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What’s your next finish line?

Pick your target distance below to build a custom, day-by-day running plan calibrated with Jack Daniels’ VDOT pace zones and injury-safe periodization.

VDOT Pace Calibration Every-4th-Wk Deloads Free PDF & .ICS Export
Trail runner running along coastal green ridge at sunrise
Runner’s Cove Training Lab
Smart Pacing · Injury-Safe Progression
v2.5

How StrideAi Works

Get your custom training plan in four simple steps.

01

Select Distance

Choose your target race: 1 Mile, 5K, 10K, Half, Full Marathon, or 50K/100K Ultra.

02

Share Fitness Level

Tell us how many days a week you run and your preferred weekend long run day.

03

Set Your Goals

Input recent race times or target finish goals to calibrate your VDOT training paces.

04

Train & Export

Get your day-by-day schedule and export it to PDF, CSV, or your Calendar.

Runner performing a lactate threshold and VO2 max workout
Exercise Physiology

Every workout phase is calibrated to your aerobic threshold, VO2 max, and recovery needs.

The Science Behind Our Training Plans

From a fast 1 Mile track block to a 100K ultra marathon, structured periodization keeps you progressing safely. StrideAi applies progressive overload, step-back recovery weeks, and polarized training (the 80/20 rule) alongside Jack Daniels’ VDOT pace formulas to target the exact physiological system required for every run.

Progressive Overload

Weekly volume scales gradually with step-back recovery weeks every 3–4 weeks so tendons and joints adapt without breaking down.

Polarized 80/20 Pacing

Conversational easy runs surround speedwork and weekend long runs so glycogen stores replenish before your next key effort.

Training Block Benchmarks by Race Distance (1 Mile to 100K Ultra)

Standard duration, weekly run frequency, peak long run targets, and physiological focus used by StrideAi. Click any distance to customize your plan.

80/20 Polarized + Every-4th-Wk Deload
Comparison of StrideAi running training plans by race distance, duration in weeks, weekly run frequency, peak long run distance, physiological focus, and recommended running shoe guides.
Race DistancePlan LengthRuns / WeekPeak Long RunPrimary Physiological FocusRecommended Gear Guide
6 Weeks3–6 Days4–8 miVO2 max turnover, 200m–800m track repeats & running economySpeed & Track Shoes →
8 Weeks3–6 Days5–9 miAerobic base + VO2 max intervals (400m–1000m repeats)5K Running Shoes →
10 Weeks3–6 Days7–12 miLactate threshold cruise intervals & stamina progression10K Running Shoes →
12 Weeks3–6 Days11–15 miSustained tempo runs, threshold clearance & 2-week taperHalf Marathon Shoes →
16 Weeks4–6 Days18–20 miGlycogen durability, marathon goal-pace blocks & 3-week taperMarathon Running Shoes →
16 Weeks4–6 Days20–24 miBack-to-back weekend long runs, uphill hiking & 60–90g/hr fuelingTrail & Ultra Shoes →
20 Weeks4–6 Days26–32 miMountain durability, back-to-back weekends, night gear & GI trainingMax-Cushion Trail Shoes →
8 Weeks3–5 Days35–60 minLow-stress conversational Zone 2 habit & run/walk intervalsDaily Running Shoes →

Reference Training Pace Zones by Race Time (5K, Half Marathon & Marathon)

Sample Jack Daniels VDOT & Riegel training pace zones showing why Easy Runs stay 60–120 seconds slower than race pace.

Full Pace Calculator
Reference running training pace chart showing Easy Run Pace, Marathon Pace, Lactate Threshold Tempo Pace, and VO2 Max Interval Pace for equivalent 5K, Half Marathon, and Marathon finish times.
5K BenchmarkEquivalent HalfEquivalent MarathonEasy / Long Run (Zone 2)Tempo / ThresholdVO2 Max Intervals
20:00 (6:26/mi)1:32:003:12:008:00–8:30 /mi6:48 /mi6:20 /mi
22:30 (7:14/mi)1:43:303:36:009:00–9:34 /mi7:38 /mi7:08 /mi
25:00 (8:03/mi)1:55:004:00:0010:00–10:38 /mi8:30 /mi7:55 /mi
28:00 (9:01/mi)2:09:004:28:0011:10–11:54 /mi9:30 /mi8:52 /mi
32:00 (10:18/mi)2:27:005:05:0012:45–13:35 /mi10:52 /mi10:08 /mi
36:00 (11:35/mi)2:45:305:42:0014:20–15:15 /mi12:14 /mi11:25 /mi

Explore More on Runner’s Cove

Pair your training plan with our shoe reviews, fueling calculators, and release calendar.

