I suppose with anything new, it takes a while to work it out, sometimes. The heart rate monitor driven training I have been doing was based on a page called Heart Rate Zones. What I didn’t notice was a link at the bottom of that page to Training Zones!

Both are correct for what they are saying, and since it is training that I am doing I should have been looking at the second page, which basically means that I should have been doing my long runs at a heart rate of 77%, not 70%. These numbers should mean that I should be around the 10:00 pace at the correct heart rate.