Well.......takes off bike helmet and puts on running cap......

concrete is 10% harder than asphalt and when I am running high miles...say a 20 mile long run...that increase in hardness really adds up. I've had two bone stress fractures just from running and so it's important to me.

Also, I don't like running on sidewalks because they are usually broken up and uneven and cause me to trip.

But, I don't feel that these issues would be that important to me if I was only walking. Maybe if this person was doing a run/walk program. And now that have am both a runner and cyclist I would definately step aside to allow the pace line to pass. As you said, that is a bike lane....but I think legally the pedestrian rules.

I'm sure that many people have seen me running and wondered why I wasn't on the sidewalk, so this is why.