Tim, that's great! It bodes very well for your recovery and returning to PRs.
I don't know if you knew of Hope from Kemibe's site but she ran incredibly well while battling cancer. She was an amazing inspiration with how hard she trained and well she ran while undergoing chemo. Until I heard of her, I never even thought of people running through chemo but she made many of us realize what could be accomplished, even while going through some intensive chemo treatments. If you knew of her, I'm sure you'll be drawing inspiration from her as you go through the next stage of your treatment.