This morning before work I completed my 4K run. I I ran it in 27'12'', without music. Just ran at my normal, static pace. The distance is actually more like 4.2km, and I felt I could have continued running for the remainder of the 5K at that pace. So now I feel confident that I could finish a 5K, I just have to get my pace set so I can meet my 30'00'' goal. Tomorrow it's a 3K at 155 BPM.