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100 Mile Ultramarathon Training Plans
Build the endurance, durability, and race-day strategy needed to take on your first—or strongest—100 mile ultramarathon.
Training for a 100 mile race is different.
It’s not just about mileage—it’s about how well you manage effort, fueling, and fatigue over time. This 100 mile ultramarathon training plan guides you through that process step by step, helping you stay consistent, avoid burnout, and arrive at race day ready to execute.
Delivered through Final Surge. Sync to your watch and follow each workout with built-in coaching guidance.
Who This Plan Is For
This plan is built for runners who already have a strong endurance foundation and are ready to take on the challenge of a 100 mile race.
Not sure if you’re ready?
Read: Am I Ready for an Ultramarathon?
If you’re not quite there yet, you may want to start with one of these other training plans first.
What Makes This 100 Mile Ultramarathon Training Plan Different
Most plans focus on how much you run. This plan focuses on how you manage the distance.
What To Expect
This plan builds your endurance while preparing you to manage effort, fueling, and fatigue on race day.
What You Get Inside the 100 Mile Ultramarathon Training Plan
The 100 mile running plan follows the following structure and is available for purchase through Coach Andrew Taylor’s Final Surge coaching page. Here’s how the plan is structured to help you build endurance while staying consistent and avoiding unnecessary fatigue.
Overview:
- Duration: 24 Weeks
- Runs Per Week: 5 Days
- Weekly Mileage: ~30–80 miles
- Average Weekly Mileage: 50–65 miles
- Peak Weekly Mileage: ~75–80 miles
Time Commitment:
- Early Phase: 6–8 hours per week
- Build Phase: 8–11 hours per week
- Peak Phase: 10–14 hours per week
- Taper Phase:
Training Structure:
- Easy runs capped at 10 miles
- Medium long runs capped at 15 miles
- Recovery runs capped at 7 miles
- Long runs capped at 30 miles (optional 50K)
- Progressive back-to-back long runs
Strength, Mobility, and Injury Prevention
Includes guidance for light strength, core, and mobility work to support durability without adding unnecessary fatigue.
- Activation warmups before runs
- Optional strength and core work
- Mobility and recovery routines
How It Works
See What a Week Looks Like in the 100 Mile Ultramarathon Training Plan
Here’s a sample week from the plan so you can see how the training is structured and how each day builds toward race readiness.
Week 14 – Build Phase
This is a key week in your training and represents how the plan is designed to work at its best.
The focus is on consistency, controlled effort, and stacking fatigue across multiple days—especially through your long run and back-to-back efforts.
Stay patient early in every run, fuel consistently, and focus on steady forward progress rather than pace.
Rest Day
Rest or Light Movement
Full rest or light movement (walking or Dynamic Drills + Flexibility Routine)
How it should feel:
Easy and relaxed
Coaching cue:
Let your body reset—this sets up the rest of the week.
Adjust if needed:
Feeling tired → full rest
Feeling restless → short walk or Dynamic Drills + Flexibility Routine
Goal:
Recover and prepare
Easy Run + Strides
9–10 miles – Easy (RPE 4–5)
+ 4–6 × 20-second strides
Include 5–10 minutes of activation work before your run.
How it should feel:
Comfortable and smooth
Coaching cue:
Let your stride stay relaxed—this is about rhythm and efficiency, not effort.
Adjust if needed:
Tired → skip strides
Feeling good → keep them controlled
Goal:
Maintain coordination and running economy
Medium Long Run
14–15 miles – Easy (RPE 4–5)
Start with 5–10 minutes of light activation before heading out.
How it should feel:
Steady and controlled
Coaching cue:
Stay disciplined—this run supports your long efforts, so avoid letting effort creep up late.
Adjust if needed:
Fatigue → shorten slightly
Busy day → split into 2 runs
Goal:
Support volume while preserving energy for the weekend
Recovery Run
6–7 miles – Recovery (RPE 2–3)
Optional: include a short 5-minute activation if it helps you loosen up.