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Track upcoming running shoe launch dates across Nike, Brooks, HOKA, and Saucony.

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Marathon Guides, Distance Listicles & Race Prep

Everything you need for race morning—from carbon-plated marathon shoes and fueling calculators to local race calendars.

Race Training Timeline Guide

Race Shoes by Distance

Buyer’s Guides
Best Marathon Running Shoes26.2 mi Best Half Marathon Running Shoes13.1 mi Best 10K Running Shoes for Race Day6.2 mi Best 5K Running Shoes to PR3.1 mi Best Carbon-Plated Race ShoesSuper Shoes Best Trail Running Shoes50K / 100K

Race Strategy & Pacing

Prep & Fuel
How Long to Train for a 5K, 10K, Half, or MarathonTimeline Marathon Fueling & Carbohydrate CalculatorGels/Hr Race Potential Time PredictorPredictor Running Split & Negative Split CalculatorSplits What Actually Happens at Your First 5K?1st Race How to Choose a Running Hydration VestUltras

Race Listicles & Events

Listicles
Disney Marathon Running Shoes & runDisney GuiderunDisney Halloween 5Ks, Races & Runs Calendar (FL)Race List Valentine’s Day Races in Tampa & St. Pete5K / 10K The Types of Runners You’ll Meet at a 5KCulture Best Super Trainers for Marathon TrainingSpeed Race-Morning Car Trunk Essentials ChecklistChecklist

Brandon S.

Founder, StrideAi & Runner’s Cove

“I built StrideAi because I needed a better way to create structured, periodized training plans for my friends, the athletes I coach, and myself. I used the AI-generated 5K plan for my own training block and improved my PR by over 2 minutes. It takes the guesswork out of pacing and progression.”

Frequently Asked Questions

Everything you need to know about our AI running plans, VDOT pacing, and distance training.

About StrideAi

How does the AI generate my training plan?

StrideAi uses advanced language models trained on exercise science, coaching methodologies, and endurance training principles alongside server-side Jack Daniels VDOT and Riegel pace math. It takes your specific inputs (fitness level, days per week, preferred long run day, and goal times) and structures a periodized plan tailored to your routine.

Is StrideAi really free?

Yes! StrideAi is a completely free tool developed by Runner's Cove. We believe high-quality, personalized training plans should be accessible to everyone, not just those who can afford a private coach.

Can I print or export my training plan?

Yes! Every generated plan includes one-click export buttons at the top of your schedule for PDF (ready to print), CSV (for spreadsheets), and .ics Calendar (for Apple, Google, or Outlook Calendar). Your active plan is also saved automatically in your browser.

What training philosophy does the AI use?

The AI is heavily influenced by the 80/20 running rule (80% easy, 20% hard) popularized by Matt Fitzgerald, and uses pace calibration formulas based on Jack Daniels' VDOT tables to ensure your workouts target the right physiological intensity.

General Training Questions

Are these running plans good for beginners?

Yes! StrideAi customizes every plan based on your current fitness level. If you select “Beginner”, the AI generates a supportive run/walk approach that safely builds your aerobic base without overwhelming your joints.

What pace should I run my easy runs?

Easy runs should be done at a conversational pace—typically 1 to 2 minutes per mile slower than your goal race pace. Our AI factors in your recent race times to provide specific target paces for every workout, or you can check our Running Pace Calculator.

How many days a week should I run?

Beginners do best starting with 3 days a week to allow for tendon and muscle recovery. Intermediate runners usually run 4–5 days, while advanced runners often run 5–6 days. StrideAi lets you select your preferred weekly frequency and builds the schedule around it.

What should I do if I miss a workout?

Don't panic! If you miss one day, just move on to the next scheduled workout. Never try to “make up” missed miles by cramming them into your next run, as sudden volume spikes significantly increase injury risk.

Should I strength train while running?

Absolutely. Strength training 1–2 times a week (focusing on calves, glutes, core, and single-leg stability) prevents overuse injuries and improves running economy. Schedule these sessions on your easy running days or cross-training days.

