80/20 Endurance: 2025 Edition 15-Week Core Strength Plan
80/20 Endurance: 2025 Edition 15-Week Core Strength Plan
Structured Workouts automatically sync with compatible devices and guide you through workouts in real time.
Learn More about Structured Workouts.
Length
15 Weeks
Structured Workouts automatically sync with compatible devices and guide you through workouts in real time.
Learn More about Structured Workouts.
Plan Description
Core strength is important for all endurance athletes. Strengthening the muscles in your body’s midsection will help you swim with greater tautness and less drag, cycle with less low-back discomfort, and run with better posture and less energy waste, among other benefits. There’s a reason elite endurance athletes make time for core strength training, and you don’t have to be a Professional athlete to get the same benefits.
TARGET ATHLETE
Our Core Strength Plans are for Runners, Triathletes, Cyclists and other endurance athletes seeking a focused core-strengthening routine. These plans are suitable for athletes at any fitness level, as these plans require minimal equipment and can be adapted to individual needs.
Ideal for athletes preparing for competitive events or looking to include more intensity in their training.
VIDEO DEMONSTRATIONS
All Strength Sessions in this Core Strength Plan include instructions and videos demonstrating how to complete the prescribed exercises correctly.

PLAN BENEFITS

25% OFF or 30 DAYS FREE TRAININGPEAKS™ PREMIUM
This plan includes 25% off or 30 free days of TrainingPeaks™ Premium. This offer is limited to one time per athlete and is not applicable to coach paid accounts.
LIFETIME PLAN
Every 80/20 Endurance plan purchased becomes a permanent part of your TrainingPeaks plan library. You can start, stop, and reuse the plan as often as you like, beginning or ending at any point in the plan.
LEVEL GUARANTEE
Not sure which level is right for you? Review our Level Comparison Charts to find the best fit. There’s zero risk: Our Level Guarantee allows you to switch to a different level or intensity type within the same distance if you discover that the plan you’ve selected is too hard or too easy.
PLAN SUPPORT
Robust support and documentation for your plan can be found at the 80/20 Resources page. You will also have access to coach support via our dedicated athlete Helpdesk and our popular Forums.
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How it Works
Quickly view upcoming workouts in the TrainingPeaks app.
Upload completed workouts from your favorite tracking app or device.
Get feedback, stay on top of your training and perform at your best.
Training Plan Sample Week
Saturday Sample Workout Details
Stats
Average Weekly Breakdown
Workouts | Weekly Average | Longest Workout |
---|---|---|
strength
x3
|
01:46:00 | 00:40:00 |
Workouts Per Week | Weekly Average | Longest Workout | |
---|---|---|---|
|
01:46:00 | 00:40:00 |
Training Load By Week
- This plan includes a Free Basic TrainingPeaks Account.
- Access your training plan anywhere on the TrainingPeaks mobile and desktop apps.
- Track your performance with robust data tracking and detailed graphs.
- Plan for your event in the TrainingPeaks calendar.
- Track your weight, sleep, hours, fatigue and stress while you train.
- Completed workouts sync with popular apps like Garmin and Wahoo. Learn More
- If plan includes Structured Workouts, then planned workouts sync to compatible devices and guide you through workouts in real time. Learn More
Refund Policy
This plan is protected by our Refund Policy and may, with the author's approval, be exchanged for a plan of equal value from the same author.
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