Design every lane with clear, field-ready dimensions. See lap totals, radii, and stagger distances instantly. Download CSV or PDF for staking and verification on-site.
Example assumes: inside radius 36.50 m, straight 84.39 m, lane width 1.22 m, measurement offset 0.30 m, 8 lanes.
| Lane | Measurement Radius (m) | Lap Length (m) | Extra Lap vs Lane 1 (m) |
|---|---|---|---|
| 1 | 36.800 | 400.001 | 0.000 |
| 2 | 38.020 | 407.667 | 7.665 |
| 3 | 39.240 | 415.332 | 15.331 |
| 4 | 40.460 | 422.998 | 22.996 |
| 5 | 41.680 | 430.663 | 30.662 |
| 6 | 42.900 | 438.329 | 38.327 |
| 7 | 44.120 | 445.994 | 45.993 |
| 8 | 45.340 | 453.660 | 53.658 |
Track layout begins with three measurable dimensions: inside radius, straight length, and lane width. The calculator converts your chosen units and builds the lane measurement radius by adding width increments and the selected offset. Small entry errors compound around the curves, so verify as-built radii and straight chord measurements before painting or paving.
Race distances are measured along a line inside each lane, not on the curb. Many projects use a 0.30 m offset for lane one and a slightly smaller offset for outer lanes, depending on specifications. Selecting the correct offset helps align staggers, exchange zones, and finish lines with governing requirements and inspection checks.
For an oval, total lap length equals two straights plus the equivalent of a full circle formed by both semicircles. Because straights remain constant for every lane, extra distance is created only by the larger curve radius. The calculator reports full-lap differences and a half-lap estimate that supports common stagger layouts for 200 m style starts.
Beyond line setting, crews often need quick quantity checks for surfacing and striping. The lane area estimate multiplies lane width by lane lap length, producing a practical approximation for resin, asphalt, and coating takeoffs. Summing across all lanes provides a total running surface area that supports budgeting, procurement, and waste allowances.
Use results as a verification sheet during staking and marking. Confirm the selected lane radius at several stations, then compare calculated lap length against required event distances. Exporting CSV supports shop drawings and handover packages, while the PDF snapshot is useful for site supervisors, client signoff, and audit trails. When auto-fit is enabled, treat the computed inside radius as a design target and confirm feasibility with drainage, kerb details, and safety zones. If constraints force changes, rerun the calculator and update marking drawings immediately on site.
Lap length is calculated along the measurement line for the selected lane, using your inside radius, lane width, and offset. It is not the curb length and will differ from edge-based measurements.
Outer lanes have a larger curve radius, so athletes run farther on the bends. Staggers shift the start so each lane covers the same event distance when measured along the proper line.
Use the offset specified in your project standards or federation guidance. If unknown, start with 0.30 m for lane one and 0.20 m for lanes two and above, then confirm with the designer.
Yes. Enter the straight length and enable auto-fit with a 400 m target lap. The tool solves for an inside radius that achieves the target for lane one at the chosen offset.
Areas are practical estimates based on lane width times lap length. They support material takeoffs and budgeting, but final quantities should follow detailed drawings, tapers, and site measurement.
Downloads capture the latest calculation inputs and outputs, including radii, lap lengths, stagger differences, and area estimates. They help share assumptions with survey, paving, and marking teams.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.