Below is a summary of the more common triathlon types and their associated approximate distances. Most people do a Sprint first as preparation for a future Olympic. I am doing one step up from a Sprint– a hybrid between the Sprint and Olympic. It consists of 1000 meters swim (33% less than), 35km bike (12.5% less than), and 8k run (20% less than).
Super Sprint — 400 m (0.25 mi), 10 km (6.2 mi), 2.5 km (1.5 mi)
Sprint — 750 m (0.5 mi), 20 km (12.4 mi), 5 km (3.1 mi)
notes: Sprint Distance is the fastest growing triathlon race distance in the United States
Olympic — 1.5 km (0.93 mi), 40 km (24.8 mi), 10 km (6.2 mi)
notes: also known as “international distance”, “standard course”, or “short course”.
ITU-Long Distance — 3.0 km(1.86 mi), 80 km (49.6 mi), 20 km (12.4 mi)
Full — 3.8 km (2.4 mi), 180 km (112 mi), 42.195 km, (26.2 mi or marathon)
notes: Also known as “long distance” or “Ironman”.
I’m not worried about the cycling — I’ve done 120 miles across 2 days so I know I can train and push through 22 miles in just under 90 minutes. I’ve run 8 miles in one day and have participated in 10k’s and 5k’s. In fact, I have a 5k race scheduled a couple weeks before the triathlon as a milestone check. As it is the last part of the triathlon, I’m expecting about just under a hour of running. I’m most worried about the swim. I don’t really know what to expect. My training schedule has me spending as much time in the pool as on the road. Also, I have a membership at LA Fitness, which is 2.5 miles from my house. Sounds like good triathlon brick training!