Carreras Running Colorado2025 • Marathons & Trails •

This month, 0 running events are scheduled in Colorado. Open registrations, marked courses and official timing guaranteed.

To start in Colorado, we recommend short races. Suitable elevation, frequent refreshments and friendly atmosphere guaranteed.

Each department develops expertise based on its terrain and history.

The 2025 calendar of running events in Colorado spans the entire year with 0 confirmed events. Detailed planning and early registration recommended.

Registration for running events in Colorado is done online via local organizers. Licensed, student and group discounts available.

Colorado offers a wide variety of running events: maratón regional, medio maratón natural, 10km urbano, trail departamental, carrera montaña. The varied terrain allows urban marathons in major cities, mountain trails in the massifs, nature half-marathons along rivers and heritage races in historic villages. Each department develops its specialties according to its terrain and heritage.

Colorado offers excellent running conditions year-round. Spring (March-May) and autumn (September-November) are ideal for marathons and half-marathons with moderate temperatures. Summer is perfect for high-altitude trails and morning races. Winter allows urban races and winter challenges. Our 0 listed events cover all seasons to match your preferences and training goals.

Running events in Colorado exploit the region's exceptional geographical diversity. Varied terrain, contrasting climates and unique heritage create unique running experiences: from fast urban racing to technical ultra-trails, including panoramic half-marathons and heritage 10Ks.