Yasso 800

Last night at Oda Field the group ran the Yasso 800 workout

The idea of the Yasso 800 is that the average time of ten 800-meter intervals in minutes and seconds will predict one's marathon time (in hours and minutes). 

So last night I ran an average 800-meter time of 2:38, implying I am capable of a 2 hour and 38 minute marathon. 

The key point here is that this projection only suggests a theoretical capability.  Since I could barely run 14-kilometers on the weekend, it is highly questionable whether I could run a marathon at all right now, let alone complete one in a time of 2:38

Nonetheless it was an encouraging workout, and certainly among the most grueling I have done in months.   I ran with Omar and Taro, and when Omar took us through the first 800 in 2:35, I knew it was going to be a struggle.   An added challenge comes from needing to complete a 400-meter jog between the intervals in the same time interval that we run the 800s, so 2:38 in my case.   My the end of the 12-kilometer I was drenched in sweat and struggled to  find energy to shower and make it to the post-run dinner.