Race Day Tools

Tools for the weeks before a race and the morning of it: plan your splits, predict your time, print a pace band and check your Boston qualifying standard.

What is here

The race pace calculator turns a goal time into a split for every mile or kilometre, with even, negative or positive pacing. The race time predictor estimates your time at other distances from one race, and the training pace calculator turns that race into easy, tempo and interval paces. For the race itself, the pace band generator prints a wristband with your target time at every marker, and the Boston qualifying times page shows the 2027 standards with a calculator for your age group.

Predictions use published formulas (Riegel 1981 and Daniels & Gilbert 1979); how they work and where they are less reliable is explained on the methodology page.

Tools in this group

• Boston Marathon Elevation Profile and Pace Band — See the course profile and get a pace band whose splits follow the hills, with the total always equal to your goal time.
• Boston Marathon Qualifying Times Calculator — See your Boston qualifying standard for 2027 and how far your marathon time is from it.
• Marathon Pace Band Generator — Type your goal time to make a printable pace band with a split for every mile or km.
• Race Pace Calculator — Enter a race and goal time to get your pace and a split for every mile or kilometre.
• Race Time Predictor — Enter a recent race time to predict your time at other distances.
• Training and Tempo Pace Calculator — Enter a recent race to get the paces for every kind of training run.