Coverage analysis
What 30 minutes cycling covers in San Jose.
Bay-bounded and mountain-walled, San Jose isochrones are wide open along US-101 north and south but collapse sharply against the bay marshes to the north and the Santa Cruz Mountains to the west.
At 30 minutes by bike, the San Jose cycling isochrone captures the city-wide cycling catchment — a zone where cycling trips are purposeful — riders cross neighbourhood boundaries for specific destinations. Unlike a flat radius circle, the real cycling-network polygon follows San Jose's actual bike lanes, greenways, and low-traffic streets — reaching further along protected corridors while contracting where motorways, rail yards, and rivers lack cycle crossings.
Coverage area at 30 minutes cycling: ≈ 30–60 km². Common applications for this zone include bike-share service area design, brewery and urban recreation catchment analysis, bike shop trade area planning.
The city-level population of 1,013,240 and a median household income of $117,000 give a sense of San Jose's economic density, but the figure that matters for cycling catchment analysis is the population inside the polygon — not the city as a whole. That number shifts significantly depending on whether your origin is in a dense urban core or a lower-density suburban corridor. Use the tool above to set your actual candidate location, then generate the isochrone to see the real cycling catchment.