Manga: Deedlit's Tale: Volume 1 Episodes 1-5 - This sets up Parn and his friends defending his home village from Duke Raster. I'm putting this here since Deedlit grows up some here.
Chronicles of the Heroic Knight Anime - Ashram seeking the Scepter of Domination arc.
Manga: Deedlit's Tale: Volume 2 Episode 5-8 - Hobb and Maar appear here. This sets up the events of Deedlit's Tale: Volume 1 Episode 6 and 7.
Manga: Deedlit's Tale: Volume 1 Episode 6 and 7 - This would take place here since Deedlit mentions Shiris.
-A Traveler From The Elf World (Deedlit's Tale chapters 1-3) = 5 years after goblins attacked Parn's village (which was the beginning of The Grey Witch)
-Opening The Forest (Deedlit's Tale chapters 5-7) = 10 years after the War of Heroes
-Rune Soldier Louie = 11 years after the War of Heroes. The year isn't given in the first four volumes of the manga. I can't read Japanese, so I don't know if books five or six do. In the Sword World game's continuity, it's set in NRC 521, while The Grey Witch is NRC 510. https://www.mangago.me/read-manga/mahou_senshi_louie/
-The Traveling Minstrel Sings = 12 years after the War of Heroes. Specifically, the epilogue portion has dialogue saying it occurs 3 years after the main story. The epilogue is also clearly taking place during Fog of Revenge (the story this is a prequel too).
-Fog of Revenge (Deedlit's Tale chapter 4) = 15 years after the War of Heroes. Specifically, the main story ends, two panels indicate that the events of Chronicles of the Heroic Knight book 1 occur right after it (Parn and Deedlit meet with Kashue and Spark), and then narration says weeks have gone by since the end of the main story.
-Chronicles of the Heroic Knight = 15 years after the War of Heroes. The manga version only covers a very different version of the Spark part of the series. A primary antagonist, the Dark Elf Shaman named Jiba, isn't in the anime for example https://www.mangago.me/read-manga/lodoss_tousenki_eiyuu_kishiden/
-The Pledged Diadem = 100 Years after "the time of Parn and Spark."
Unknown time periods: -Totsugeki! Heppoko Boukentai - Sword World = A one-shot adaptation of several adventures starring a group of characters from the most popular Sword World replays, and third-most popular Sword World light novel series after Lodoss and Rune Soldier. Probably takes place at least 11 years after the War of Heroes (specifically, after Rune Soldier). Drawn by the guy who does Tsugumomo. https://www.mangago.me/read-manga/totsugeki_heppoko_boukentai_sword_world/
-Totsugeki! Heppoko Boukentai Dekitate - Sword World = A sequel to the previous one-shot (itself another one-shot).
-Sword World Peraperaazu! = No idea. Presumably a one-shot adaptation of Sword World WALTZ (a series of popular Sword World replays set in a part of Alecrast that has nothing to do with Ofun), but I can no longer find the site that made this claim. https://www.mangago.me/read-manga/sword_world_peraperaazu/
-Unicorn Maiden = No clear indication of when it takes place or even if it's in Alecrast or Lodoss, but Efreet is summoned at one point, so it must take place after The Demon of Flame. NOTE: THIS IS WRITTEN BY RYO MIZUNO HIMSELF
If you’re interested in the prequel and other sequels of the series since it can be confusing , here in chronological order
https://recordoflodosswar.fandom.com/wiki/List_of_manga_set_in_the_world_of_Forcelia
Manga: The Lady of Pharis - This comes first as It’s the Six great heroes.
https://www.mangago.me/read-manga/record_of_lodoss_war_the_lady_of_pharis/
Manga: Deedlit's Tale Volume 2 Episode 9 - Occurs before the start of the Grey Witch arc.
https://www.mangago.me/read-manga/record_of_lodoss_war_deedlit_s_tale/
Grey Witch Arc
Manga: The Grey Witch
https://www.mangago.me/read-manga/record_of_lodoss_war_the_grey_witch/
Anime: Record of Lodoss OVA Episode 1-8 Note: The remaining episodes of the OVA finish up on their own timeline.
Manga: The Demon of Flame - This introduces us to the Fire Clan and Deedlit gains a powerful Wind Spirit referenced in the future.
https://www.mangago.me/read-manga/lodoss_war_demon_of_flame/
Manga: Deedlit's Tale: Volume 1 Episodes 1-5 - This sets up Parn and his friends defending his home village from Duke Raster. I'm putting this here since Deedlit grows up some here.
