These represent entrants in our master registration database. Recently received entries, including online entries, may not yet be posted. Note:Chip numbers are included only for chip owners. If you plan to run with your own chip, be sure that the correct chip number i s listed here. Please report any errors to the Twilighter Registrar
| Bib # | Race | Chip ID | Name | Sex | Age | Hometown | |
| 501 | R | DN7M0MZ | D' Andrea, Michael | M | 22 | Olney MD | |
| 1246 | R | DN0DGZW | D'alessio, David | M | 15 | Darnestown MD | |
| 1265 | R | CC89663 | D'souza, Ravi | M | 24 | Gaithersburg MD | |
| 887 | R | DN3MTFP | Dacosta-Warshau, Kris | F | 38 | Germantown MD | |
| 786 | R | CB80888 | Dalin, Russell | M | 35 | Gaithersburg MD | |
| 1355 | R | CH28845 | Dandrea, Joseph | M | 18 | Olney MD | |
| 546 | R | CB21734 | Daniels, Andrew | M | 25 | Silver Spring MD | |
| 1200 | R | DN0AT4H | Daniels, Bill | M | 56 | Chevy Chase MD | |
| 548 | R | CF24081 | Daniels, Andrew | M | 25 | Chevy Chase MD | |
| 445 | R | DX4G3RE | Dantus, Adam | M | 17 | Rockville MD | |
| 1862 | R | BC36743 | Danzeisen, Eric | M | 25 | Alexandria VA | |
| 1766 | R | CG99457 | Darchuk, Emily | F | 18 | Monrovia MD | |
| 485 | R | DF38SAK | Dasilva, James | M | 21 | Stratford CT | |
| 1027 | R | DN2ZDMH | Dassing, Paula | F | 44 | Olney MD | |
| 201 | R | CG21977 | Daugherty, Jonathan | M | 25 | Washington DC | |
| 1839 | R | CB98510 | David, Brewer | M | 50 | Herndon VA | |
| 922 | R | DN0PM4Z | Davis, Gary | M | 40 | Germantown MD | |
| 519 | R | DX3VK0W | Davis, Hillary | F | 24 | Rockville MD | |
| 458 | R | DF9XCMT | Davis, Pamela | F | 18 | Falls Church VA | |
| 1150 | R | DN3ZMHF | Davis, Peggy | F | 52 | Falls Church VA | |
| 1226 | R | CE08417 | Davis, Gorman | M | 63 | Baltimore MD | |
| 1840 | R | DN71N0E | Davis, Sandra | F | 50 | Rockville MD | |
| 1774 | R | DA4MWB4 | Davis, Jessica | F | 21 | Rockville MD | |
| 1424 | R | DA4CE4R | Dawson, Stacy | F | 29 | Washington DC | |
| 1782 | R | DA6670W | De Leon, Monica | F | 25 | Columbia MD | |
| 405 | R | CB15254 | Decker, Ann Marie | F | 13 | Gaithersburg MD | |
| 426 | R | DX66MH5 | Decker, Gregory | M | 15 | Gaithersburg MD | |
| 1907 | R | CH25954 | Decrick, Michael | M | 40 | Montgomery Vill MD | |
| 1975 | R | DA9HP48 | Defrees, Monique | F | 37 | Rockville MD | |
| 1294 | R | DX8BEVG | Del Pozzo, Dominic | M | 35 | Rockville MD | |
| 1927 | R | CE18800 | Delgado, Mauricio | M | 48 | Gaithersburg MD | |
| 280 | R | CH13286 | Deluca, Frank | M | 55 | Vienna VA | |
| 1939 | R | DA66SCT | Demarco, Adam | M | 14 | Fruitland Park FL | |
| 624 | R | DX8XRFW | Denardo, Christy | F | 28 | Alexandria VA | |
| 622 | R | DA9220S | Dengler, Kathryn | F | 28 | Olney MD | |
| 1804 | R | DF5GR1K | Denig, Chris | M | 34 | Bethesda MD | |
| 1856 | R | CA99365 | Denison, Niki | F | 18 | Severn MD | |
