Calculadora de Ritmo de Carrera
Ritmo por kilómetro y por milla a partir de tu tiempo y distancia, tiempos finales a cualquier ritmo, parciales y predicción de marcas
Ritmo a partir de tiempo y distancia, tiempo final a partir de un ritmo o distancia a partir de tiempo y ritmo, con parciales y predicciones
Las predicciones suponen que has entrenado para la distancia. El calor, las cuestas y el viento nos frenan a todos, así que tómalas como una guía, no como una promesa.
Última actualización: noviembre 4, 2026
Equipo que te ayuda a mantener el ritmo
Un reloj GPS muestra tu ritmo mientras corres y unas zapatillas de tu talla te mantienen en la carretera. Cambia las zapatillas cada 500 a 800 km aproximadamente.
Como Afiliado de Amazon, ganamos por las compras que cumplen los requisitos.
How Running Pace Is Calculated
Pace is time divided by distance, written as minutes and seconds per mile or per kilometre. Speed is the same thing turned upside down. Any two of time, distance and pace give you the third:
Pace from a result
Pace = time / distance. A 10K in 55:00 is 3,300 seconds / 10 km = 330 seconds, or 5:30 per km (8:51 per mile).
Finish time from a pace
Time = pace x distance. 10:00 per mile over a half marathon (13.109 miles) is 2:11:06.
Distance from time and pace
Distance = time / pace. Running 45 minutes at 6:00 per km covers 7.5 km (4.66 miles).
Race distances use the official lengths: a mile is 1.609344 km, a marathon 42.195 km (26.219 miles) and a half marathon 21.0975 km (13.109 miles). Pacing a marathon as exactly 26.2 miles is less than a second per mile off, but over the whole race it adds up to about 10 seconds.
Pace Chart: Finish Times for 5K, 10K, Half Marathon and Marathon
Even pace from start to finish, from 6:00 to 13:00 per mile in 30-second steps:
| Per mile | Per km | mph | km/h | 5K | 10K | Half marathon | Marathon |
|---|---|---|---|---|---|---|---|
| 6:00 | 3:44 | 10.00 | 16.09 | 18:38 | 37:17 | 1:18:39 | 2:37:19 |
| 6:30 | 4:02 | 9.23 | 14.86 | 20:12 | 40:23 | 1:25:13 | 2:50:25 |
| 7:00 | 4:21 | 8.57 | 13.79 | 21:45 | 43:30 | 1:31:46 | 3:03:32 |
| 7:30 | 4:40 | 8.00 | 12.87 | 23:18 | 46:36 | 1:38:19 | 3:16:38 |
| 8:00 | 4:58 | 7.50 | 12.07 | 24:51 | 49:43 | 1:44:53 | 3:29:45 |
| 8:30 | 5:17 | 7.06 | 11.36 | 26:24 | 52:49 | 1:51:26 | 3:42:52 |
| 9:00 | 5:36 | 6.67 | 10.73 | 27:58 | 55:55 | 1:57:59 | 3:55:58 |
| 9:30 | 5:54 | 6.32 | 10.16 | 29:31 | 59:02 | 2:04:32 | 4:09:05 |
| 10:00 | 6:13 | 6.00 | 9.66 | 31:04 | 1:02:08 | 2:11:06 | 4:22:11 |
| 10:30 | 6:31 | 5.71 | 9.20 | 32:37 | 1:05:15 | 2:17:39 | 4:35:18 |
| 11:00 | 6:50 | 5.45 | 8.78 | 34:11 | 1:08:21 | 2:24:12 | 4:48:24 |
| 11:30 | 7:09 | 5.22 | 8.40 | 35:44 | 1:11:27 | 2:30:45 | 5:01:31 |
| 12:00 | 7:27 | 5.00 | 8.05 | 37:17 | 1:14:34 | 2:37:19 | 5:14:38 |
| 12:30 | 7:46 | 4.80 | 7.72 | 38:50 | 1:17:40 | 2:43:52 | 5:27:44 |
| 13:00 | 8:05 | 4.62 | 7.43 | 40:23 | 1:20:47 | 2:50:25 | 5:40:51 |
Race-Time Predictions From One Result
Riegel's formula, T2 = T1 x (D2 / D1)1.06, turns one race into equivalent efforts at other distances. The predicted pace gets slower as the race gets longer:
| Your result | Its pace | 5K | 10K | Half marathon | Marathon |
|---|---|---|---|---|---|
| A 30:00 5K | 9:39 /mi | 30:00 | 1:02:33 | 2:18:00 | 4:47:44 |
| A 25:00 5K | 8:03 /mi | 25:00 | 52:07 | 1:55:00 | 3:59:47 |
| A 50:00 10K | 8:03 /mi | 23:59 | 50:00 | 1:50:19 | 3:50:01 |
| A 2:00:00 half marathon | 9:09 /mi | 26:05 | 54:23 | 2:00:00 | 4:10:12 |
The predictions assume you have trained for the longer race. A 5K runner without long runs in their legs usually finishes a first marathon slower than the formula says.
Using Splits on Race Day
The splits table in the results shows where you should be at every mile or kilometre to finish on time at an even pace. Even or slightly negative splits (a second half a little faster than the first) are how most personal bests are run. Starting 10 to 15 seconds per mile too fast feels easy in the first few miles and is paid back, with interest, near the end.
Write the times for a few checkpoints on your hand or set a target pace on a GPS watch, and remember that the watch usually reads a little long: course measurers use the shortest possible line, and almost nobody runs it.
Training Paces
Most of your running should be slower than race pace. A common rule is to keep easy runs 60 to 90 seconds per mile slower than your marathon pace, at an effort where you can talk in full sentences, and to save faster running for one or two sessions a week. Enter a recent race result above, read off the predicted marathon pace, and build your easy pace from there.
Cómo lo calculamos
- Método
- Pace = time / distance; finish time = pace x distance; Riegel race-time equivalents
- Fórmula
-
Seconds per km = time (s) / distance (km); seconds per mile = seconds per km x 1.609344. Finish time = pace x distance; distance = time / pace. Speed (km/h) = 3,600 / seconds per km; mph = km/h / 1.609344. Race equivalent (Riegel): T2 = T1 x (D2 / D1)^1.06. Distances: mile 1.609344 km, 5K 5 km, 10K 10 km, half marathon 21.0975 km, marathon 42.195 km. - Fuente
- Riegel PS, "Athletic Records and Human Endurance", American Scientist 1981;69(3):285-290 (exponent 1.06). Race distances from World Athletics Competition Rules (marathon 42.195 km). International mile = 1,609.344 m (International Yard and Pound Agreement, 1959).
- Limitaciones
- Even-pace splits and finish times are exact arithmetic. Riegel predictions are an average fit to race results: most reliable from about 1.5 km to the marathon, for runners trained for the longer distance; heat, hills, wind and fuelling are not modelled. GPS watches often record a race as slightly longer than its certified distance.
- Última revisión
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