diff --git a/changes/bug24854 b/changes/bug24854
new file mode 100644
index 000000000..64e10772e
--- /dev/null
+++ b/changes/bug24854
@@ -0,0 +1,3 @@
+  o Code simplification and refactoring:
+    - Move the list of default directory authorities to their own file for
+      inclusion using the C preprocessor. Closes ticket 24854. Patch by "beastr0".
diff --git a/src/or/auth_dirs.inc b/src/or/auth_dirs.inc
new file mode 100644
index 000000000..58e6817c8
--- /dev/null
+++ b/src/or/auth_dirs.inc
@@ -0,0 +1,33 @@
+"moria1 orport=9101 "
+  "v3ident=D586D18309DED4CD6D57C18FDB97EFA96D330566 "
+  "128.31.0.39:9131 9695 DFC3 5FFE B861 329B 9F1A B04C 4639 7020 CE31",
+"tor26 orport=443 "
+  "v3ident=14C131DFC5C6F93646BE72FA1401C02A8DF2E8B4 "
+  "ipv6=[2001:858:2:2:aabb:0:563b:1526]:443 "
+  "86.59.21.38:80 847B 1F85 0344 D787 6491 A548 92F9 0493 4E4E B85D",
+"dizum orport=443 "
+  "v3ident=E8A9C45EDE6D711294FADF8E7951F4DE6CA56B58 "
+  "194.109.206.212:80 7EA6 EAD6 FD83 083C 538F 4403 8BBF A077 587D D755",
+"Bifroest orport=443 bridge "
+  "37.218.247.217:80 1D8F 3A91 C37C 5D1C 4C19 B1AD 1D0C FBE8 BF72 D8E1",
+"gabelmoo orport=443 "
+  "v3ident=ED03BB616EB2F60BEC80151114BB25CEF515B226 "
+  "ipv6=[2001:638:a000:4140::ffff:189]:443 "
+  "131.188.40.189:80 F204 4413 DAC2 E02E 3D6B CF47 35A1 9BCA 1DE9 7281",
+"dannenberg orport=443 "
+  "v3ident=0232AF901C31A04EE9848595AF9BB7620D4C5B2E "
+  "193.23.244.244:80 7BE6 83E6 5D48 1413 21C5 ED92 F075 C553 64AC 7123",
+"maatuska orport=80 "
+  "v3ident=49015F787433103580E3B66A1707A00E60F2D15B "
+  "ipv6=[2001:67c:289c::9]:80 "
+  "171.25.193.9:443 BD6A 8292 55CB 08E6 6FBE 7D37 4836 3586 E46B 3810",
+"Faravahar orport=443 "
+  "v3ident=EFCBE720AB3A82B99F9E953CD5BF50F7EEFC7B97 "
+  "154.35.175.225:80 CF6D 0AAF B385 BE71 B8E1 11FC 5CFF 4B47 9237 33BC",
+"longclaw orport=443 "
+  "v3ident=23D15D965BC35114467363C165C4F724B64B4F66 "
+  "199.58.81.140:80 74A9 1064 6BCE EFBC D2E8 74FC 1DC9 9743 0F96 8145",
+"bastet orport=443 "
+  "v3ident=27102BC123E7AF1D4741AE047E160C91ADC76B21 "
+  "ipv6=[2620:13:4000:6000::1000:118]:443 "
+  "204.13.164.118:80 24E2 F139 121D 4394 C54B 5BCC 368B 3B41 1857 C413",
diff --git a/src/or/config.c b/src/or/config.c
index 73cc7c273..0ea1ebc5d 100644
--- a/src/or/config.c
+++ b/src/or/config.c
@@ -1069,39 +1069,7 @@ get_protocol_warning_severity_level(void)
 /** List of default directory authorities */
 
 static const char *default_authorities[] = {
-  "moria1 orport=9101 "
-    "v3ident=D586D18309DED4CD6D57C18FDB97EFA96D330566 "
-    "128.31.0.39:9131 9695 DFC3 5FFE B861 329B 9F1A B04C 4639 7020 CE31",
-  "tor26 orport=443 "
-    "v3ident=14C131DFC5C6F93646BE72FA1401C02A8DF2E8B4 "
-    "ipv6=[2001:858:2:2:aabb:0:563b:1526]:443 "
-    "86.59.21.38:80 847B 1F85 0344 D787 6491 A548 92F9 0493 4E4E B85D",
-  "dizum orport=443 "
-    "v3ident=E8A9C45EDE6D711294FADF8E7951F4DE6CA56B58 "
-    "194.109.206.212:80 7EA6 EAD6 FD83 083C 538F 4403 8BBF A077 587D D755",
-  "Bifroest orport=443 bridge "
-    "37.218.247.217:80 1D8F 3A91 C37C 5D1C 4C19 B1AD 1D0C FBE8 BF72 D8E1",
-  "gabelmoo orport=443 "
-    "v3ident=ED03BB616EB2F60BEC80151114BB25CEF515B226 "
-    "ipv6=[2001:638:a000:4140::ffff:189]:443 "
-    "131.188.40.189:80 F204 4413 DAC2 E02E 3D6B CF47 35A1 9BCA 1DE9 7281",
-  "dannenberg orport=443 "
-    "v3ident=0232AF901C31A04EE9848595AF9BB7620D4C5B2E "
-    "193.23.244.244:80 7BE6 83E6 5D48 1413 21C5 ED92 F075 C553 64AC 7123",
-  "maatuska orport=80 "
-    "v3ident=49015F787433103580E3B66A1707A00E60F2D15B "
-    "ipv6=[2001:67c:289c::9]:80 "
-    "171.25.193.9:443 BD6A 8292 55CB 08E6 6FBE 7D37 4836 3586 E46B 3810",
-  "Faravahar orport=443 "
-    "v3ident=EFCBE720AB3A82B99F9E953CD5BF50F7EEFC7B97 "
-    "154.35.175.225:80 CF6D 0AAF B385 BE71 B8E1 11FC 5CFF 4B47 9237 33BC",
-  "longclaw orport=443 "
-    "v3ident=23D15D965BC35114467363C165C4F724B64B4F66 "
-    "199.58.81.140:80 74A9 1064 6BCE EFBC D2E8 74FC 1DC9 9743 0F96 8145",
-  "bastet orport=443 "
-    "v3ident=27102BC123E7AF1D4741AE047E160C91ADC76B21 "
-    "ipv6=[2620:13:4000:6000::1000:118]:443 "
-    "204.13.164.118:80 24E2 F139 121D 4394 C54B 5BCC 368B 3B41 1857 C413",
+#include "auth_dirs.inc"
   NULL
 };
 
diff --git a/src/or/include.am b/src/or/include.am
index abf62c2e8..4938ae8e7 100644
--- a/src/or/include.am
+++ b/src/or/include.am
@@ -156,6 +156,7 @@ endif
 
 ORHEADERS = \
 	src/or/addressmap.h				\
+	src/or/auth_dirs.inc				\
 	src/or/bridges.h				\
 	src/or/channel.h				\
 	src/or/channelpadding.h				\