Chronicles of the Heroic Knight Anime - Ashram seeking the Scepter of Domination arc.
Manga: Deedlit's Tale: Volume 2 Episode 5-8 - Hobb and Maar appear here.
This sets up the events of Deedlit's Tale: Volume 1 Episode 6 and 7.
Manga: Deedlit's Tale: Volume 1 Episode 6 and 7 - This would take place here since Deedlit mentions Shiris.
Chronicles of the Heroic Knight
https://www.mangago.me/read-manga/lodoss_tousenki_eiyuu_kishiden/
Anime/Manga - Spark and Neese Arc. This plays out differently where the anime sets up for the anime Legends of Crystania.
Legends of Crystania - Movie then OVA.
~~Additional (Manga only) Timeline Info:
-Lady of Pharis = 30 years before the War of heroes
https://www.mangago.me/read-manga/record_of_lodoss_war_the_lady_of_pharis/
-The Elves of the Forest of No Return (Deedlit's Tale chapter 9) = Same year as The Grey Witch, although the manga itself doesn't say this. Story ends with Deedlit going to the human world for the first time.
https://www.mangago.me/read-manga/record_of_lodoss_war_deedlit_s_tale/
-The Grey Witch: The War of Heroes takes place.
https://www.mangago.me/read-manga/record_of_lodoss_war_the_grey_witch/
-Demon of Flame = 2 years after the War of Heroes. Deedlit makes a new covenant with Jin and Efreet/Ifrit to replace the old one.
https://www.mangago.me/read-manga/lodoss_war_demon_of_flame/
-A Traveler From The Elf World (Deedlit's Tale chapters 1-3) = 5 years after goblins attacked Parn's village (which was the beginning of The Grey Witch)
-Opening The Forest (Deedlit's Tale chapters 5-7) = 10 years after the War of Heroes
-Rune Soldier Louie = 11 years after the War of Heroes. The year isn't given in the first four volumes of the manga. I can't read Japanese, so I don't know if books five or six do. In the Sword World game's continuity, it's set in NRC 521, while The Grey Witch is NRC 510.
https://www.mangago.me/read-manga/mahou_senshi_louie/
-The Traveling Minstrel Sings = 12 years after the War of Heroes. Specifically, the epilogue portion has dialogue saying it occurs 3 years after the main story. The epilogue is also clearly taking place during Fog of Revenge (the story this is a prequel too).
-Fog of Revenge (Deedlit's Tale chapter 4) = 15 years after the War of Heroes. Specifically, the main story ends, two panels indicate that the events of Chronicles of the Heroic Knight book 1 occur right after it (Parn and Deedlit meet with Kashue and Spark), and then narration says weeks have gone by since the end of the main story.
-Chronicles of the Heroic Knight = 15 years after the War of Heroes. The manga version only covers a very different version of the Spark part of the series. A primary antagonist, the Dark Elf Shaman named Jiba, isn't in the anime for example
https://www.mangago.me/read-manga/lodoss_tousenki_eiyuu_kishiden/
-The Pledged Diadem = 100 Years after "the time of Parn and Spark."
-Legend of Crystania = 300 years after Chronicles of the Heroic Knight
https://comix.ws/title/8jmvm-legend-of-crystania-the-first-adventurers
Unknown time periods:
-Totsugeki! Heppoko Boukentai - Sword World = A one-shot adaptation of several adventures starring a group of characters from the most popular Sword World replays, and third-most popular Sword World light novel series after Lodoss and Rune Soldier. Probably takes place at least 11 years after the War of Heroes (specifically, after Rune Soldier). Drawn by the guy who does Tsugumomo.
https://www.mangago.me/read-manga/totsugeki_heppoko_boukentai_sword_world/
-Totsugeki! Heppoko Boukentai Dekitate - Sword World = A sequel to the previous one-shot (itself another one-shot).
-Sword World Peraperaazu! = No idea. Presumably a one-shot adaptation of Sword World WALTZ (a series of popular Sword World replays set in a part of Alecrast that has nothing to do with Ofun), but I can no longer find the site that made this claim.
https://www.mangago.me/read-manga/sword_world_peraperaazu/
-Unicorn Maiden = No clear indication of when it takes place or even if it's in Alecrast or Lodoss, but Efreet is summoned at one point, so it must take place after The Demon of Flame.
NOTE: THIS IS WRITTEN BY RYO MIZUNO HIMSELF