To figure your target training times, input the distance and time of your running time trial or race. The results will calculate your “effective VO2max” (i.e., VDOT) based on Jack Daniels’ running formula, and provide you with target training times for Daniels’ five training zones at different distances.
Effective VO2max and Running Pace Zones
Updated on February 5, 2025
Tagged: RunningTraining zones
About The Author

Adam Hodges
Adam Hodges is a mountain endurance athlete and coach. He holds coaching certifications in running, ultrarunning, and triathlon with a specialization in sports psychology from the United Endurance Sports Coaching Academy (UESCA), as well as credentials from USA Triathlon (USAT) and the American College of Sports Medicine (ACSM). He currently works with runners, ultrarunners, and multisport athletes, and has also coached high school cross country/track and masters swimming. As a USAT All-American triathlete during the 1990s, he competed in the ITU World Triathlon Championships, the ITU World Duathlon Championships, and the Ironman World Championships in Hawaii. As a masters runner, he won a series title in the XTERRA SoCal Trail Run Series. His current pursuits include mountain running, ultrarunning, skimo, and cross-country skiing. Check out his training plans and training guides to help you prepare for your next adventure.