Completed week 3 today in pale autumn sunlight. A cool 13C, perfect for running. Still managed to sweat buckets. Runkeeper told me it was my fastest 6-9 km run - probably fueled by a need to get out and clear my head. I did enjoy myself.
Week 4 will be a greater challenge and will probably take me three weeks. I can't find that much time in the mornings before work, so will only be able to do these runs at the weekend. But there's no rush!