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Sunrayce 99 continued in a similar format as previous events and continued to be sponsored by General Motors and the Department of Energy. It would be the last Sunrayce before the rebrand and restructure of the events. The events was limited by weather conditions, with all teams having to trailer for part of the route.
Route
The Sunrayce 99 event was one day longer than the previous two events, 10 total days including a rest day. Each day was a single stage, all but the first and last including a midday checkpoint. The event traveled over 1400 miles from Washington, DC to Orlando, Florida.
- June 20: Washington, DC to Charlottesville, VA (115.56 miles)
- June 21: Charlottesville, VA to Keysville, VA to Raleigh, NC (198.06 miles)
- June 22: Raleigh, NC to Rockingham, NC to Charlotte, NC (180.70 miles)
- June 23: Charlotte, NC to Spartanburg, SC to Clemson, SC (149.46 miles)
- June 24: Clemson, SC to Gainesville, GA to Atlanta, GA (134.22 miles)
- June 25: Rest Day
- June 26: Atlanta, GA to Madison, Ga to Macon, GA (164.82 miles)
- June 27: Macon, GA to Sylvester, GA to Tallahassee, FL (199.01 miles)
- June 28: Tallahassee, FL to Lake City, FL to Ocala, FL (199.80 miles)
- June 29: Ocala, FL to Orlando, FL (82.22 miles)
Results
Sunrayce 99 teams were ranked by total elapsed time to complete the route. Trailering penalties (which all teams received) as included in the elapsed time.
| Rank | Team # | Team Name | Total Elapsed Time (HH:MM:SS) | Average Speed (mph) |
|---|---|---|---|---|
| 1 | 42 | University of Missouri – Rolla | 56:16:44 | 25.30 |
| 2 | 100 | Queen’s University | 27:04:02 | 24.95 |
| 3 | 74 | Rose-Hulman Institute of Technology | 64:08:10 | 22.20 |
| 4 | 35 | University of Minnesota | 64:24:13 | 22.11 |
| 5 | 9 | Iowa State University | 65:28:13 | 21.75 |
| 6 | 43 | University of Missouri | 66:00:13 | 21.57 |
| 7 | 77 | Messiah College | 69:43:06 | 20.42 |
| 8 | 101 | École de technologie supérieure | 70:03:58 | 20.32 |
| 9 | 11 | Kansas State University | 70:23:48 | 20.23 |
| 10 | 24 | University of Waterloo | 72:42:15 | 19.58 |
| 11 | 33 | Ohio State University | 74:50:57 | 19.02 |
| 12 | 17 | University of Pennsylvania | 75:33:21 | 18.84 |
| 13 | 16 | Stanford University / University of California, Berkeley | 77:27:20 | 18.38 |
| 14 | 4 | Clarkson University | 78:44:03 | 18.08 |
| 15 | 7 | Yale University | 78:59:32 | 18.03 |
| 16 | 31 | University of Oklahoma | 79:17:27 | 17.96 |
| 17 | 2 | University of Michigan | 79:28:39 | 17.92 |
| 18 | 00 | University of North Dakota | 81:02:42 | 17.57 |
| 19 | 3 | Minnesota State University, Mankato and Winona | 82:23:12 | 17.28 |
| 20 | 98 | University of Toronto | 82:44:18 | 17.21 |
| 21 | 14 | Lincoln Land Community College | 83:28:48 | 17.06 |
| 22 | 314 | Purdue University | 84:05:37 | 16.93 |
| 23 | 454 | Western Michigan University | 85:10:50 | 16.72 |
| 24 | 8 | University of Arizona | 86:20:44 | 16.49 |
| 25 | 777 | South Dakota School of Mines & Technology | 89:39:23 | 15.88 |
| 26 | 32 | Principia College | 94:20:48 | 15.09 |
| 27 | 87 | University of Virginia | 97:58:13 | 14.53 |
| 28 | 21 | New Mexico Institute of Mining & Technology | 97:58:39 | 14.53 |
| 29 | 762 | United States Military Academy | 100:32:49 | 14.16 |