I have a line chart of the elevation along a marathon route. Column H is the
distance from start (x-axis), and column F is the altitude (y-axis).

I want to identify towns along the route. So at, say, km 20.2, I want the
name of the town to display next to the line. There are about 10 town names,
which I've entered in column I at their appropriate distance.

How do I get these town names to display on the chart? Can I tell Excel
these are the data labels I want? Or do I just create text boxes and
annotate the chart that way? Or something else?

Using XL2007 on Vista.

Thanks,
Fred