Various studies have shown that training less often results in an increased risk of musculoskeletal injuries. Most tissues respond better to small, repeated stimuli. Biomechanical learning processes and adaptation processes are facilitated through more frequent stimuli. In other words, shorter, more frequent runs are preferable to longer, more sporadic sessions.
For inspiration, here is an excerpt from one great classic running movies, Forrest Gump. To borrow Forrest's beloved analogy, life is like a box of chocolates, we run to taste a new one every day!