How it should feel:
Very easy and relaxed
Coaching cue:
If this feels like effort, slow down or shorten—recovery is the priority.
Adjust if needed:
Legs heavy → run/walk
Still fatigued → shorten
Goal:
Promote recovery and maintain consistency
Rest or Light Movement
Rest day or light activity (walking or Dynamic Drills + Flexibility Routine)
How it should feel:
Low demand
Coaching cue:
Stay patient—this day helps set up your most important efforts.
Adjust if needed:
Tired → full rest
Feeling restless → short walk or Dynamic Drills + Flexibility Routine
Goal:
Prepare for long efforts
Strength & Core (Optional)
15–20 minutes light strength or mobility
Options:
Strength
Core
Mobility
How it should feel:
Controlled and steady
Coaching cue:
Focus on stability and control—this supports your ability to stay efficient under fatigue.
Adjust if needed:
Tired → shorten or skip
Feeling good → keep it controlled
Goal:
Support durability and efficiency
Long Run
28–30 miles – Easy (RPE 4–5)
(Optional: 50K race or effort)
Include 5–10 minutes of activation work before starting.
How it should feel:
Comfortable early, gradually more demanding
Coaching cue:
Stay patient early—your goal is to finish steady, not fast.
Adjust if needed:
Fatigue → shorten slightly
Feeling strong → stay within the cap
Goal:
Build endurance and simulate race effort
Additional focus:
Practice fueling consistently from the start and use planned walk breaks to stay in control throughout the run.
Back-to-Back Long Run
20–22 miles – Easy (RPE 4–5)
Take a few minutes to activate before the run, especially if your legs feel stiff.
How it should feel:
Fatigued and steady
Coaching cue:
This is the most important run of the week—focus on staying steady and moving forward, regardless of how you feel.
Adjust if needed:
Very fatigued → shorten
Overwhelmed → include walk breaks
Goal:
Build fatigue resistance and simulate late-race effort
Additional focus:
This run teaches you how to manage effort when tired—stay consistent with pacing and fueling even if things feel off.
Every run includes effort guidance, coaching cues, and adjustments—so you always know how to approach your training.
Frequently Asked Questions
This plan is designed for runners who have completed a 50K, 50 mile, or similar endurance event and can consistently run 45–55 miles per week. If you’re not there yet, consider starting with a shorter distance plan such as a marathon training plan.
Most runners will train between 6–14 hours per week depending on the phase. Peak weeks require the most time, especially with long run and back-to-back days.
No. This plan is built around effort (RPE), not rigid pacing or exact mileage. You’re encouraged to adjust based on how you feel while staying consistent over time.
Skip it and move forward. Avoid trying to make up missed miles—consistency matters more than any single run.
This plan focuses on managing effort, fatigue, and race execution—not just accumulating mileage. With built-in coaching cues and flexible structure, it’s designed to help you train smarter and stay consistent.
This is a general 100 mile plan. If your race includes significant elevation or technical terrain, you should adjust your routes and effort to match race conditions.
Yes. The plan includes guidance for light strength, core, and mobility work to support durability without adding unnecessary fatigue.
Yes. The structure is flexible and designed for real-life schedules. You can shift days or adjust volume as needed while keeping the overall flow of the week intact.
Reduce volume, shorten runs, or take additional rest. Learning to adjust is part of training for a 100 mile race. These cues are built into the training plan to help you understand when and how to adjust.
No. This plan is effort-based. The focus is on staying controlled, fueling consistently, and managing energy over time—not hitting specific paces.
Schedule a 15-minute consultation to get personalized guidance before you start.
Ready to Train for Your 100 Mile Race?
Build your endurance, refine your strategy, and prepare to go the distance with confidence.
Delivered instantly through Final Surge. Sync to your watch, track your progress, and follow your plan day by day.
Includes coaching cues and built-in adjustments in every workout.