I've got the 2.5K run for JuJu's plan coming up tonight (I think I'm a bit behind everyone else as my running week starts on a Monday).
Anyway, the plan is to run intervals for the shorter runs through the plan. After looking around online, I'm thinking of doing it in lots of 400m (300 jogging, 100m fast). Hopefully it should go okay, I'm quite looking forward to giving it a go having never done them before!