How many of you have long-term records of your times on a particular route over the years? I have a 12.8-mile loop I do about 3 times a week. It's a mix of streets, park roads and MUPs with a short 8% hill and a longer (0.6 mile) 5% hill. I don't go full speed every time because of traffic and I slow down for folks using the MUP, but on a quiet early morning I sometimes give it a blast to see what I can do. Best times over the years have been:

2005: June 1, 46.50
2006: July 1, 45.48
2007: July 9, 46.06
2008: July 8, 46.26
2010: Aug 20, 47.16
2011: Aug 26, 48.08

Last year was slower because part of a trail was under re-construction. I'm up to 48.45 so far this year but haven't really pushed it yet - I hope to beat last year's time at least. At 62 I'm pleased to have kept my health but I don't expect to match my 2006 performance again!