When I did my day tours in the Memphis area, Josh at the Peddler Electric Bike Shop on South Main Street introduced me to a useful Strava feature. I have been a Strava member for several years and long ago upgraded to a premium membership since I liked it so well. I was not aware of the heat map feature.
Heat maps are used to graphically display data as an aid to interpreting it and turning it into actionable information. The idea is simple. Large amounts of data are aggregated and plotted on a graph or a map as in the case of the Strava heat map. The places were the data density is low are shown in a cool color and as the density increases the colors get warmer. The the coolest color of the Strava heat map is blue and the colors get warmer through purple, red, yellow, and white, which is the hottest.
The Strava heat map carries a copyright, so I can’t show screen shots. You can follow along by going to https://www.strava.com/heatmap. To see only bicycle traffic, you need to use the Global Heatmap control panel to select the cycling icon as the Activity Type. You will see a dark outline of the United States with areas of heat map showing the density of bicycle traffic in every corner of the country. You can pan to see other countries and you can zoom to get more detail. The detail goes down to the street level, but only if you are a registered Strava member.
Josh showed the area around Memphis to me. It is clear that most of the bicycle traffic is east of downtown. I was hoping to ride into Mississippi, but Josh explained that there is no easy way to get there and that is indicated in the map. You can see some light activity going north, but the density of the traffic is much lighter.
As you pan toward the east coast, you can pick out the C&O and GAP trails going from Washington DC to Pittsburgh. The sharpness and the whiteness of the heat map trace validates my opinion that the route is one of the best in the country. If you pan up into Canada, you can see the route around Lac St-Jean, the Veloroute de Bleuets. Panning back to the center of the U.S., there are two routes across Iowa that pop out. Surprisingly, neither is the route of RAGBRAI ( The Register’s Annual Great Bicycle Ride Across Iowa).
Of interest to me is the apparent route in Canada that runs from Toronto along the shore of Lake Ontario and along the St. Lawrence to Quebec City. From there the route seems to cross the St. Lawrence and circle the Atlantic Ocean side of the Gaspe Peninsula. I have read about bicycle tours along that route and wondered about the viability. I may be planning a Canada tour this summer.
The Strava heat map is another tool for tour planning. For the Canada tour I would of course supplement the heat map information with detailed route planning, including camping and lodging along the way. The heat map is a good way to get started, identifying the best possibilities by studying the most popular choices of other cyclists.