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 | |
| 1045 | R | DA3C6EZ | Babcock, Kevin | M | 45 | Poolesville MD | |
| 1312 | R | CA64113 | Backenstoe, Gerald | M | 41 | Bethesda MD | |
| 747 | R | BC88550 | Baetcke, Philip | M | 33 | Falls Church VA | |
| 567 | R | CD62814 | Bahn, Ali | F | 26 | Silver Spring MD | |
| 1210 | R | BC78430 | Bahn, Henry | M | 57 | Silver Spring MD | |
| 1068 | R | BC16775 | Bailey, Patrizia | F | 46 | Washington DC | |
| 113 | R | CH60303 | Bailey, Mary Kate | F | 25 | Unknown AA | |
| 606 | R | CD86370 | Bain, Christopher | M | 27 | Bethesda MD | |
| 997 | R | DX5W7S7 | Bain, Adam | M | 42 | Washington DC | |
| 1663 | R | DA4EXN5 | Bain, Quynh | F | 37 | Washington DC | |
| 468 | R | DX2W7HT | Bainbridge, Alexandra | F | 19 | Germantown MD | |
| 495 | R | DF364VY | Bainbridge, Andrea | F | 22 | Germantown MD | |
| 1867 | R | CD27473 | Bair, Cynthia | F | 26 | Washington DC | |
| 659 | R | CF83606 | Baker, Rachel | F | 30 | Springfield VA | |
| 700 | R | DF33FDN | Baker, John | M | 32 | Springfield VA | |
| 609 | R | DN0W31Y | Baker, Julie | F | 27 | Alexandria VA | |
| 1581 | R | DX3TNRA | Baker, Ronald | M | 53 | Gaithersburg MD | |
| 1327 | R | DN3G1KP | Balaban, Vladislav | M | 47 | Frederick MD | |
| 1041 | R | CD25974 | Balinas, Joe | M | 45 | Rockville MD | |
| 515 | R | DN8CPX3 | Ballard, Tucker | F | 24 | Baltimore MD | |
| 1267 | R | BC51325 | Ballard, Kimberly | F | 26 | Kensington MD | |
| 1995 | R | BC88735 | Banda, Hector | M | 42 | Gaithersburg MD | |
| 566 | R | DN53F5X | Banfield, Charity | F | 26 | Washington DC | |
| 583 | R | DN9WD0B | Banks, Liz | F | 26 | Arlington VA | |
| 1884 | R | CH35925 | Banks, Terrence | M | 32 | Frederick MD | |
| 613 | R | DA9P28E | Barker, Laura | F | 28 | Arlington VA | |
| 1897 | R | DA9WM1Z | Barnes, Therese | F | 36 | South Riding VA | |
| 1886 | R | CF75280 | Barnes, Rob | M | 32 | South Riding VA | |
| 963 | R | CD64309 | Barney, Stephen | M | 41 | Rockville MD | |
| 1434 | R | BC85901 | Barrionuevo, Natalia | F | 30 | North Bethesda MD | |
| 860 | R | BC33283 | Barry, Cecilia | F | 37 | Arlington VA | |
| 1104 | R | CF76046 | Bartkow, John | M | 48 | Rockville MD | |
| 681 | R | CF81709 | Bartlett, Kate | F | 30 | Rockville MD | |
| 511 | R | DX7329E | Barton, Amanda | F | 24 | Washington DC | |
| 298 | R | DN17T72 | Bartoshesky, Mandy | F | 29 | Washington DC | |
| 908 | R | DF5WV3A | Bass, Glenn | M | 39 | Silver Spring MD | |
| 3109 | F | Bass Jr, Glenn | M | 13 | Silver Spring MD | ||
| 1635 | R | BC07742 | Bassett, Marisa | F | 24 | Washington DC | |
| 295 | R | CB67118 | Bateman, Guy | M | 68 | Derwood MD | |
| 902 | R | CF77715 | Batts, Theresa | F | 39 | Bel Air MD | |
| 222 | R | DF73CXC | Bauer, John | M | 36 | Arlington VA | |
| 214 | R | DA19D52 | Bauer, Laurel | F | 33 | Arlington VA | |
| 1353 | R | CA58384 | Bauer, Josh | M | 18 | Rockville MD | |
