Topic hubs

Follow a running path instead of hunting for the next link.

Each path connects the most useful RunCalcs articles, calculators, sessions, and planning tools for a common runner goal.

Choose a path

Start with the first card, then move left to right.

Runner beginning an easy run on a quiet path

Beginners

Start running

Begin with low-pressure structure, then build toward a simple 5K milestone.

GuideHow do I start running?

Set the first month up with realistic progress.

CalculatorBuild run/walk intervals

Match running and walking to your target distance.

GoalPrepare for your first parkrun

Use a simple 5K milestone to stay consistent.

Improve your 5K

Move from a target time to practical splits, workouts, and race-day execution.

GuideSet a realistic 5K target

Compare goal times and race-day pacing.

CalculatorCalculate your 5K pace

Convert a finish goal into min/km and min/mile.

CalculatorPredict your 5K time

Start with a recent race result.

Race dayWarm up for 5K and 10K

Jog, drill, and stride before the start.

PacingPractice negative splits

Start calmly, hold rhythm, and finish stronger.

TrainingBuild tempo speed

Use threshold work to hold a faster 5K pace.

CalculatorPlan your 5K splits

Break the target into checkpoints.

SessionsPick a faster workout

Use turnover and interval sessions with purpose.

Marathon

Train for marathon

Connect long runs, pacing, tapering, and race preparation into one path.

GuideRun your first marathon

Understand the training arc before race day.

TrainingSet the long run

Choose distances that support the race without overreaching.

TrainingAdd controlled tempo work

Build sustainable speed before race-specific pacing.

PacingPlan even or negative splits

Protect the first 10K and race the final quarter.

CalculatorCalculate marathon pace

Turn finish goals into min/km and min/mile.

CalculatorPredict marathon finish time

Estimate from a recent race, then check durability.

CalculatorBuild marathon checkpoints

Plan even or controlled negative splits.

BenchmarkCompare age-group standards

Use official Boston qualifying times and paces.

Runner restarting gently after an injury break

Recovery

Recover from injury

Restart carefully with recovery timing, low-stress sessions, and strength support.

GuideReturn to running

Restart with patience and clear progression.

CalculatorCheck recovery timing

Balance recent stress, soreness, and rest.

StrengthAdd sensible exercises

Support the return with runner-friendly strength work.

Injury guideUnderstand runner's knee

Connect load management, strength, and return to running.

Illustration of an easy Zone 2 heart rate gauge

Zones

Set training zones

Use heart rate, effort, VO2 max, and easy volume to guide smarter training.

CalculatorCalculate heart-rate zones

Set easy, tempo, threshold, and hard ranges.

GuideUnderstand threshold effort

Place tempo work between easy running and intervals.

GuideUse Zone 2 correctly

Apply talk test, effort, and heart rate together.

CalculatorEstimate VO2 max / VDOT

Translate fitness into training pace references.

Source dataCompare NHANES VO2 percentiles

Use reproducible age-and-sex reference data.