Retail chains continually expand, reconfigure, and contract their store networks to serve their customers and maximize profits. One notable consequence of these actions is changes in the distances between consumers’ residences andnearest stores, altering their transportation-related CO2 emissions. Therefore, this study aims to examine the environmental impact of the reconfiguration of the IKEA store network in Sweden during the twenty-first century and compare the actual reconfiguration to one that minimizes consumers’ travel distances and, thus, CO2emissions. The expansion of the IKEA network in Sweden between 2004 and 2016, adding four (2004–2007) and then three (2013–2016) additional stores, reduced consumers’ average travel distance to their nearest store from 87 to 65.2 km. However, had IKEA managers used our web-available decision support tool,eCOmpass, this reduction could have been achieved after the first round of store additions since the distance-minimizing locations for the four new stores established in 2004–2007 would have reduced average travel distance to 64.9 km.