Revamping this thread because the previous format was impossible to search.
format: Speed Stat Number / Pokemon / Base Speed / Nature / EVs / Speed Stat Stage / IVs (if necessary)
Tier 1 [>525; >max scarf 110s]
736 / Hawlucha / 118 / Positive / 252 / +2
710 / Scolipede / 112 / Positive / 252 / +2
700 / Diancie (Mega), Metagross (Mega) / 110 / Positive / +2
656 / Charizard, Volcarona / 100 / Positive / 252 / +2
620 / Charizard, Volcarona / 100 / Positive / 184 / +2
618 / Landorus-Therian / 91 / Positive / 252 / +2
604 / Excadrill / 88 / Positive / 252 / +2
598 / Charizard, Volcarona / 100 / Neutral / 252 / +2
568 / Altaria, Dragonite, Venusaur / 80 / Positive / 252 / +2
566 / Venusaur / 80 / Positive / 252 / +2 / 30IV [HP Fire]
562 / Landorus-Therian / 91 / Neutral / 252 / +2
550 / Excadrill / 88 / Neutral / 252 / +2
538 / Kingdra / 85 / Neutral / 252 / +2
533 / Scolipede / 112 / Positive / 252 / +1
530 / Tyranitar (Mega) / 71 / Positive / 252 / +2
Tier 2 [406 - 525; >max speed base 135s to max scarf 110s]
525 / Gengar, Latias, Latios / 110 / Positive / 252 / +1
524 / Cloyster, Swampert (Mega) / 70 / Positive / 252 / +2
519 / Keldeo, Terrakion / 108 / Positive / 252 / +1
518 / Altaria, Dragonite / 80 / Neutral / 252 / +2
516 / Venusaur / 80 / Neutral / 252 / +2 / 30IV [HP Fire]
499 / Garchomp / 102 / Positive / 252 / +1
492 / Charizard, Jirachi, Staraptor, Victini, Volcarona / 100 / Positive / 252 / +1
486 / Hydreigon / 98 / Positive / 252 / +1
482 / Tyranitar (Mega) / 71 / Neutral / 252 / +2
478 / Swampert (Mega) / 70 / Neutral / 252 / +2
475 / Kyurem-Black / 95 / Positive / 252 / +1
465 / Charizard, Volcarona / 100 / Positive / 184 / +1
463 / Landorus-Therian / 91 / Positive / 252 / +1
453 / Excadrill / 88 / Positive / 252 / +1
443 / Rotom-Wash / 86 / Positive / 252 / +1
438 / Aerodactyl (Mega), Alakazam (Mega) / 150 / Positive / 252 / 0
433 / Zygarde / 95 / Neutral / 252 / +1
430 / Gyarados / 81 / Positive / 252 / +1
427 / Beedrill (Mega), Sceptile (Mega) / 145 / Positive / 252 / 0
417 / Heatran / 77 / Positive / 252 / +1
Tier 3 [351 - 405; >max speed base 110s to max speed base 135s]
405 / Lopunny (Mega), Manectric (Mega) / 135 / Positive / 252 / 0
397 / Tyranitar (Mega) / 71 / Positive / 252 / +1
394 / Aerodactyl / 130 / Positive / 252 / 0
391 / Gyarados / 81 / Neutral / 252 / +1
391 Bisharp, Hoopa / 70 / Positive / 252 / +1
390 Magneton / 70 / Positive / 252 / +1 / 30 IV [HP Fire]
388 / Altaria (Mega), Dragonite / 80 / Neutral / 252 / +1
386 / Talonflame / 126 / Positive / 252 / 0
383 / Weavile / 125 / Positive / 252 / 0
378 / Ampharos (Mega)/ 45 / Spe / 252 / +2
375 / Pidgeot (Mega), Tornadus-Therian / 121 / Positive / 252 / 0
372 / Alakazam, Sceptile / 120 / Positive / 252 / 0
369 / Lopunny (Mega) / 135 / Neutral / 252 / 0
368 / Hawlucha / 118 / Positive / 252 / 0
364 / Tyranitar / 61 / Positive / 252/ +1
