If you're actually running in place, you're using very different muscles from either street running or treadmill running. Running in place is better than nothing, but it's not particularly good training for a race. I think you'd be a lot better off dropping the running in place and instead following the C25K program outdoors with the jogging stroller.
"...I've learned that you shouldn't compare yourself to the best others can do, but to the best you can do....I've learned that you can keep going long after you think you can't..." --- author unknown
2013 highlights...
@ 5K: Ontario Mills 5K, Ontario, CA, 24:42
Glendale Downtown Dash, Glendale, CA, 25:02
Heart of the City Run, Los Angeles, CA, 24:13
@ 10K: LA Chinatown Firecracker 10K, Los Angeles, CA, 51:42
The Great Race - Old Agoura 10K, Agoura Hills, CA, 51:12