a date that lasts longer than normal, maybe 2 or 3 days... Usually involving a lot of long lasting tantra sex.
Yo John, what time did you drop off Jane after your date?
"Nah, man. I didn't drop her off. She stayed for 3 days we were marathon dating!"
"Nah, man. I didn't drop her off. She stayed for 3 days we were marathon dating!"
by southbronxems August 6, 2007
Get the marathon datingmug.