I recently became a RRCA Certified Running Coach.

From their website:

The RRCA Coaching Certification course is designed to provide a baseline of education and training for individuals seeking to become an RRCA Certified Coach.  The RRCA Coaching Certification Course emphasizes how to be a successful coach, whether coaching individuals, small groups, or large group training programs such as 5K, half marathon, or marathon training programs.  The certification course focuses on issues specific to road running and racing for adults at all ability levels.

The course curriculum includes 16 hours of lecture, group work, and interactive exercises, including working in teams to build training programs for novice and experienced runners. The two-day certification course is an in-person course followed by a 100-question online exam that will provide immediate results.

RRCA Certified coaches volunteer with their local RRCA member running clubs, coach clients one-on-one, and coach training programs for groups of individuals working towards a common goal.  RRCA Certified Coaches will work with runners and emphasize the use of intelligent training plans that are based on a scientific body of knowledge and designed to help a runner achieve their goals, while minimizing the risks of overuse and over-training injuries.

Form more information here is there website: RRCA Coaching Certification