So, what can we do to improve calf strength to run?

I love to train athletes in a few different capacities…

Because Achilles injuries are so common and can be very devastating, I always like people to involve some isometric (long holds) exercises as part of their strength program. This means, literally rising onto your toes and simply holding for anywhere between 15 seconds and 45 seconds. This exercise should be the major component of the strength program until the Achilles pain is managed properly.

If there is no Achilles problem, then I like people to add concentric exercises to their program; this means up and down. It is important to strengthen the gastroc muscles, as well as the soleus, which are the two major muscles in your calf region.

With the gastroc muscle, it is easiest in standing with your knees straight and with the soleus it is easiest in sitting with your knees bent.

In regards to speed, reps and sets, I recommend playing around with this, as it allows the muscle to strengthen in different phases to better prepare your muscles for different forces which can help build resilient muscle tissue.