Since there were two races taking two separate routes, there was about 15 minutes between the start of the half marathon and the 5K. This was to allow all the half marathoners to get past the point where the half marathon goes right and the 5K goes left. Not only does this help reduce some crowding at the start, it also avoids mass confusion and collisions galore as the races split.
The first 2 years of Peach Jam, we have had massive amounts of rain the days leading up to the race which has lead to some minor flooded areas along the way. All week there had been threats of rain in the days leading up the race (and even race morning). Thankfully forecasts were wrong and rain throughout the week was minor and there was no flooded spots to have to deal with. Seriously, I smiled when I made a right hand turn and saw that there was little water laying in one of the low-lying areas that was under water in the past.