Thanks to Natrius for making the original list! I will try to keep this list updated as new tracks are added. The # indicates category, same as in game selection.

#arenas
arenas_bristol_arena
arenas_corrosion
arenas_harbor_05
arenas_nfdd
arenas_nfddwarehouse
arenas_rbderby
arenas_rpa2017
arenas_wimbledonderby

#colosseum
colosseum_event_01
colosseum_event_02
colosseum_event_03
colosseum_event_04
colosseum_event_05
colosseum_event_06
colosseum_event_07
colosseum_event_08
colosseum_event_09
colosseum_event_10
colosseum_event_11
colosseum_event_12

#farmlands
farmlands_s1
farmlands_s1_reverse
farmlands_s2
farmlands_s2_reverse
farmlands_s3
farmlands_s3_reverse
farmlands_s4
farmlands_s4_reverse
farmlands_s5
farmlands_s5_reverse
farmlands_s6_super

#fig8
fig8_boom
fig8_derbybankedeight
fig8_derbybankedeightbigramp
fig8_derbybankedeightnoramp
fig8_derbybankedeightsafe
fig8_elevatedeight
fig8_harbor_04
fig8_hurtfullfive
fig8_nfd
fig8_rpar2017
fig8_scac
fig8_wimbledonfig8

#gardemoen
gardemoen_drag_oval
gardemoen_drag_oval_reverse
gardemoen_dragstrip
gardemoen_dragstrip_long
gardemoen_dragstrip_chicane
gardemoen_fig8
gardemoen_head-on
gardemoen_head-on_reverse
gardemoen_zigzag
gardemoen_zigzag_reverse
gardemoen_arena_01

#greenracing
greenracing_crosskart_01
greenracing_crosskart_01_reverse

#grenland
grenland_chicane
grenland_chicane_reverse
grenland_fast
grenland_fast_reverse
grenland_folkrace
grenland_folkrace_reverse
grenland_head_on
grenland_joker
grenland_joker_reverse

#lyngås
lyngas_lyngas_fast
lyngas_lyngas_fast_reverse
lyngas_lyngas_original
lyngas_lyngas_original_reverse
lyngas_lyngas_slow
lyngas_lyngas_slow_reverse

#misc
misc_birkeland
misc_birkeland_barriers
misc_birkeland_reverse
misc_birkeland_reverse_barriers
misc_bridgetonowhere
misc_bsv
misc_bsv_reverse_day
misc_bugbearisland
misc_bugbearislandreverse
misc_cc2017
misc_ccr
misc_ccr_reverse
misc_ccr_ramp
misc_ccr_ramp_reverse
misc_crashalley
misc_dakar_s01
misc_dakar_s02_drag
misc_dakar_s03
misc_dakar_s04
misc_dakar_s05_dragstorm
misc_dakar_s06_storm
misc_dunerace
misc_dunerace_reverse
misc_eaglesnest
misc_harbor_01
misc_harbor_02
misc_harbor_03
misc_harbor_06
misc_knockhill
misc_knockhill_reverse
misc_kristiansandraceway
misc_kristiansandracewayreverse
misc_nfdhighspeed
misc_nfdwarehouserun
misc_pitstop
misc_rbrace
misc_rwr_tour
misc_space_s1
misc_sca
misc_sca_fast
misc_sfs
misc_woodhillraceway

#ovals
ovals_ae
ovals_arendaltriangle
ovals_arendaltriangle_reverse
ovals_birkeland_oval01
ovals_bristol
ovals_bristol_dirt
ovals_bristol_banger
ovals_emmenraceway
ovals_harbor_07
ovals_hillsideraceway
ovals_kingslynn
ovals_knockhill_oval
ovals_knockhill_oval_reverse
ovals_lakewood
ovals_michiganspeedway
ovals_nfdovaljump
ovals_os
ovals_osm
ovals_osr
ovals_oss
ovals_os_snow
ovals_pennsboro
ovals_pennsboro_reverse
ovals_pennsboro_minioval
ovals_pennsboro_minioval_reverse
ovals_phr
ovals_phrr
ovals_ringwood
ovals_rpa_oval
ovals_rwro
ovals_rwror
ovals_rwr_minioval
ovals_talledega
ovals_wimbledon

#pocono
pocono_oval
pocono_oval_reverse
pocono_route_1
pocono_route_1_reverse
pocono_route_2
pocono_route_2_reverse
pocono_route_3
pocono_route_3_reverse
pocono_route_4
pocono_route_4_reverse
pocono_route_5
pocono_route_5_reverse
pocono_route_6
pocono_route_6_reverse

#rallycross
rallycross_aremark
rallycross_aremark_reverse
rallycross_bronnoy
rallycross_bronnoy_reverse
rallycross_bronnoy_long
rallycross_bronnoy_short
rallycross_greenlakevalley
rallycross_hw
rallycross_hw_reverse
rallycross_hw_chicane
rallycross_hw_chicane_reverse
rallycross_knockhill_rc_short
rallycross_knockhill_rc_short_reverse
rallycross_knockhill_rc_long
rallycross_knockhill_rc_long_reverse
rallycross_lupineshill
rallycross_rugsland
rallycross_rugsland_reverse
rallycross_rwrr
rallycross_rwrrr
rallycross_simstoxshowdown