Mix it up or stick to riding more?

As it's a new year it's that time of year that we all go again with our riding and training. However, I'm caught between mixing my training and wanting to improve on my road and mountain bike.
Current activity:
Monday - 5 a side footy
Tuesday - Circuit training
Friday - Gym
Sat/Sunday - 40 miles on road or 20ish off road
I want to improve my riding speed and and endurance but I also want to mix it up. I suppose my question is will I gain anything from a more rounded approach or is it better to just get miles under my belt?
Current activity:
Monday - 5 a side footy
Tuesday - Circuit training
Friday - Gym
Sat/Sunday - 40 miles on road or 20ish off road
I want to improve my riding speed and and endurance but I also want to mix it up. I suppose my question is will I gain anything from a more rounded approach or is it better to just get miles under my belt?
0
Posts
I have tried walking/running/swimming but although they are beneficial in their own way, they don't help (me) with riding.
If you really want to improve your fitness/skill/speed/endurance in cycling, like the other said ride your bike more.........lots more :-) If you really love doing it, it will never really feel like training anyway.