Absolutely amazing. So over the weekend, I was running 2.5 - 2.6 miles a day outside. Yesterday I had a rest day.
Today, I hit the treadmill at the gym. Anyway, I hit 2.5 miles and just felt like I could keep going. 2.8 miles I thought. Nope, felt like I could keep going when I made that. So I hit 3.1 miles (5k) and couldn't quite believe what was going on. I was looking around and smiling and people! People were getting on the treadmills next to me while I was running and leaving before I was done! At 3.5 miles I decided to stop. The longest run I have ever done!
Now, I am sure that some of this is because treadmill running is probably easier than running outside due to inclines etc. but it still feels absolutely great!
Now I just need to edge my outside distances up.