with optional ascent of Irumagarrieta-Aiako Harria/Peñas de Aia
Transfer from Donostia-San Sebastián* to start of walk
Option 1: Starting from the old forge of Ola near the border town of Irún, almost at sea level, you climb through beech forest past the impressive Aitzondo waterfall, up a scenic gorge to the picnic site of Elurretxe and around the base of the granite crags of Peñas de Aia; you then descend to the San Antón Reservoir and over undulating hills and meadowland to the pretty town of Lesaka, traversed by a fast-flowing stream and with fine examples of the architecture typical of the region.
Option 2: Starting from the picnic site of Elurretxe at 500m, an optional ascent of Irumugarrieta, the first and most accessible of the three peaks of Aiako Harria/Peñas de Aia, and then around the base of the crags and descent to the San Antón Reservoir as above.
Overnight Lesaka
Distance/walking time/cumulative elevation gain:
Option 1: 20.5km / 6h 10min / 870m approx;
Option 2: 15.3km / 4h 30min / 410m approx + optional ascent of Aiako Harria/Peñas de Aia +3.4km /+1h 30min /+310m approx.