The OC Triathlon is a terrific Olympic course! This was my 3rd time doing this race and I’ll be doing it again next year. It’s a great tri-season jump starter. The water temperature is always warmer than I expect, so be careful of overheating in a wet suit. The bike course is fairly moderate with some hills so be sure to save something in the legs for the run course because it is punishing. The run starts off nice and easy with gradual downhill, but then there are 2 major inclines (a dirt trail between El Toro and Los Alisos and the road up Vista Del Lago from Los Alisos) at miles 4 and 5. T1 and T2 are about a mile apart so they are easily walkable for most spectators. My parents find it far more entertaining than watching a marathon.