Glad that you recovered from the calf problem, Antonio. I've had a couple of those in my time, and I know how hard they can be to shake off.
Does the gym you go to have any cardiovascular machines? Things like a treadmill, static bike, elliptical trainer, step machine, rowing machine...? If it does, I would seriously suggest you try to use them. Apart from the treadmill, they are non-impact exercises, so you can increase your fitness while not putting much pressure on your joints. Swimming is also worth considering. Also, do you have softer surfaces to run on? What about the beach?
I mention these things because you've remarked on pains in your knee and calf a few times, so I'm wondering if you're putting too much pressure on your joints? It might be worth trying to toughen up your joints
and crank up your fitness in these other ways, while keeping your road running to a minimum for the moment.
How is the weight at the moment? Are you still trying to shed a few kilos? Or are those churros still winking at you?
I tend to think that 10 miles (16km) is a good minimum to be able to run comfortably in the preparation for a half marathon. You still have time to make that distance but you're right -- the medio maraton is not too far away. Even if you're under-trained, I'm sure you'll still be able to get round as long as you take it easy. Hey -- I may be able to beat you at last!
Thanks for your comments on the other thread. Yes, I'm fairly pleased with the progress I'm making. If (big IF) I stay injury-free, I'll be hoping to run much better in Almeria than I have the last 2 years, both of which were very poor for me. I was extremely unfit the first time, and was recovering from an injury in 2008, and just trotted round the 10K in a semi-walk. I may be in a position to aim for a PB in 09, but we'll have to wait and see how things go. If I can beat both you and SP this time, the
zumo de naranja will be on me
.