We try to keep this calendar as accurate as possible, but please verify dates and times with the event website or listed contacts.

Race Directors:  If you would like your race listed on our calendar, please send notification to

Color Significance:
Red - NITRO group run
Blue - NITRO Circuit race
Tan - NITRO special event
Purple - NITRO Walk to Run program
Yellow - local races (not affiliated with NITRO)
Green - US holidays
Orange - weather