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SHIMANO 100
The Shimano 100 stands as one of Australia's most respected marathon events in mountain biking, drawing riders from across the country since 2010. Set against the backdrop of Stromlo Forest Park's challenging terrain, this event offers something rare: the chance to tackle over 75% of the park's trail network in a single race format that scales to every rider's ambition.
Whether you're chasing a personal milestone with one lap of the Challenge, building race experience across two laps of the Adventure, pushing through three laps of the Epic, or embracing the ultimate test with five pre-dawn laps of the 100 Miler, this marathon delivers a genuine measure of skill and endurance. The course's reputation speaks for itself – 27km of predominantly technical singletrack broken by strategic fire road sections, with 800m of climbing per lap, including the notorious "Casuarina Climb" that defines Stromlo's character.
The 100 Miler riders experience something special: a 5:30 am start that transforms the first lap into a sunrise journey through familiar trails, while the day distances offer their own rewards across perfectly spaced categories. This is mountain biking as it should be – challenging, rewarding, and shared with a community that returns year after year to test themselves against this iconic circuit.