It depends the distance of your "mini" marathon. A standard marathon is 26.2 miles and requires at least 4-6 months of consistent running to train for. I think it might be possible to run a 10K (6.2 miles) by 9/26 but anything longer than that would be a stretch if you're new to the sport.
NOTICE: The information provided on this site is not a substitute for professional medical advice,
diagnosis, or treatment. Never delay or disregard seeking professional medical advice from your
physician or other qualified health provider because of something you have read on Wellsphere.
If you have a medical emergency, call your doctor or 911 immediately.