The session was 60 minutes duration, including 5 minutes warm-up, 50 minutes "fairly solid pace" & 5 minutes warm-down. I didn't find it an 'easy' run, but then 'fairly solid' is not synonymous with 'easy', I guess.
Total distance for 60 minutes was 8.5km (not far, is it?); fairly warm at 11:00 a.m. when I started & got even warmer as the pace became more solid! Polar monitor gives me average HR of 80-85% & 7:03min/km....oh dear, my 1st marathon, 5 years ago, was run slightly faster than that pace!
I'll call it a "pilot study" for Blackmore's half marathon, which I hope won't be any longer than SMH half (2:27).