Ehhh...I wear a super-plus tampon the first 2 days and bring a spare along with me. Other than that, it's just another ride to me...I don't do anything special or different such as shortening the mileage or anything like that. Riding actually helps with the discomfort, in my case. I remember doing a century ride on my 2nd day (heaviest for me) last summer...and it hadn't actually dawned on me that I was on my period until we were done.

Linda