gap on the entry-level distance.
Time of year
Irati Trail runs in June and La Osera in May, so both fit in the same season if you want to race them separately. Irati Trail falls right in its region's recommended window.
Mandatory gear
The two mandatory gear lists don't overlap at all.
Summary
If you're looking for a longer distance, La Osera is the choice. If you prefer a shorter and more accessible race, consider Irati Trail. In terms of elevation gain, La Osera 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, Irati Trail or La Osera?
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