Anchorage races on June 19, 2027, with a marathon, half marathon and a schedule shaped by the summer solstice.
Four distances, tiered entry fees and a children's race feature in the May event in the Basque capital.
Four days in Espadán bring two mountain races and a team adventure, with further details still to be announced.
Two distances and entries from €27 for mountain racing in Confrides on May 8, with registration scheduled for February.
From May 6 to 8, La Palma will host four trail racing formats, each presenting a different mountain challenge.
Three days of coastal trail racing in Menorca, eight formats and a waiting list that does not guarantee entry.
Two cycling routes through vineyards and a Sunday of running: the April race weekend taking shape in Jerez.
Four routes cross Mallorca’s mountains in April, including a 122-kilometre ultra and a shared finish in Peguera.
Three distances are scheduled for February 2027, with marathon fees published and other race details still pending.
Caprés hosts long and short trail races, relays and a walking event on 17 October, starting at San Jerónimo Hermitage.
Two distances and a finish at Plaza del Pilar: the available details for Zaragoza’s April 18 race day.
Málaga's November 8 race offers two distances, with key registration and travel details still to be verified.