Joined: Jan 2009
Posts: 44,163
Likes: 6,382
From: New York, NY, and High Falls, NY, USA
Bikes: 1962 Rudge Sports, 1971 Raleigh Super Course, 1971 Raleigh Pro Track, 1974 Raleigh International, 1975 Viscount Fixie, 1982 McLean, 1996 Lemond (Ti), 2002 Burley Zydeco tandem
Yes, it's common for cyclists to have tight hamstrings. That's because we can get away with riding without stretching. That doesn't mean we shouldn't stretch.
The good news is that you can remedy this. This thread already has some good advice for you.