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Start your year strong with the 100K or 50K ultramarathon at Shaffer Bend Park, featuring dynamic loops along scenic limestone bluffs and the crystal-clear Colorado River. The course delivers sun-bleached trails and lush natural views, with a manageable elevation profile per loop, making it welcoming to runners of all experience levels. With generous cutoff times, this race is accessible yet challenging, letting you embrace adventure amid ever-changing terrain and stunning vistas. Whether you’re chasing a personal best or just taking in the park’s riverfront beauty, these ultras promise a spirited start to the year.