Ok, so starting this log to try and keep myself honest on my training. Not sure if it will work but worth a try. I might also find out what I'm doing wrong.

Right, in relation to background I'm on the wrong side of 45 and have been running for the last 14 months or so. I'd classify myself as a non-competitive-but-secretly-competive runner.
The intention this year is to start training properly as my previous training was very scattered and usually not enough for any distance event meaning I'd be pretty fatigued coming towards the end of a race. Average weekly distance would have been 15 - 20K. I do also cycle so average cycling distance per week would be just over 100K. Cycling seems to help running fitness but not vice versa so cycling would usually be favoured by me.
Current PB's:
5k | 22.30 | Aug '18
10k | 47:57 | Sep '18
10 mile | 1:18:47 | Sep '18
HM | 2:07:45 | Jun '18
Goals for 2019:
5k | Sub 20:00
10k | Sub 43:00
10 mile | Sub 1:12:00
HM | Sub 1:45:00
Marathon | Sub 3:30:00
I got runner's knee on both knees back in October so dialled the running right back to just weekend parkruns. The knees seem to be fine now so I'm starting up training for a hilly 10 miler in April. I'm currently following the intermediate plan
here.