Last Saturday I participated in my first ever Time Trial!!! It was such a cool experience....Philadelphia closes off West River Drive in the summer and for years, cyclists have been holding informal, volunteer-run time trials. The course is 8.35 miles. I was able to finish in 23.54 min. with and avg. speed of 21.28. This was such a rush and so fun...I would recommend the River Drive TT to anyone in the area who is even just a little curious about TT's!