7:28am PDT - October 23rd, 2021

The best way to determine optimum mileage is to keep a training log. The Internet now offers many magic run-tracking devices (including my app) or simply mark mileage on a wall calendar. If things go wrong, or right, you can analyze your training and find out why. #RunWithHal https://t.co/XYY3gJFfCU

10 retweets   0 likes  - Hal Higdon (@higdonmarathon)