What is a tempo run?

A tempo run is a sustained effort at your lactate threshold pace—roughly a pace you could hold for about an hour in a race. It should feel “comfortably hard” and teaches your body to clear lactate efficiently at faster speeds.

How do I prevent shin splints?

Prevent shin splints by increasing weekly mileage gradually, rotating supportive running shoes for shin splints, running on forgiving surfaces when possible, and strengthening your calves and tibialis anterior.

5K Training

Read our guide on the Best 5K Running Shoes

How can I run a faster 5K?

To run a faster 5K, you need to incorporate speedwork—like interval training (400m or 800m repeats), tempo runs, and neuromuscular strides—into your weekly routine. StrideAi generates 5K PR plans that balance these high-intensity efforts with easy recovery runs.

How long does it take to train for a 5K from scratch?

If you are starting from zero, a standard Couch-to-5K style plan takes about 8 weeks. This allows your bones, tendons, and cardiovascular system to adapt safely using progressive run/walk intervals.

What is a good 5K time for a beginner?

For a true beginner, finishing a 5K without stopping is a great milestone! Time-wise, most first-timers finish between 30 and 40 minutes (roughly a 10:00 to 13:00 minute/mile pace). Check out our first 5K beginner’s guide for what to expect on race morning.

Should I run a 5K before race day?

Yes, unlike a marathon, it is completely normal (and recommended) to run the full 3.1-mile distance in training before your 5K race. For intermediate and advanced runners, weekend long runs in a 5K plan will often reach 5 to 8 miles.

10K Training

Read our guide on the Best 10K Running Shoes

What is a good 10K training plan for beginners?

A good beginner 10K plan spans 8 to 10 weeks and focuses on steadily building aerobic endurance through easy-paced continuous running and a gradually increasing weekend long run.

How long is a 10K in miles?

A 10K is 10 kilometers, which equals 6.21 miles. You can convert any race distance or split using our Miles to Kilometers Converter.

How far should my longest run be before a 10K?

For beginners, reaching 5.5 to 6 miles in training is plenty to finish strong on race day. For intermediate or advanced runners chasing a 10K PR, the weekend long run typically peaks between 7 and 10 miles.

Half Marathon Training

Read our guide on the Best Half Marathon Running Shoes

How many weeks do I need for a half marathon training plan?

A standard half marathon training plan takes 10 to 14 weeks (StrideAi uses a 12-week periodized block). If you already have a strong running base of 15+ miles per week, you can prepare in 8 to 10 weeks.

How long is a half marathon?

A half marathon is 13.1 miles, or 21.1 kilometers.

What is the longest run in a half marathon plan?

Most beginner half marathon plans peak with a 10 or 11-mile long run 2 weeks before race day. Intermediate and advanced plans typically peak between 12 and 14 miles.

How do I fuel during a half marathon?

For efforts lasting over 75–90 minutes, aim to consume 30–60 grams of carbohydrates per hour. That usually means taking an energy gel or chews every 30–40 minutes with water. Practice your exact gel timing on your weekend long runs!

Marathon Training

Read our guide on the Best Marathon Running Shoes

How long does it take to train for a marathon?

Most runners need 16 to 20 weeks to train for a marathon safely. Our AI-generated marathon plans are structured around a 16-week build-up with every-4th-week recovery cutbacks and a 3-week taper before race day.

What is the longest run before a marathon?

Most marathon training plans peak with a long run of 18 to 20 miles, usually completed 3 weeks before race day. Running further than 20 miles in a single training session increases recovery time and injury risk for most recreational runners.

What is tapering in marathon training?

Tapering is the 2 to 3-week period right before your marathon where you systematically reduce your weekly mileage while keeping a few short race-pace touches. This lets muscle micro-tears fully repair and tops off muscle glycogen stores for race morning.

What is “hitting the wall”?

“Hitting the wall” (usually around mile 18–20) happens when your body depletes its stored glycogen and is forced to rely primarily on fat oxidation. You can prevent it through disciplined early pacing and taking in 60g+ of carbohydrates per hour using our Marathon Fueling Calculator.

1 Mile Track & Ultra Marathon Training (50K / 100K)

Read our guide on the Best Trail Running Shoes

How does StrideAi structure 50K and 100K Ultra marathon plans?

