Marathon Fueling Strategy: Grams per Hour, Not per 6 km
Build a marathon fueling strategy from your finish time: the same six gels give a 2:30 runner 60 g/h but a 4:30 runner only 33 g/h.
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Race pacing, training zones, and endurance decision-making.
Field-tested guides for runners and triathletes who want practical pacing strategy without guesswork.
5K Workout Plan: Pick Your Level, Then Your Paces
A 5K workout plan for beginner, intermediate and advanced runners: sample weeks, a goal-pace table to the 400 m, and a mile test that sets your target.
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Half Marathon Pacer: Pick the Right Group and Use It
How to use a half marathon pacer: per-km and per-mile pacer chart, which group to join, what closing a start gap costs, and why your watch disagrees.
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Walking Speed Calculator: Pace, MPH, km/h and Finish Times
Walking speed calculator formulas plus a 4–7 km/h table with mph, min/mile and finish times, cadence × step length, and the GPS errors that skew your pace.
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Running Distance Calculator: Pace, Time and Map Methods
Calculate running distance from pace and time, or measure a route on a map. Formula, ready-made table, and the drift errors that add 100–300 m to a run.
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Altitude Conversion Calculator: Feet, Meters, Air and Pace
Convert altitude between feet and meters, then into air pressure and inhaled oxygen. A table from 0 to 3,000 m and the math for turning it into race pace.
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Marathon Race Training Plan: 16 Weeks, Built Backwards
A marathon race training plan for spring 2027: start dates counted back from race day, a 16-week mileage table, pace math, and the holiday weeks to plan around.
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VDOT Jack Daniels Explained: What One Point Is Worth
Jack Daniels' VDOT turns one race into a fitness score and five paces. See what one VDOT point is worth in 5K and marathon time, and where it misleads.
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Running Time Predictor: How Far One Race Result Stretches
A running time predictor turns one race into times for other distances. Riegel's math, why the marathon estimate drifts 10 minutes, and which input to use.
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Pace Converter: Min/km, Min/mile, MPH and km/h
Convert running pace between min/km, min/mile, km/h and mph with exact formulas, chart examples and rounding rules for race plans.
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How to Figure Out Running Pace: Formula and Chart
Figure out running pace from time and distance, convert min/km to min/mile or km/h, and avoid rounding, GPS, and run/walk calculation errors.
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Marathon Split Calculator: Exact KM and Mile Splits
Turn any marathon goal into exact kilometer, mile, halfway, and finish splits. Compare even and negative plans, rounding drift, and race-day adjustments.
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TCS Amsterdam Marathon 2026: Dates, Course and Splits
TCS Amsterdam Marathon 2026 on 17–18 October: full and half sold out, official resale, Amstel wind, 3:00–4:30 splits and what extra distance costs.
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Marathon Pacing Strategies: Four Plans, Real Split Math
Four marathon pacing strategies with checkpoint times for 4:00 and 5:00, why banked time buys only 2.8 s/km per minute, and the 10-10-10 plan.
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Carb Loading for a Marathon: How Many Grams, and When
Carb loading for a marathon in grams: why 8–12 g/kg and the 85–95% rule differ by 245 g a day, what 700 g looks like on a plate, plus a 36-hour schedule.
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Negative Split Running: What 1% Costs Your First Half
A 1% negative split is 63 seconds on a 3:30 marathon and 3 s/km either side of average pace. Split tables, two rules of thumb, and when not to try it.
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Running Lactate Threshold Pace: Which Number Is Yours?
The three common ways to find your running lactate threshold pace disagree by 8–13 s/km. Conversion table, the 30-minute test's error budget, and a fix.
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Running Pace Adjustment for Heat and Humidity (°C and °F)
Convert temperature plus dew point into a pace adjustment in °C or °F, see what each percentage costs in minutes, and calibrate it on your own runs.
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Half Marathon to Marathon Predictor: Which Number to Trust
One half time, four predictions up to 18 minutes apart. The conversion chart, what the 2.085 multiplier really is, and which column to plan with.
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Race Strategy Tools for Runners: What to Check Before You Trust One
How runners should judge a race strategy tool: the seven inputs that change your splits, a rounding-drift table, and a five-minute calibration test.
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Race Day Pacing Plan Printable: What Belongs on the Page
A printable race-day pacing plan needs cumulative clock times, fuel triggers and a pre-decided fallback row — not a pace column. Checkpoint tables and print specs.
