Phần hướng dẫn bên dưới chưa có bằng tiếng Việt nên được hiển thị bằng tiếng Anh. Bản thân máy tính đã được dịch đầy đủ.
Cách sử dụng máy tính này
- Choose what to solve for: pace, time or distance.
- Choose kilometers or miles.
- Enter the two known values. Time is entered as hours, minutes and seconds; pace as minutes and seconds per km or mile.
Công thức
Pace, time and distance are linked by a simple equation. Race predictions use Riegel's formula, which accounts for slowing down over longer distances.
pace = time / distance
time = distance × pace
Riegel: T₂ = T₁ × (D₂ / D₁)^1.06
Example
- 10 km in 50:00 → pace = 3,000 s / 10 = 300 s = 5:00 per km.
- Per mile: 5:00 × 1.609344 ≈ 8:03 per mile; speed 12 km/h.
- Predicted half marathon: 50:00 × 2.10975^1.06 ≈ 1:50:21.
Câu hỏi thường gặp
How accurate are race predictions?
Riegel's formula works well for trained runners between about 3 minutes and 4 hours of effort. Predictions for the marathon are often optimistic unless you've done the long-run training.
What is a good running pace?
It depends on age, experience and distance. For many recreational runners, 5:30–7:00 per km (9–11 minutes per mile) is a comfortable training pace.
How do I convert min/km to min/mile?
Multiply the pace in seconds per km by 1.609344. For example, 5:00/km × 1.609344 = 8:03/mile.