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Sports Race Timing Stopwatch

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

无需登录
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.

工作原理

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

为什么选择我们的?

完全免费——永远没有隐藏费用
无需账号、邮箱或登录
文件永远不会离开你的设备
绝无文件大小限制
所有输出均无水印

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