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Marathon Pace Calculator Per Mile: Exact Paces, MPH and the 26.2188 Rule
Convert any marathon goal into exact per-mile pace, mph and km/h — plus the divisor test, the watch-overrun rule, and the six checkpoints worth printing.
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Race Pass Pricing for Marathon Tools: What You Actually Pay Per Race
A race pass is a per-event licence. Work out the break-even against an annual plan, avoid the per-generation trap, and check the right things before paying.
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10K to Marathon Predictor: Chart, Formula and Reality Check
Use a 10K to marathon predictor chart, compare Riegel with the 5× minus 10 rule, and turn one race result into a practical pacing range.
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Running Splits by Mile Calculator: Formulas and Split Tables
Use a running splits by mile calculator to turn goal time into exact segment and cumulative splits, including partial miles, rounding, and negative splits.
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Half Marathon Splits Calculator: Exact Mile and Kilometer Paces
Use a half marathon splits calculator to convert any goal time into exact km, mile, halfway, and finish checkpoints, with pacing and rounding examples.
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Marathon Pace Band Calculator: Build Accurate Race Splits
Use a marathon pace band calculator to turn a goal time into printable km or mile checkpoints, compare pacing strategies, and avoid rounding drift.
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Half marathon goal time calculator: find your target pace
Use a half marathon goal time calculator to convert your finish time into pace per km or mile, plus split times at key race checkpoints.
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Daniels VDOT running calculator: find your score and paces
Learn how the Daniels VDOT running calculator converts your race time into a fitness score and 5 training pace zones. Step-by-step guide to using the tool.
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VDOT calculator for running: estimate fitness and race paces
Learn how a VDOT calculator estimates your aerobic fitness from race results and predicts training paces for 5K, 10K, and marathon distances.
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Marathon pacing bands: what they are and how to use them
Learn how marathon pacing bands work, how to calculate them for your race goal, and why course elevation and fitness matter to your splits.
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Race pacing calculator for course elevation: adjust your splits
Learn how elevation pacing calculators adjust your race splits for climbs and descents using grade-adjusted pace and elevation gain data.
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Heat adjusted pace calculator: adjust running pace for temperature
Learn how a heat adjusted pace calculator works and why your running pace slows in hot weather. Adjust effort levels for temperature and humidity.
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Marathon pace predictor: estimate your finish time from recent races
Learn how marathon pace predictors work using Riegel's formula and VDOT. Estimate your finish time from a recent 5K, 10K, or half-marathon result.
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Race day checklist for marathons: gear, nutrition, pacing
Marathon race day checklist covering essential gear, nutrition strategy, logistics, and pacing decisions to reduce errors and execute your race plan.
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Pace predictor marathon: how it works and what data matters
Learn how marathon pace predictors estimate your finish time from recent race data. Understand VDOT models, accuracy factors, and pacing strategy.
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5K race predictor: estimate your finish time accurately
Learn how 5K race predictors work, what data they need, and why accuracy ranges from ±30–90 seconds. Understand Riegel's formula and VDOT-based methods.
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Running pace calculator per km: how to calculate splits
Learn how to calculate running pace per km, use splits for training, and convert between pace and speed with formulas and examples.
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Running pace calculator: elevation, wind & altitude adjustments
Adjust your race pace for elevation gain, headwind, and altitude. Learn grade penalties, wind effects, and how to use pace calculators for realistic splits.
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Marathon pace band printable: create and use during your race
Learn how to create, customize, and print a marathon pace band to track splits by mile. Step-by-step guide with generator tools and race-day tips.
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Marathon goal pace calculator: find your target pace
Use a marathon goal pace calculator to convert your finish time into average pace per mile or kilometer. Learn how to set realistic splits and adjust for terrain.
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VO2 max running calculator: estimate aerobic capacity from race data
Learn how VO2 max running calculators estimate your aerobic capacity using race times or field tests. Discover training zones and pacing strategies.
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Marathon splits calculator: break down your goal pace by distance
Use a marathon splits calculator to convert your goal finish time into per-kilometer pace targets and cumulative checkpoints. Stay on pace during the race.
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Free marathon pacing preview: test your race strategy
Learn how to use free marathon pacing tools to generate splits, pace bands, and race-day checkpoints before committing to a paid strategy.
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