A triathlon — swim, bike, run — but make it gravel. Without Limits keeps this one capped at 250 participants, so it stays manageable and the vibe stays dialed. Leave the tri bike in the garage; this is flat-bar and knobbly-tire territory.
Stagecoach Reservoir anchors the whole thing, and the bike leg rolls out from there onto gravel country roads through the surrounding high country. The course is 100% unpaved, with enough rolling terrain to keep your legs honest between the swim and the run.