How long does cocaine stay in urine. Cocaine typically remains in your system for about 2-4 days. This is the detection window for urine for the majority of casual users. Chronic or heavy cocaine users might have a much longer detection window.…How long does cocaine stay in urine. Cocaine typically remains in your system for about 2-4 days. This is the detection window for urine for the majority of casual users. Chronic or heavy cocaine users might have a much longer detection window.WWWW…