| 18 | R | BC30146 | Bauer, Dustin | M | 18 | Timonium MD | |
| 701 | R | CG16147 | Bauman, Scott | M | 32 | Laurel MD | |
| 409 | R | CD36922 | Baxter, Samuel | M | 14 | Rockville MD | |
| 771 | R | CF45772 | Bayers, Jeanne | F | 34 | Arlington VA | |
| 1067 | R | DX5WZRZ | Bean, John | M | 46 | Washington DC | |
| 811 | R | CG99663 | Bean, Karen | F | 35 | Arlington VA | |
| 1471 | R | CA60571 | Beard, Michelle | F | 35 | Montgomery Vill MD | |
| 3118 | F | Beard, Jacob | M | 4 | Montgomery Vill MD | ||
| 1887 | R | CF22190 | Beardsley, Joshua | M | 32 | South Riding VA | |
| 1759 | R | CC74920 | Behan, Bill | M | 52 | Ridgewood NJ | |
| 2013 | R | DF0Y8S6 | Behan, George | M | 50 | Silver Spring MD | |
| 465 | R | DN3P045 | Bell, Maddie | F | 19 | Gaithersburg MD | |
| 408 | R | DA2ZN23 | Bell, Hillary | F | 14 | Gaithersburg MD | |
| 444 | R | DF5Y6Y8 | Bell, Emily | F | 17 | Gaithersburg MD | |
| 655 | R | CG99441 | Bender, Dana | F | 29 | Alexandria VA | |
| 517 | R | DN0T2GC | Benjamin, Hannah | F | 24 | Germantown MD | |
| 1534 | R | CA62392 | Benjamin, Michael | M | 43 | Lanham MD | |
| 1540 | R | DN049K6 | Benko, William | M | 43 | Woodbridge VA | |
| 1750 | R | DF68SWM | Bennet, Carri | F | 42 | Bethesda MD | |
| 1751 | R | CB10789 | Bennet, Michael | M | 43 | Bethesda MD | |
| 1173 | R | CF24503 | Berbakos, Patrick | M | 53 | Olney MD | |
| 1130 | R | DX9GB69 | Berbakos, Kathy | F | 50 | Olney MD | |
| 1621 | R | DX77TCY | Berbert, Matt | M | 19 | Germantown MD | |
| 1231 | R | CA47323 | Berdahl, Anna | F | 65 | Silver Spring MD | |
| 1946 | R | BC93062 | Berey, Lisa | F | 26 | Bethesda MD | |
| 572 | R | CD44080 | Bergantine, Suzanne | F | 26 | Silver Spring MD | |
| 1244 | R | CF61332 | Berhe, Robel | M | 13 | Silver Spring MD | |
| 970 | R | DN0XMTN | Bernier, Cathy | F | 42 | Rockville MD | |
| 851 | R | CD55903 | Bernier, Marie | F | 36 | Rockville MD | |
| 1138 | R | DF364DC | Bernstein, Lainey | F | 51 | Potomac MD | |
| 1154 | R | CB80188 | Bernstein, Ben | M | 52 | Silver Spring MD | |
| 1545 | R | DF5F81R | Berry, Carolyn | F | 44 | Washington DC | |
| 1539 | R | CH48022 | Berry, Catherine | F | 43 | Woodbridge VA | |
| 1873 | R | DX4Y9RN | Best, Jennifer | F | 28 | Hagerstown MD | |
| 1308 | R | DX12F8Y | Betz, Russell | M | 39 | Alexandria VA | |
| 2000 | R | CE63795 | Betz, Jean | F | 45 | Cabin John MD | |
| 108 | R | DA34N69 | Beven, Helen | F | 39 | Kensington MD | |
| 935 | R | CD46189 | Beveridge, Michael | M | 40 | Bethesda MD | |
| 1525 | R | CH29248 | Bevis, Gwen | F | 42 | Washington DC | |
| 2001 | R | CF13021 | Biegel, Joe | M | 45 | Cabin John MD | |
| 1083 | R | DX2KN0N | Biordine, Don | M | 47 | Rockville MD | |
| 843 | R | DN03E33 | Bisbey, Samuel | M | 36 | Potomac MD | |
| 286 | R | DF06WPN | Bitgood, Jim | M | 58 | Laurel MD | |
| 1570 | R | CG09217 | Black, Ronald | M | 49 | Frederick MD | |
| 1546 | R | DX4B0ZE | Black, Beverly | F | 44 | Frederick MD | |
