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[01]What Is a Lane Violation?

Lane violations, explained

What counts

In a lane race, you must keep both feet inside your lane. Stepping on the line, or over it, especially the inside line or for several steps, is a violation. A single brief touch with no advantage is sometimes judged leniently.

Where it applies

Lane discipline applies to races run entirely in lanes, like the 100, 200, and 400, and the early part of races that break for the inside. Once a race breaks to the curb, runners may leave their lanes.

When it is a DQ

Stepping inside the line on the curve, or gaining an advantage or impeding another runner, draws a disqualification. The officials judge intent and advantage, but the safe rule is simple: stay in your lane.

Run your lane

Run a clean, fast curve in your lane

Drifting onto the line usually means a poor curve. Film a rep, the AI grades your lean and curve mechanics so you hold your lane and carry more speed through the bend.

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Sprinter driving out of the blocks, frame analyzed by Track & Field AI (lane violation)
Sprints · Sample analysis “Hip rise on step 3 is too early. Staying in the drive position one step longer would add ~0.08s over the first 20m.”
[02]The line

Keep both feet inside the lane

Staying inside your lane is legal. Stepping on or over the line, especially the inside line on the curve, is a violation.

A lane violationStepping on or over the lane line in a lane race is a violation that can lead to disqualification. inside the lane: legal on the line: a violation
Lane discipline applies to races run in lanes. Stepping on the inside line can draw a disqualification.
[10]Common questions

What Is a Lane Violation? FAQ

Common questions athletes and coaches ask about this topic.

What is a lane violation in track?
Stepping on or over your assigned lane line in a race that requires staying in lanes, which can lead to disqualification.
Is stepping on the line always a DQ?
Not always. Stepping inside the line on the curve or gaining an advantage draws a DQ; a brief touch with no advantage is sometimes judged leniently.
Which races require staying in your lane?
Lane races like the 100, 200, and 400, plus the early part of races that break for the inside. After the break, runners may leave their lanes.
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