Intermediate level. Athlete should be running at least 3 days/week and be able to run at least 40 minutes comfortably before starting this plan. First long run is 45 minutes. Feel free to contact me: kristen@runallthemiles.com if you have any questions regarding this plan. If you'd like to add a Coaching Consult, or if you'd prefer a Custom training plan made for you, email me or visit my website: runallthemiles.com