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Sports Race Timing Stopwatch

Time running laps, swimming sets, cycling intervals, and other athletic training sessions with precision.

មិនចាំបាច់ចូលគណនី
00:00.00
Ready

Keyboard: Space start/stop · L lap · R reset

Sports tips

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For 400m track repeats, use lap recording for each lap. The fastest/slowest lap highlighting shows consistency — top athletes vary by less than 1 second.

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Swimming sets: lap at each 100m or 200m interval. Compare lap times to identify whether you fade in the back half of long sets.

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Cycling intervals: time your power efforts (e.g., 5 × 5 minutes at threshold). The lap button captures each effort separately for analysis.

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Use the L key shortcut to record laps without breaking your focus — keep eyes on the road or track instead of fumbling with the screen.

វាដំណើរការដោយរបៀបណា

1
បញ្ចូល
Enter your data into the tool above. Everything stays local to your browser.
2
ដំណើរការ
The tool processes your data instantly in your browser using JavaScript. No server, no waiting.
3
ទាញយក
Get your result instantly. Nothing is stored after you leave the page — complete privacy.

ហេតុអ្វីត្រូវប្រើរបស់យើង?

ឥតគិតថ្លៃទាំងស្រុង — គ្មានថ្លៃដែលលាក់ ឡើយ
មិនចាំបាច់មានគណនី អ៊ីមែល ឬចូលគណនី
ឯកសារមិនដែលចេញពីឧបករណ៍របស់អ្នក
គ្មានដែនកំណត់ទំហំឯកសារ
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