Our 16-week 50K and 20-week 100K Ultra plans focus on time-on-feet durability, back-to-back weekend long runs, uphill power-hiking efficiency, and 60–90g/hr carbohydrate gut training—with recovery cutback weeks every 4th week and a 3-week taper.

What is a back-to-back long run in ultra training?

Instead of running 35+ miles in a single risky training session, ultra runners split peak weekend volume across two consecutive days (for example, 18–22 miles on Saturday followed by 10–14 easy miles on Sunday). This teaches you to run efficiently on fatigued legs while keeping musculoskeletal stress manageable.

How do I train for a fast 1 Mile race?

The 1 Mile distance is roughly 80% aerobic and 20% anaerobic. Our 6-week 1 Mile plan combines an aerobic base with 200m/400m repetition intervals at goal mile pace, VO2 max 800m repeats, and relaxed neuromuscular strides.

What if my generated plan feels too hard or too easy?

Once your plan is generated, scroll below the weekly schedule and click Make It Easier or Make It Harder. StrideAi will immediately recalibrate your weekly mileage and workout intensity while preserving your preferred long run day.

Patch Notes & Roadmap

Track our latest coaching updates, interactive features, and where StrideAi is headed next.

2027 Goal • Community Roadmap

Exploring a Dedicated StrideAi Mobile App

If community usage and runner adoption continue to grow, our goal for 2027 is to bring StrideAi to a dedicated mobile app experience—making it even easier to check off daily workouts on the go, view your VDOT pace zones offline, and sync training schedules directly with your watch.

Latest Update • v2.5

Race-Date Calibration, Interactive Progress & Smarter Intake

  • Exact Target Race-Date Alignment: Pick an optional race date to automatically calibrate your plan duration and lock your final week's Race Day workout to the exact calendar date.
  • Interactive Workout Check-Offs & Graph Progress: Log completed runs and full training weeks with live progress bars directly on the weekly mileage chart, plus upgraded Shareable Blueprint Cards.
  • Personalized Base, Terrain & Weekly Adaptations: Customize plans by current weekly mileage, course surface (road, hills, trail, or track/treadmill), and 1-tap weekly adjustments for heat, treadmill incline, or busy weeks.
v2.0 Release

Expanded Distance Support (1 Mile, 50K & 100K Ultra)

  • 1 Mile Track Plans (6 Weeks): Speed and VO2 max blocks featuring 200m–800m track intervals, strides, and aerobic recovery runs.
  • 50K & 100K Ultra Endurance (16–20 Weeks): Ultra-specific periodization with back-to-back weekend long runs, uphill power-hiking cues, and 60–90g/hr fueling practice.
  • Runner's Cove Brand Integration & VDOT Engine: Unified dark-slate design system, automatic browser plan saving, and server-side Jack Daniels VDOT pace zone calibration.
March 20, 2026

Training Load & UX Enhancements

  • Training Load Chart: Interactive area chart to visualize weekly mileage progression.
  • Smarter Workout Structure: Mandatory warmups, main efforts, and cooldowns with exact target paces.
  • Export & Feedback: Visual confirmation states for PDF, CSV, and Calendar downloads.
March 18, 2026

Initial Launch of StrideAi

  • AI Plan Generation: Custom plans for 5K, 10K, Half Marathon, Marathon, and Get Fit.
  • Multi-Format Export: Download your plan as a PDF, CSV, or .ics Calendar file.
RUNNER'S COVEStrideAi

Science-backed running shoe reviews, interactive pace & fueling calculators, and custom AI training plans from the 1 Mile to 100K Ultras.

Interactive Tools

  • Running Pace Calculator
  • VO2 Max & VDOT Calculator
  • Marathon Fueling & Gel Calculator
  • Sweat Rate & Hydration Calculator
  • Interactive Running Shoe Finder

Shoe Buying Guides

  • Best Running Shoes (Daily Trainers)
  • Best Marathon Running Shoes
  • Best Half Marathon Shoes
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Runner's Cove

  • Training Tips & Guides
  • Shoe Release Dates Calendar
  • Shoe Wear Pattern Analysis
  • About Runner's Cove

Disclaimer: StrideAi generates AI-powered training plans for informational purposes only. These plans are recommendations and do not constitute professional medical or athletic coaching advice. Always consult with a healthcare professional before starting any new exercise program, listen to your body, and adjust your training as needed to prevent injury.

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