GTFS Map Viewer
Open any GTFS feed and instantly visualize the entire transit network on an interactive map. Overlay custom GeoJSON or KML boundaries, explore routes and stops spatially, and understand how transit coverage aligns with the geography of your region.
Open TransitLens AppVisualize Transit Networks from GTFS
A GTFS feed contains the geographic and structural data that defines a transit network — routes, stops, shapes, and their relationships. But this data is stored as rows of coordinates and IDs across multiple CSV files, making it difficult to interpret without visualization.
A GTFS map viewer solves this by plotting the data on an interactive map, letting you see the spatial layout of a transit system at a glance. With a map-based view, you can examine:
- Transit routes drawn across the network using their geographic paths
- Stop locations plotted at their real-world coordinates
- Shapes and route paths rendered from
shapes.txtgeometry - Relationships between routes and the service areas they cover
Rather than cross-referencing tables like routes.txt, stops.txt, and shapes.txt manually, a map viewer turns raw GTFS data into an understandable geographic picture. For a detailed walkthrough of the GTFS file structure, see the How to Read GTFS Data guide.
Explore Routes and Stops on an Interactive Map
TransitLens displays GTFS data on a fully interactive map that you can pan, zoom, and explore. Routes are rendered as colored lines following their actual geographic paths, and stops appear as markers at their real-world positions.
The map view provides several capabilities for exploring transit data:
- Pan and zoom to navigate across the transit network at any scale
- Routes rendered visually with distinct colors for each line
- Stops displayed geographically with location details on click
- Filter routes by name or type to inspect specific lines
- Hover and click interactions to reveal route and stop metadata
- View route paths alongside the stops they serve
Whether you are inspecting a single corridor or surveying an entire regional network, the interactive map gives you spatial context that raw data files cannot provide.
Beyond the map, TransitLens also provides sortable data tables for routes and stops — useful when you need to search or inspect records without scrolling the map. The GTFS Viewer page covers the full range of data exploration capabilities including tables and calendar analysis.
Understand the Structure of a Transit Network
Viewing GTFS data on a map reveals patterns and relationships that are invisible in tabular form. A geographic view helps you move from individual data points to a structural understanding of how a transit network is organized.
By visualizing GTFS feeds on a map, you can:
- Identify network coverage and see which areas are served by transit
- Detect overlapping routes that share corridors or duplicate service
- Understand service corridors and how routes connect key destinations
- Explore the overall transit network structure and its geographic reach
These spatial insights are valuable for transit planners evaluating network design, analysts comparing service levels across regions, and developers building applications that depend on understanding transit geography. For more on how routes, trips, and stops relate to each other, see the GTFS Routes, Trips, and Stops Explained guide.
Overlay Custom Boundaries with GeoJSON and KML
TransitLens lets you import GeoJSON and KML polygon files and overlay them directly on top of your GTFS data. This turns the map into a spatial analysis workspace — useful whenever you need to understand transit coverage in relation to real geographic boundaries.
- Import service area polygons from GeoJSON to evaluate how well the network covers a region
- Load KML boundary files exported from Google Earth or other planning tools
- View transit routes and stops in the context of municipal, district, or administrative boundaries
- Identify coverage gaps where service areas do not align with the boundaries that matter
- Combine polygon overlays with route filtering to focus analysis on specific corridors or zones
Polygon import is especially valuable for service planning, QA reviews, and equity analysis — any workflow where transit geography needs to be evaluated against defined zones or areas. The GTFS Viewer also supports polygon import alongside data tables and calendar analysis.
How to View a GTFS Feed on a Map
Getting started with TransitLens as a GTFS map viewer takes less than a minute. Follow these four steps to go from a raw GTFS file to a fully interactive map.
Download a GTFS feed
Get a GTFS ZIP file from a transit agency or an open data portal.
Open TransitLens
Navigate to the TransitLens app in your browser. No installation needed.
Import the feed
Drop your GTFS file into TransitLens. It processes everything locally.
Explore routes and stops on the map
Browse the transit network, click on routes and stops, and explore the map interactively.
For a detailed walkthrough of all TransitLens features, see the Quick Start Guide.
Why Use TransitLens as a GTFS Map Viewer
Instant visualization of GTFS feeds
Import a GTFS file and see the entire transit network rendered on a map in seconds.
Interactive exploration of transit networks
Pan, zoom, and click through routes and stops to understand network geography.
Clear route and stop mapping
Routes drawn with geographic paths and stops plotted at real-world coordinates.
Built for transit planners, analysts, and developers
Designed for professionals who work with GTFS data and need geographic context.
Custom GeoJSON and KML overlays
Import boundary files to overlay zones, districts, and service areas directly on your transit map.
You can also explore GTFS feeds beyond the map view. The GTFS Viewer page covers the full range of data exploration capabilities in TransitLens — including data tables and calendar analysis.
Explore a GTFS dataset on the map
Open TransitLens, import a GTFS feed, and see your transit network displayed on an interactive map. Free, fast, and browser-based.
Open the TransitLens App