On me bike

First cycle training today, hamstrings and groin are hurting. I was out about 30min and did 8.5km, just need to double my speed and I'm there. My heart rate was 130bpm, I tapped this into Livestrong Loops and it gave me an average speed of 18kmph. Its not lightening quick but lots more work to be done. I quite enjoyed going out late nobody was about trying to run me over. I think the next bit of kit will be some toe clips and start shopping around for a cycle computer.