Prettyboy reservoir loop is an iconic 25Km/15.5 mile loop around Baltimore’s northern reservoir that includes 7 distinct VO2 length hills. It has also been the time trial course for ‘That Dam TT’ for 8 years, including the Mid Atlantic championships for the past 2 years.
This is a classic loop for doing hill intervals and even includes a testing 4Km/2.5 mile hill warm-up to get to the start of the loop. There are several very prestigious Strava segments (including the entire lap) in this loop.