Could you elaborate on why you're asking if Dallas is a good cycling city? Are you considering moving there and want to know about its cycling infrastructure? Are you curious about the city's bike lanes, bike-sharing programs, or cycling communities? It would be helpful to know your specific interests or concerns so I can provide a more targeted answer. In general, Dallas has been making efforts to improve its cycling infrastructure in recent years, but it may still lag behind some other cities in terms of bike-friendliness.