As Stevie said the support can get a little overwhelming. Around mile 8/9 up near the park the spectators tend to come onto the road a bit. Gets a little narrow along there
probably should have couched the slowish start comment to include anyone in Red zone backwards. Even for the 1.30 to 1.40 guys the start can be a little crowded but not too bad. The yellows and front of red are probably fine
bb - start can be slow/crowded for first mile or so. Hill as mentioned by a few just after 2 miles but not that long....then downhill into town. The last couple of miles can be tough along the dual carriageway but you head downhill onto it and you can just keep going.