| 448 | R | DX59G5G | Blair, Leslie | F | 17 | Seabrook MD | |
| 3106 | F | Blake, Elise | F | 10 | Silver Spring MD | ||
| 3112 | F | Blake Bass, Felecia | F | 40 | Silver Spring MD | ||
| 151 | R | DN702YH | Blank, Betty | F | 51 | Falls Church VA | |
| 1974 | R | CE32242 | Bleich, Mark | M | 37 | Montgomery Vill MD | |
| 713 | R | DF0TAM7 | Blessing, Cathy | F | 32 | Sterling VA | |
| 708 | R | CF69198 | Blot, Bill | M | 32 | Arlington VA | |
| 283 | R | CG89463 | Boice, Peter | M | 57 | Rockville MD | |
| 1594 | R | DA9P6NR | Bokansky, Richard | M | 58 | New Market MD | |
| 877 | R | DX5N21K | Bolger, Catherine | F | 38 | Fairfax VA | |
| 1206 | R | DA230W7 | Bolin, Eric | M | 57 | Rockville MD | |
| 1778 | R | CH57811 | Bolles, Meghan | F | 23 | Silver Spring MD | |
| 1370 | R | CC67929 | Bollwerk, Elizabeth | F | 21 | Bethesda MD | |
| 15 | R | CD36401 | Bonner, Brennan | M | 19 | Baltimore MD | |
| 1166 | R | DN97PDB | Bonney, David | M | 53 | Owings MD | |
| 2018 | R | CE32062 | Borenstein, David | M | 57 | Potomac MD | |
| 1656 | R | CC90446 | Borneo, Gregory | M | 34 | Bethesda MD | |
| 960 | R | CD38767 | Borst, Alan | M | 41 | Brookeville MD | |
| 673 | R | DA6XPCA | Botwick, Dana | F | 30 | Arlington VA | |
| 950 | R | DX88VE8 | Boufraine, Laila | F | 41 | Bethesda MD | |
| 710 | R | DF8T091 | Bove, Christopher | M | 32 | Alexandria VA | |
| 1447 | R | CF20492 | Bove, Andrew | M | 32 | Washington DC | |
| 434 | R | DF1RH58 | Boyer, Brandon | M | 15 | Myersville MD | |
| 968 | R | DA955XT | Boyle, Joy Bates | F | 42 | Washington DC | |
| 969 | R | CA37281 | Boyle, Paul | M | 42 | Washington DC | |
| 1602 | R | CB40348 | Boys, Richard | M | 65 | Falls Church VA | |
| 1453 | R | DF51982 | Bradley, David | M | 33 | Washington DC | |
| 1127 | R | BC35023 | Brady, Linda | F | 50 | Gaithersbrug MD | |
| 1407 | R | DA44ATA | Brady, Kevin | M | 26 | Washington DC | |
| 1651 | R | CE69733 | Brady, Reed | F | 32 | Gaithersburg MD | |
| 1665 | R | CG91349 | Brady, Pamela | F | 37 | Washington DC | |
| 1959 | R | DX3XDDH | Brancato, Scott | M | 30 | Washington DC | |
| 1273 | R | BC27280 | Branch, Kristen | F | 29 | Mt. Airy MD | |
| 212 | R | DA5V9FC | Brandley, Dawn | F | 33 | Springfield VA | |
| 483 | R | CB15389 | Braseth, Emily | F | 21 | Alexandria VA | |
| 229 | R | CG87950 | Brauch, Helen | F | 38 | Rockville MD | |
| 1676 | R | DX6YTYN | Braun, Carol | F | 40 | Rockville MD | |
| 1608 | R | DF3KS4C | Braun, Marisa | F | 13 | Rockville MD | |
| 1814 | R | CD99125 | Breen, Joseph | M | 36 | Rockville MD | |
| 939 | R | DA24RYB | Breg, David | M | 40 | Wheaton MD | |
| 1951 | R | DX47K83 | Brehm, Chris | F | 27 | Alexandria VA | |
| 119 | R | DN92BM2 | Breiner, Christine | F | 26 | Baltimore MD | |
| 657 | R | DF9RFGV | Bremer, Ryan | M | 29 | Gaithersburg MD | |
| 446 | R | DN04DNP | Brenne, Phebe | F | 17 | Silver Spring MD | |
| 3108 | F | Brenne, Lara | F | 11 | Silver Spring MD | ||
