The answer to that is YES! Today I did my local park run (its only it's 4th event) and boy was it hard. Reassuringly nearly everyone I spoke to found it a lot harder than last time and times were a few mins slower. Today I did the run in 38 mins which is 2 mins slower than last time and 4 mins slower than my best ever 5k. I do feel like I am going backwards but know that as this course is harder I have to work on my PB for that course not just 5k. On a positive note I will have my highest ever finishing position (does it matter that I was 3rd from last????) and think I have found the right park run family for me!!!! (I am be lucky as there are a number of park runs reasonably close to me)
Enjoy the fab sunny day folks!!!!