Given the fun we had trying to calculate how our 10k paces translated to a per 400m timing (in terms of seconds), see below for a quick guide!
[attachment=0:3pnpzrju]400m Pace.png[/attachment:3pnpzrju]
Note that your 10k race time of 50 minutes does not translate to a 25 minute race time for 5k, instead you’d be targeting a race time of 24 min 05 seconds (see http://www.mcmillanrunning.com/” onclick=”window.open(this.href);return false;). So your 10k pace would be 120 seconds per 400m, and then your 5k pace would be 116 seconds per 400m.