Shoe Data Methodology
How Cadence collects, checks, standardizes, and presents running-shoe information.
Last updated: July 14, 2026
Cadence maintains a structured running-shoe database designed to make specifications easier to understand and compare. This page explains how the information is collected and where limitations may exist.
Primary data sources
Shoe information may be researched using:
- Official manufacturer product pages
- Manufacturer press releases and technical materials
- Established running-specialty retailers
- Product packaging or documentation when available
- Direct observation or personal testing when applicable
Cadence does not assume that every third-party listing is correct. When practical, important specifications are checked against more than one source.
Standardizing specifications
Brands and retailers sometimes report measurements in different formats. Cadence standardizes commonly compared fields so users can view shoes side by side.
- Stack height is displayed in millimeters
- Midsole drop is displayed in millimeters
- Weight is generally displayed in ounces
- Prices are generally displayed in United States dollars
- Plate, foam, stability, cushioning, and fit fields are grouped into consistent categories
Shoe weight
Shoe weight can differ by size, sex-specific version, production variation, and measurement method. Cadence generally uses a commonly published sample weight when one is available. The displayed number should be treated as a comparison reference rather than a guarantee that every size or pair weighs exactly the same.
Stack height and drop
Reported stack heights may differ depending on whether an outsole, sockliner, or other component is included in the measurement. Manufacturer-listed measurements may also differ from independent laboratory measurements.
When sources disagree, Cadence considers the manufacturer’s current published specifications, the credibility of alternative sources, and whether one source clearly describes a different measurement method.
Categories and descriptive fields
Fields such as cushioning level, stability, fit, intended use, and shoe category are not always universal manufacturer specifications. Cadence may classify these fields to make the database easier to filter and compare.
These classifications reflect editorial judgment and are intended as practical guidance, not medical or biomechanical diagnoses.
Personally tested versus research-based entries
Not every shoe in the Cadence database has been personally tested. Database pages may combine verified factual specifications with research-based descriptions and editorial comparison.
When an article contains personal testing impressions, that experience should be stated clearly. The phrase “compiled by” or an author credit does not by itself mean the author personally ran in the shoe.
Prices and availability
Prices and availability can change without notice. Cadence may show a manufacturer’s suggested price or a recently observed retail price, but users should confirm the current price and availability with the retailer before purchasing.
Update and correction process
The database is updated as new models are released, specifications change, or errors are discovered. Older models may remain available in the archived-shoe section for historical comparison.
To report a possible data error, email info.runcadence@gmail.com and include the shoe name, the field in question, and a supporting source when possible.
Editorial standards
More information about authorship, independence, affiliate links, corrections, and editorial decision-making is available in the Cadence Editorial Policy.