| 1852 | R | DX5FZMS | Denison, Desi | F | 17 | Severn MD | |
| 469 | R | CE94133 | Depman, Colleen | F | 19 | Crofton MD | |
| 1461 | R | CD46769 | Derrenbacher, Donald | M | 34 | Gaithersburg MD | |
| 1438 | R | DX3XVN8 | Desantis, Brian | M | 31 | Silver Spring MD | |
| 743 | R | CD60727 | Dexter, Carroll | M | 33 | Silver Spring MD | |
| 1990 | R | DX0VS7C | Dickerson, Darryl | M | 41 | Pikesville MD | |
| 1737 | R | DA9216A | Dickey, Keith | M | 34 | Olney MD | |
| 504 | R | CH20458 | Dieterich, Amy | F | 23 | Washington DC | |
| 1008 | R | CA30119 | Dietz, Laura | F | 43 | Gaithersburg MD | |
| 1077 | R | CF89595 | Dietz, Ron | M | 47 | Gaithersburg MD | |
| 954 | R | CG17761 | Difonzo, Dan | M | 41 | Rockville MD | |
| 550 | R | CF14814 | Dofflemyer, Brian | M | 25 | Alexandria VA | |
| 1323 | R | CF35262 | Doherty, Steven | M | 44 | Rockville MD | |
| 1256 | R | CD29985 | Domanski, Adam | M | 21 | Potomac MD | |
| 1837 | R | DX6TMGB | Donahue, Joseph | M | 49 | Vienna VA | |
| 512 | R | CF04796 | Donaldson, Patrick | M | 24 | Arlington VA | |
| 106 | R | DF9RGY3 | Donovan, Sharon | F | 29 | Washington DC | |
| 1916 | R | DN6SRA8 | Double, Kathleen | F | 42 | Mount Airy MD | |
| 1 | R | DX38TPD | Dowling, Keith | M | 35 | Reson VA | |
| 540 | R | CF72396 | Doyle, Melanie | F | 25 | Arlington VA | |
| 892 | R | DF3DVBR | Droll, Timothy | M | 38 | Washington DC | |
| 1020 | R | DA440RZ | Drosky, Mark | M | 43 | Alexandria VA | |
| 279 | R | CG32764 | Duboff, Beth | F | 53 | Mclean VA | |
| 560 | R | CB22985 | Duffy, Margaret | F | 26 | Washington DC | |
| 1732 | R | DN7AH7K | Dugan, Peter | M | 28 | Arnold MD | |
| 250 | R | BC71781 | Dugdale, Tracey | F | 44 | Reston VA | |
| 1091 | R | DX8SENB | Duggan, Dan | M | 47 | Rockville MD | |
| 1367 | R | DA7RRHY | Duncan, Andrew | M | 21 | Rockville MD | |
| 1595 | R | CD32342 | Dunham, Thomas | M | 58 | Germantown MD | |
| 1332 | R | CD28169 | Dunlop, Douglas | M | 50 | Potomac MD | |
| 1252 | R | CE69344 | Dunlop, Brian | M | 18 | Potomac MD | |
| 1255 | R | CA43900 | Dunlop, Erin | F | 20 | Potomac MD | |
| 1710 | R | CC76007 | Dunn, John | M | 51 | Falls Church VA | |
| 1169 | R | DA4NWXR | Dunne, Loretta | F | 53 | Woodbury NJ | |
| 901 | R | CF47599 | Durbin, Paul | M | 39 | Arlington VA | |
| 1820 | R | CF64607 | Durbin, Paul | M | 39 | Arlington VA | |
| 1917 | R | CH57118 | Durkin, Anthony | M | 42 | Germantown MD | |
| 672 | R | CD74709 | Durrence, Jennifer | F | 30 | Bethesda MD | |
| 1405 | R | CA85701 | Dusenbery, Michael | M | 26 | Savage MD | |
| 1014 | R | DN3GKFB | Dutton, David | M | 43 | Columbia MD | |
| 1797 | R | CH45623 | Dutton, Jeffrey | M | 31 | Washington DC | |
| 1779 | R | CF93032 | Dypsky, Crystal | F | 23 | Gaithersburg MD | |
| 1192 | R | DN0B80F | Dyson, Lawrence | M | 55 | Silver Spring MD |