Getting In
8 toolsThe math of getting a bib: marathon ballot odds, major qualifying standards and the buffer you need for Boston.
Ballot SimulatorSimulate your marathon ballot odds for every major, from real entry data.Getting In
Qualification CheckerCheck if your marathon time qualifies you for any of the seven majors.Getting In
BQ Buffer CalculatorThe buffer you need under your Boston qualifying time to actually get in.Getting In
Boston Cutoff TrackerScore your BQ buffer against every real Boston cutoff since 2012, straight from B.A.A. registration numbers.Getting In
BQ Times by AgeYour age group's Boston qualifying time plus the standard at every other Major, with the pace it takes.Getting In
London GFA CheckerYour age, division and marathon time against London's Good For Age standard, with margin, the ballot window and the fastest-first cap.Getting In
Ballot Calendar CountdownLive countdowns to every open, close, draw and race day across all 8 Majors, with one click .ics downloads.Getting In
Ballot Strategy CalculatorTick the marathon ballots you plan to enter for your combined chance of at least one acceptance, fees at risk, and date clashes.Getting In
Training
3 toolsRace time prediction for the build: what your recent results say about your marathon.
Race Time PredictorPredict your marathon time from a recent 5K, 10K or half marathon result.Training
Training Pace CalculatorTurn one race result into your five Daniels training paces: easy, marathon, threshold, interval, repetition.Training
Heart Rate Zone CalculatorKarvonen heart rate reserve zones from your age or known max HR, plus resting HR: five training zones in bpm.Training
Pace & Time
6 toolsRunning pace math: min/km and min/mile, splits and finish times for any distance.
Pace CalculatorSolve running pace, time or distance from the other two, with full splits.Pace & Time
Pace ConverterConvert running pace between min/km, min/mile, mph and kph, plus finish times.Pace & Time
Treadmill Pace CalculatorConvert treadmill speed and incline to the equivalent flat outdoor pace, both directions, mph and km/h.Pace & Time
Age Graded CalculatorScore any road result on the 2025 WMA factors: age grade percentage, open-equivalent time and class.Pace & Time
Goal Pace CalculatorPick a goal marathon time, sub-3 to sub-5, and get the required pace and splits.Pace & Time
Pace Band GeneratorPrintable pace band with elevation adjusted splits for the real course of 7 Marathon Majors.Pace & Time
Race Day
2 toolsRace morning math: fueling, corrals, weather and the splits plan for the day.
The Majors
3 toolsThe eight majors side by side: costs, countdowns and course comparisons.
Course Time ConverterConvert a finish time from one Marathon Major to an elevation-adjusted equivalent on another, plus a difficulty ranking of all eight courses.The Majors
Majors Cost CalculatorTick the majors you want to run, entry route or charity route, and add up what's cleanly parseable from each race's own published fee.The Majors
Six Star TrackerCheck off the Majors you've finished and see ballot odds, entry windows and the realistic path to the rest, all 8 including Cape Town.The Majors
Fun & Share
1 toolNovelty running math: your numbers against the pros and the outliers.