Canceled for 2021. The annual Monte Rio Triathlon offers Olympic & Sprint distance races, Olympic distance relays and an Olympic distance AquaBike. The swim is staged in the Russian River. The bike course follows the Russian River and travels through old growth redwood trees. Those competing in the Olympic distance race will also ride out to the picturesque coastal town of Jenner and back. The run course is flat, fast, and shaded almost the entire way.