What has changed (race times, blood work, attitude, etc)?
Last winter I started feeling confident that I could do longer races again and more then one. This year so far I have done a 10K, 1/2 marathon and most recently TC 10 miler. I ran a different 10 miler in 2016 (only race that year) and my TC time this year was 9 minutes faster. I have never been able to keep my average pace under 10 minute miles and I finally did it! I have decided that TC marathon 2018 will be my next goal. It marks 10 years since I last did it.