The half 21km (13.1m) test will consist of a warmup followed by a straight 21km effort (no stops)
During the test, we care only about pace per mile. Don’t worry about HR.
Ideally in a 2 loop route but is your choice.
For this test, we are following an educated effort. So once you start the 21k please keep an eye on your watch using the CURRENT LAP screen.
It is important that you check the pace of that current lap every 20 secs to 30 secs. So you have time to correct the pace.
For instance, if you are supposed to keep that particular mile around 7:10 and your current lap is marking 6:50 you need to slow down. We go as close as we can for the prescribed pace. Except for the last 3 miles if you feel strong you can push faster.
There should not be water breaks unless you are carrying the water with you.