My jogging partner and I are wanting to train for a 10K. We run 3-4 miles a day for 5 days a week. We have done 4-5 local 5K races.
Is it that much harder to step it up to that next level?? Should we increase our daily runs by distance or time? I have been having some knee pain (slight) and think my shoes are just getting old. I bought Asics 2130 in January and I've noticed less cushioning as of late.