Special 200th episode Q&A: speed & distance goals/injury markers/achilles risk factors/hip drop insights

How do you plan a speed goal (5K PB) and a marathon goal at the same time? Is it possible and wise to concurrently train for both of these at once? If it is okay to train for both how should I implement a strategy?

When recovering from an injury and returning to running, what is the best marker? Should I track my progress via distance covered or time on feet?

Is there a correlation between calf/Achilles tendinopathy and weakness in the surrounding structures? If so how should this influence rehabilitation?

My therapist has diagnosed me with hip drop. Subsequently, they have prescribed single-leg squats and encouraged me to drive my leg through when running which I find uncomfortable. What is hip drop and will strengthening the muscles help correct this?