100 would be good but honestly I wouldn't be surprised to have double that number..at least. When you bear in mind a large hallamshire harriers contingent(parkrun using our clubhouse facilities), a fair few hallam parkrun runners defecting over, there is apparently 20ish coming from Huddersfield parkrun, some from Barnsley, some from concord, other nationwide parkrun tourists, a group of inaugural only parkrunners, newbies, 25 approx from a female only group called strikeout, kris from vision gym in stocky bringing 5-10, another PT sending a few of her clients, any from graves that come across and then finally UoS advertising all over campus so expect quite a large number from there.
Expect The first one will be packed, second & third quieter then I think it will get busier and busier. That is when I start to big up concord. Hillsborough will not struggle for numbers.