Started near the Bijou bridge on the Pikes Peak Greenway and did a warm up mile, then a mile at a 7 pace, followed by 3/4 mile at easy pace. Pushed then for another 3/4 mile at 6:50 pace.
So far so good. 3 1/2 miles, was handling it okay, turned around - now heading South & slightly downhill. Next 1/2 mile at recovery pace. Time to turn it up - next 1/2 mile at 6:35 pace. Took the next 1/4 mile at a dawdle - trying to catch my breath and count my kidneys.
Time for a full effort: the next 1/4 mile did at a 6:25 pace. Almost busted a foo-foo valve on that one - but survived and the next 1/2 mile was at a pace or feeling to be described as "trying to stop the feeling that my teeth were bleeding".
With a mile and a half to go I then decided to push again for the next mile - did that in 7 minutes. Finally the last 1/2 mile to recover - "pushing myself in a wheelbarrow" pace.
So, mission accomplished, I think.
I ran faster.