Expo population over time
Hover/tap points or move the time slider to inspect a 15-minute demographic snapshot.
Athletes in expo
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Day peak
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Median dwell
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pickup → outside RFID read
Matched athletes
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registered bibs matched to RFID that day
Audience at selected time
Demographic composition of athletes still inside.
Athletes in expo by home city
Each dot represents one athlete in the expo audience at the selected time, positioned near the center of their registered home city. Richmond Raceway is marked as the expo location.
One dot = one athleteExpo: Richmond Raceway, 600 E Laburnum AveLoading location data…
Average distance traveled to expo
Estimated straight-line miles from each athlete’s city center to Richmond Raceway at 600 E Laburnum Ave, weighted by the audience observed in each 15-minute interval.
—Avg miles at selected time
Loading city-center distance estimates…
Selfie Boards
Unique athlete Selfie Board opt-ins in each 15-minute interval.
Opt-ins in selected—
Post-pickup dwell
Packet check-in to the first subsequent same-day RFID read. RFID time.local values are used exactly as recorded; registration check-in timestamps are aligned to the reader clock before calculating dwell.
—Median min
—Average min
—90th pct min
Dwell-time distribution
5-minute buckets through 59 minutes, then 15-minute buckets through 119 minutes, with 120+ grouped together. Hover bars for counts.
0 min306090120+
Timing & data analysis by