I am in my fifth week of a sixteen week marathon plan. Today the plan called for a 5K race. I did not find a race in my area so I run 3 miles, technically 5k, by myself. I am wondering how this run would impact on my training or what results I can draw from this run. Is there any meaning to the results at this short phase to the training plan? I have followed this plan for years but always ignored the 5k race because I thought it was not important. I run the 3 miles a minute faster than my estimated marathon pace and it was somewhat hard perceived effort!