Historic Routes
1) Ketcham, Rich. (2014). RAGBRAI Events. Retrieved from http://www.geobike.com/geobike/gbdomain.shtml [October 27th, 2014].
Elevation and Slope Data for the State of Iowa
2) Iowa Department of Natural Resources. (1991). National Elevation Dataset of Iowa as a 30 meter Integer GRID, Vertically Attributed in feet. Retrived from ftp://ftp.igsb.uiowa.edu/GIS_Library/IA_state/Elevation/NED/NED_30m/NED_ft_I_30m/ned_ft_i.zip [November 18th, 2014]
3) Iowa Department of Natural Resources. (Unknown). Percent Slope Model of Iowa, as represented by a 30 Meter Integer GRID. Retrieved from ftp://ftp.igsb.uiowa.edu/GIS_Library/IA_State/Elevation/NED/NED_30m/pcnt_slope_i/pcnt_slope_i.zip. [November 18th, 2014]
OpenStreetMap
4) openstreetmap.com and contributors. (2014). OpenStreetMap Retrieved from http://download.geofabrik.de/north-america/us/iowa-latest.shp.zip [November 10th, 2014]
Example GPX
5) themiller7. (2010). Ragbrai - Day 7. Retrieved from http://connect.garmin.com/page/activity/activity.faces; jsessionid=A32F328786837FEB6258AD474A484F1A?activityId=42845966&actionMethod=page%2Factivity%2Factivity.xhtml%3AuserSwitcher.switchSystem&cid=317132# [December 1st, 2014]
Weather Map
6) National Oceanic and Atmospheric Association. (1970). RADAR data provided by the National Climatic Data Center, Web site at http://www.ncdc.noaa.gov/. Retrieved via Next Generation RADAR, Level III--Long-Range Base Reflectivity. RAGBRAI - Day 4. 21:06-24:00 UTC Station KDMX: Des Moines, IA. Source: https://www.ncdc.noaa.gov/data-access/radar-data. [November 20th, 2014].