Running with Richelle - I see a lot of posts on social media encouraging runners to strengthen their soleus muscle by doing seated calf raises with a dumbbell or kettlebell on the
Single Leg Kettlebell Calf Raise
Exercise Index: Standing Calf-Raise with Kettlebell
Kettle Bell Single Leg Calf Raise Exercise Guide - TrainEatGain.com
MuscleWiki - Kettlebell Single Leg Calf Raise - Calves