| 1202 | R | DN6AND9 | Brenne, Gordon | M | 56 | Silver Spring MD | |
| 982 | R | CB58930 | Brenneman, Cyndy | F | 42 | Rockville MD | |
| 1268 | R | DX9BTN7 | Breslin, Luke | M | 26 | Washington DC | |
| 1964 | R | DA9WNHT | Brewer, Steve | M | 33 | Reston VA | |
| 1404 | R | DN0RB01 | Broaddus, Matthew | M | 26 | Woodbridge VA | |
| 745 | R | DN8AWB5 | Brooker, Sharon | F | 33 | Reston VA | |
| 894 | R | CB82718 | Brophy, Christine | F | 39 | Montgomery Vill MD | |
| 246 | R | CG58857 | Brophy, R. David | M | 43 | Montgomyer Vill MD | |
| 720 | R | DF5W7K4 | Brown, Thomas | M | 33 | Rockville MD | |
| 814 | R | CF76508 | Brown, Norman | M | 35 | Washington DC | |
| 331 | R | DF65SWA | Brown, Karsten | M | 30 | Front Royal VA | |
| 1848 | R | DX7Z4RB | Brown, Walter | M | 60 | Montgomery Vill MD | |
| 1892 | R | DX2E5TE | Brown, Kyra | F | 34 | Sterling VA | |
| 896 | R | DF8CEXV | Browne, Joseph | M | 39 | Cherry Hill NJ | |
| 1567 | R | DA7Z23A | Bruch, Mary | F | 49 | Silver Spring MD | |
| 1263 | R | DN6DE3Y | Brucker, Constanze | F | 23 | Bethesda MD | |
| 1760 | R | CG18099 | Brumback, Kenny | M | 63 | Great Falls VA | |
| 1498 | R | DN7GM87 | Bryant, Michael | M | 39 | Washington DC | |
| 1283 | R | DN0VE87 | Bubolz, Tonya | F | 33 | Alexandria VA | |
| 482 | R | DF8W4FZ | Buccine, Chad | M | 20 | Rockville MD | |
| 1133 | R | DX42FXW | Buccine, Joseph | M | 50 | Rockville MD | |
| 443 | R | DN3ZWMA | Buccine, Brent | M | 16 | Rockville MD | |
| 1457 | R | CF24741 | Bucher, Christine | F | 33 | Bethesda MD | |
| 45 | R | DF82582 | Buckheit, George | M | 47 | Reson VA | |
| 1018 | R | DN0Y3DR | Buckley, Gregg | M | 43 | Arlington VA | |
| 1088 | R | DA243NF | Buckley, Margaret | F | 47 | Rockville MD | |
| 1620 | R | DN7KY4Y | Buckley, Ian | M | 18 | Poollesville MD | |
| 1627 | R | DX66FHB | Buckley, Kathryn | F | 21 | Poollesville MD | |
| 1694 | R | DA9K8E1 | Buckley, Mary Ann | F | 46 | Poollesville MD | |
| 647 | R | DN9Z5ZN | Buening, Michael | M | 29 | Washington DC | |
| 687 | R | DX3X4Z4 | Bull, Michele | F | 31 | Eldersburg MD | |
| 699 | R | CD59358 | Burger, Marc | M | 31 | Ellicott City MD | |
| 871 | R | DN9Z1S2 | Burke, Frederick | M | 38 | Baltimore MD | |
| 2 | R | CG93384 | Burke, Edmund | M | 35 | Burtonsville MD | |
| 1925 | R | DF3HTVH | Burke, Bryan | M | 46 | Germantown MD | |
| 1233 | R | DA4DK6V | Burkhart, Roger | M | 66 | Gaithersburg MD | |
| 803 | R | CF30662 | Burki, Emaad | M | 35 | Gaithersburg MD | |
| 1325 | R | CH65856 | Burnham, Jon | M | 44 | Annandale VA | |
| 1549 | R | CF33356 | Burrell, Linda | F | 45 | Derwood MD | |
| 1112 | R | DX8TDB8 | Burrows, Dennis | M | 49 | Kalamazoo MI | |
| 1634 | R | DF82K27 | Burrows, Rebekah | F | 23 | Rockville MD | |
| 755 | R | DA4BRPB | Butz, Tami | F | 33 | Gaithersburg MD | |
| 260 | R | CE48770 | Buxton, Denis | M | 48 | Bethesda MD | |
| 1341 | R | DA9B068 | Byrne, Karen | F | 55 | Silver Spring MD |