Others last for months or even years. There is no clear way of predicting at the present time how long this activity might go on for."
VOA: standard.2010.04.16
I was going to say when you first start doing this, even people who have been doing it for a long time still go off on ten-minute daydreams before realizing that their minds were wondering.
Determined to run at least a little of the course, I started as I knew I wouldn't be able to goonforlong, jogging until the crowd thinned out and I could take up the brisk walking pace I hoped would get me back to the stadium before the street cleaners moved in to sweep the course.