The McKenzie River Trail Run is the final event in the Oregon Trail Ultra Series. Tracing a route along the beautiful McKenzie River Trail, this 50K offers runners a technically challenging course and the inspiration of some of Oregon's most breathtaking scenery.br br br Whether you're a thoroughbred doing your best impression of humans or a first-timer looking for the next step, you'll feel right at home on the McKenzie. Looking for world-class competition? You'll have people to run with. Wondering if you can finish? You won't be alone. Think runners are crazy? Bring a camera and a lawn chair; the company is great.