361 / Absol (Mega), Azelf, Houndoom (Mega), Raikou, Starmie / 115 / Positive / 252 / 0
358 / Magnezone / 60 / Positive / 252 / +1 / 30IV [HP Fire]
357 / Serperior / 113 / Positive / 252 / 0
356 / Serperior / 113 / Positive / 252 / 0 / 30IV [HP Fire or Rock]
355 / Scolipede / 112 / Positive / 252 / 0
353 / Thundurus, Tornadus / 111 / Positive / 252 / 0
Tier 4 [300 - 350; >max speed neutral base 100s to max speed base 110s]
350 / Diancie (Mega), Gallade (Mega), Gengar, Latias, Latios, , Metagross (Mega) / 110 / Positive / 252 / 0
349 / Diancie (Mega), Latias, Latios / 110 / Positive / 252 / 0 / 30 IV [HP Fire]
346 / Cobalion, Keldeo, Terrakion / 108 / Positive / 252 / 0
339 / Lopunny, Manectric, Pinsir (Mega) / 105 / Positive / 252 / 0
333 / Garchomp / 102 / Positive / 252 / 0
331 / Pidgeot, Thundurus-Therian / 101 / Positive / 252 / 0
328 / Celebi, Charizard, Gardevoir (Mega), Manaphy, Medicham (Mega), Victini / 100 / Positive / 252 / 0
327 / Celebi, Gardevoir (Mega), Manaphy / 100 / Positive / 252 / 0 / 30 IV [HP Fire]
324 / Hydreigon / 98 / Positive / 252 / 0
317 / Kyurem, Kyurem-Black / 95 / Positive / 252 / 0
315 / Terrakion / 108 / Neutral / 252 / 0
311 / Garchomp (Mega) / 92 / Positive / 252 / 0
310 / Charizard, Volcarona / 100 / Positive / 184 / 0
309 / Landorus-Therian / 91 / Positive / 252 / 0
309 / Lopunny, Pinsir (Mega), Sharpedo (Mega) / 105 / Neutral / 252 / 0
306 / Lucario / 90 / Positive / 252 / 0
303 / Garchomp / 102 / Neutral / 252 / 0
302 / Excadrill / 88 / Positive / 252 / 0
301 / Thundurus-Therian / 101 / Neutral / 252 / 0
Tier 5 [263 - 299; >max speed base 70s to max speed neutral base 100s]
299 / Charizard, Entei, Gardevoir (Mega), Medicham (Mega), Staraptor, Victini / 100 / Neutral / 252 / 0
295 / Heracross, Pinsir, Suicune, Nidoking / 85 / Positive / 252 / 0
295 / Hydreigon / 98 / Neutral / 252 / 0
289 / Kyurem, Kyurem-Black, Zygarde / 95 / Neutral / 252 / 0
288 / Talonflame/ 126 / Neutral / 0 / 0
287 / Gyarados / 81 / Positive / 252 / 0
284 / Altaria, Dragonite, Gallade, Gardevoir, Mamoswine, Togekiss, Venusaur / 80 / Positive / 252 / 0
283 / Gardevoir, Venusaur / 80 / Positive / 252 / 0 / 0 / 30IV [HP Fire]
283 / Garchomp (Mega) / 92 / Neutral / 252 / 0
281 / Landorus-Therian / 91 / Neutral / 252 / 0
280 / Diggersby, Feraligatr / 78 / Positive / 252 / 0
279 / Lucario / 90 / Neutral / 252 / 0
278 / Heatran / 77 / Positive / 252 / 0
275 / Excadrill / 88 / Neutral / 252 / 0
273 / Absol, Beedrill, Heracross (Mega), Scizor (Mega) / 75 / Positive / 252 / 0
269 / Heracross, Kingdra, Pinsir / 85 / Neutral / 252 / 0
265 / Tyranitar (Mega) / 71 / Positive / 252 / 0
263 / Garchomp / 102 / Neutral / 92 / 0
Tier 6 [200 - 262; >max speed neutral base 50s to max speed base 70s]
262 / Bisharp, Breloom, Cloyster, Metagross, Swampert (Mega), Volcanion / 70 / Positive / 252 / 0
261 / Gyarados / 81 / Neutral / 252 / 0
