There's a ridiculous amount of good riding here. But there are also a LOT of white bikes - this is a dangerous, dangerous state in which to ride among regular traffic. (This is statistically driven, not anecdotal)
Are you all about climbing? Prefer a 50 miler with only 300 feet of gain? It's all here.
Tips for those new to town:
1. Do not, under any circumstance, think you know better when people warn you about the traffic dangers. I grew up riding NYC and Boston - this place can be far, far scarier. But people are super nice, and it's a bike friendly city.
2. There are excellent MUP's. Avoid them on weekends and incorporate them into your routes.
3. There are also a LOT of great rides on roads/streets that have respected bike lanes. While I'd watch my ass on a county highway, for example the climb to the Sandia Crest from route 14 is epic and safe.
There's a large and inclusive bike community here.
And yeah, it can be very cold here at Christmas. Like, in the 20's. That'd be fahrenheit.