Marathon season has officially started, with the Berlin Marathon showcasing over a hundred events. Brands like R.A.D, Optimistic Runners, and Adidas have released new collections. R.A.D partnered with Tom Parker Creamery for a special shoe edition.

Optimistic Runners introduced a collection inspired by Berlin's character, blending performance and fashion. Balmoral focused on warmth and texture for its fall collection, reflecting its Canadian roots. NikeLab launched a comprehensive apparel system for runners. Read more gear coverage.

Hermanos Koumori collaborated with Adidas on a mentorship-inspired collection. Alex Zono brought his colorful style to Brooks with two Ghost Trail versions. Portal released a FW26 collection shot at UTMB 100M and Badlands. Related: Adidas and Hermanos Koumori Release FW26 Collection.

This original Runner World brief is based on reporting from Believe in the Run. Visit the source for its complete reporting, context and any later corrections.