I belong to a Razor Sharp Fitness Center (Membership is $29.00 a month) and I took their free physical assessment and hired a personal trainer for a month to help me with golf related exercises and flexibility. I have seen the trainer three times and have been in the gym every day Mon-Fri for the past 6 weeks. I went riding the other day and my pace was faster, and my overall ride was much more enjoyable than it was last year. IMHO there is a huge benefit to adding weight training to your cycling.