Mrs. Fred has been running more than cycling lately as a consequence of a friend bringing her shoes on our christmas/new year cycling tour and Mrs. Fred seeing how easy it was to get a quality workout in minimal time and with minimal equipment.

She's slowly worked her way up in duration and distance to the point of now doing 10k training runs. While she's happy with that, it has impacted on her cycling fitness. We met up with some friends, who she would have expected to be stronger than, at an MTB park a few weeks ago. She was left panting and gasping and realizing that she hasn't been cycling as much as she has been running.

With regard to fitness: it's all good. But, beyond basic cardio, there's minimal cross benefit between the two. And, certainly if one is cutting into the time committed to the other you will see a detraining tendancy. Now, if you can maintain your cycling volume and actually add running volume, I suspect you would come out marginally ahead. Not as far as if you added the time solely to cycling. But, any increase in fitness is better than none at all. And, weight loss would trump the other factors anyhow.

Keep it up Axiom.