I’m training towards a 10k next month. I’ve done 10k in 1 hour 40 min a week back first ever. I want to improve that time and haven’t got the 1 hour 40 min free much to keep practicing that distance so thinking to practice speed running this month. Example I can run at 1k in 8 min pace for short time so I could work on increasing the time I can run at that speed. Would this help me get a better time on 10k or is it likely I would struggle towards end?