What is a race time predictor?

A race time predictor estimates your finish times at other distances from one recent race result. By entering a known time, you can forecast your likely 5K, 10K, half-marathon and marathon performances to help set realistic pacing and goals.

How accurate is the Riegel race prediction formula?

Riegel's formula scales time with distance using an endurance exponent of about 1.06. It is most accurate for distances close to your input race and for well-trained runners; predictions for much longer events assume adequate endurance training.

Why is my predicted marathon time slower than expected?

Longer races expose endurance and fueling limits that short races do not, so the formula intentionally adds time as distance grows. If your marathon training is strong you may beat the estimate; if undertrained, you may fall short.

Løbstid-forudsiger

Forudsig fra 5K til maraton ud fra ét nyligt resultat

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Kendt distance (km)

et nyligt løb eller en tempotest

min

sek

Løbstid-forudsiger

Ét ærligt løb eller en tempotest kan forudsige dine tider på andre distancer. Indtast den distance, du løb, og den tid, det tog, så bruger denne forudsiger den velkendte Riegels formel til at estimere dine tider på 1500 m, 5K, 10K, 10 miles, halvmaraton og maraton, med tempo pr. kilometer for hver. Forudsigelser forudsætter lignende forhold, og at du træner hensigtsmæssigt til de længere løb — de fastsætter realistiske løbsmål og tempolægning.

Bruger Riegels formel (T2 = T1 × (D2/D1)^1.06). Forudsigelser forudsætter lignende forhold og passende udholdenhedstræning til den længere distance; uden tilstrækkelig forberedelse med lange ture er reelle maratontider normalt langsommere end forudsagt.

Ofte stillede spørgsmål

What is a race time predictor?: A race time predictor estimates your finish times at other distances from one recent race result. By entering a known time, you can forecast your likely 5K, 10K, half-marathon and marathon performances to help set realistic pacing and goals.
How accurate is the Riegel race prediction formula?: Riegel's formula scales time with distance using an endurance exponent of about 1.06. It is most accurate for distances close to your input race and for well-trained runners; predictions for much longer events assume adequate endurance training.
Why is my predicted marathon time slower than expected?: Longer races expose endurance and fueling limits that short races do not, so the formula intentionally adds time as distance grows. If your marathon training is strong you may beat the estimate; if undertrained, you may fall short.

Løbstid-forudsiger

Ofte stillede spørgsmål

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