My PB at Guildford Parkrun is 23:12, and my best ranking is 77.
My current time at Guildford Parkrun is 25 mins (5:00 min/km), and ranking is near 120.
To rank in the top 50, I would need to achieve a time of 22 mins or lower. This would require running at an average pace of 4:24 min/km.
Losing 3 mins will not be easy. It’s a good target – challenging but not impossible.