OMG I actually ran for a full 20 minutes! I can't believe I made it. Still going slow and steady and feel like I should be running faster, but I'll tackle speed once I've completed the course I think.
Still have the problem of legs aching though. Breathing isn't really an issue now. Any tips on how to stop aching legs when running? I have good trainers and they're super comfy. I'm thinking its probably due to my weight as I'm very overweight.