Andreas Almgren, European 10,000m champion, prepares for his marathon debut in New York. Almgren, who holds European records in 5000m and road 10km, aims to transition to marathons. His training includes high mileage and specific workouts to build base fitness.

Almgren's training philosophy evolved from his friend's success. He adapted his program with more prehab workouts and increased mileage. His coach acts as a support person, challenging his plans. Almgren's marathon debut in New York is part of his long-term plan. Read more racing coverage.

Almgren's training block includes building high mileage and doing long, hard runs. He focuses on aerobic threshold during base training. Almgren aims to perform at his best by doing tough workouts, preparing for the marathon's demands. Related: Daley Thompson Reflects on Career, Training, and Legacy in Athletics.

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