It's interesting to watch the speed skating events and translate them to T&F. The 10k speed skating is in the same time ballpark as the running 5k. Meaning that the relative effort is roughly the same- it's about how much energy can you put out over 12:30. The big difference between running and skating is pack running vs, it being a time trial. So T&F can kind of spread out the effort based on the pace of everyone around them.
But to translate that to the amateur- I don't think it's that important. If I skated a 10k, I bet I would take similar time as a 5k run. And I remember how hard it was training for 5k relative to 10k relative to half marathon (I broke in marathon training, so....)
And I get a good idea how the athletes are feeling when they are trying to gut out that finish, especially that they know how to push themselves harder than me (so not only are they in better shape and faster, they can push farther). Still, knowing how hard a 5k in my lungs.... That's a 10k speed skate is tough.