Winnipeg offers several distances, a favorable course and a chance to earn a Boston qualifying time.
Burriana hosts four race formats in June 2027, with Arenal beach at the heart of the festival.
Four distances, tiered entry fees and a children's race feature in the May event in the Basque capital.
From May 6 to 8, La Palma will host four trail racing formats, each presenting a different mountain challenge.
Getxo races on April 4, with three distances, a Fadura start and a course designed for running without major hills.
The León event is confirmed for April 4 with four race options, though some registration details still need clarification.
Two distances, separate start times and no Sunday bib collection: the key details for Zaragoza's March race.
The San Sebastián event features a 5K, a mass-participation 10K and a sub-45 race beside Zurriola beach.
Colón welcomes 5K and 10K runners for a charity event supporting people affected by road traffic accidents.
Three distances in an Andean setting: confirmed details of November’s race near Chimborazo.
Company teams race in Murcia on October 18, with two distances, a 9:30 a.m. start and bib collection on Saturday.
Swimming, cycling and running meet in the Pyrenees on June 27, with some technical details still to be confirmed.