Curious about the design behind runsignup.com? SiteFontCheck scanned their live CSS architecture and identified 3 unique font families. The website relies heavily on <roboto, arial, sans-serif> for its main text elements, paired with <-apple-system, blinkmacsystemfont, segoe ui, roboto, oxygen-sans, ubuntu, cantarell, helvetica neue, sans-serif> and <roboto, helvetica neue, helvetica, sans-serif> as fallback options. Below is the precise map of font sizes, weights, and text elements used across their site.