Zegama-Aizkorri — Run Time

Zegama-Aizkorri Countdown

38

Days

04

Hrs

12

Min

19

Sec

Next Race

May 17, 2026

39

days to go

One of the most iconic and technical skyrunning races in the world. The marathon-distance course from Zegama climbs to the summit of Aizkorri at 1,528m through the Basque mountains, featuring extreme gradients, rocky ridgelines, and passionate local crowds.

ITRA 3 Endurance Points

Est.

2002

Distance

42km / 26mi

Course

Loop

Surface

Mountain Trail

Elev. Gain

2700m

Elev. Loss

2700m

Field Size

~500

When

May

Time Limit

10h

THE COURSE

Gain

+2700m

Loss

-2700m

MI 3

KM 4.8

Sancti Spiritu Climb

The brutal opening ascent from Zegama up through dense beech forest, gaining over 800m in the first few kilometers on steep, technical terrain.

ELEV: 950ft

MI 8

KM 12.9

Aizkorri Summit

The highest point of the course at 1,528m, the summit of Aizkorri offers panoramic views across the Basque mountains and marks the turnaround of the major climb.

ELEV: 1528ft

MI 13

KM 20.9

Aratz Ridge

A exposed ridgeline traverse at over 1,400m connecting the major peaks, with rocky scrambling sections and sweeping views into the Arantzazu valley.

ELEV: 1440ft

MI 18

KM 29

Arantzazu Sanctuary

A historic Basque sanctuary nestled in the limestone cliffs, providing a dramatic mid-race landmark as runners descend into the valley.

ELEV: 800ft

MI 25