259 / Altaria, Dragonite, Gardevoir, Mamoswine, Togekiss, Venusaur / 80 / Neutral / 252 / 0
258 / Venusaur / 80 / Neutral / 252 / 0 / 30 IV [HP Fire]
255 / Diggersby, Feraligatr / 78 / Neutral / 252 / 0
249 / Chesnaught / 64 / Positive / 252 / 0
249 / Heracross (Mega), Scizor (Mega) / 75 / Neutral / 252 / 0
243 / Tyranitar / 61 / Positive / 252 / 0
240 / Swampert / 60 / Positive / 252 / 0
240 / Manaphy / 100 / Neutral / 16 / 0
239 / Bisharp, Breloom, Metagross, Swampert (Mega), Volcanion / 70 / Neutral / 252 / 0
239 / Magnezone / 60 / Positive / 252 / 0 / 0 / 30 IV [HP Fire]
236 / Jirachi, Zapdos, Mew / 100 / Neutral / 0 / 0
233 / Latias, Latios, Metagross (Mega) / 110 / Positive / 252 / -1
229 / Crawdaunt / 55 / Positive / 252 / 0
221 / Tyranitar / 61 / Neutral / 252 / 0
219 / Swampert / 60 / Neutral / 252 / 0
218 / Azumarill, Diancie / 50 / Positive / 252 / 0
218 / Magnezone / 60 / Neutral / 252 / 0 / 0 / 30IV [HP Fire]
218 / Victini / 100 / Positive / 252 / -1
209 / Ampharos, Crawdaunt / 55 / Neutral / 252 / 0
208 / Rotom-Wash / 86 / Neutral / 0 / 0
206 / Cresselia, Suicune / 85 / Neutral / 0 / 0
200 / Altaria, Mandibuzz, Venusaur / 80 / Neutral / 16 / 0
Tier 7 [137 - 199; >uninvested base 50s to max speed neutral base 50s]
199 / Azumarill / 50 / Neutral / 252 / 0 / 0
199 / Victini / 100 / Neutral / 252 / 0 / -1
196 / Togekiss, Venusaur / 80 / Neutral / 0 / 0
195 / Venusaur / 80 / Neutral / 0 / 0 / 30 IV [HP Fire]
189 / Ampharos (Mega) / 45 / Neutral / 0 / 252
186 / Klefki, Scizor (Mega) / 75 / Neutral / 0 / 0
176 / Politoed, Skarmory, Metagross / 70 / Neutral 0 / 0
166 / Alomomola, Scizor / 65 / Neutral / 0 / 0
164 / Chesnaught / 64 / Neutral / 0 / 0
158 / Tyranitar / 61 / Neutral / 0 / 0
156 / Clefable, Empoleon, Porygon2, Sylveon / 60 / Neutral / 0 / 0
146 / Ampharos, Blissey / 55 / Neutral / 0 / 0
142 / Tyranitar / 61 / Negative / 0 / 0
Tier 8 [<137; uninvested base 50s and below]
136 / Aggron (Mega), Azumarill, Chansey / 50 / Neutral / 0 / 0
131 / Conkeldurr / 45 / Neutral / 20 / 0
130 / Hippowdon / 47 / Neutral / 0 / 0
126 / Ampharos (Mega) / 45 / Neutral / 0 / 0
124 / Dragalge / 44 / Neutral / 0 / 0
122 / Tangrowth / 50 / Negative / 0 / 0
121 / Tangrowth / 50 / Negative / 0 / 0 / 30 IV [HP Fire]
114 / Gastrodon / 39 / Neutral / 0 / 0
106 / Doublade / 35 / Neutral / 0 / 0
102 / Gastrodon / 39 / Negative / 0 / 0
96 / Amoonguss, Cofagrigus, Slowbro / 30 / Neutral / 0
95 / Quagsire / 35 / Negative / 0 / 0
76 / Ferrothorn / 20 / Neutral / 0 / 0
63 / Bronzong / 33 / Negative / 0 / 0
58 / Amoonguss, Cofagrigus, Reuniclus, Slowbro / 30 / Negative / 0 / 0 / 0 IV
40 / Ferrothorn / 20 / Negative / 0 / 0 / 0 IV [Gyro Ball]
Note: Paralyzed Pokemon have their speed reduced to 1/4 of their previous value.
format: Speed Stat Number / Pokemon / Base Speed / Nature / EVs / Speed Stat Stage / IVs (if necessary)
Tier 1 [>525; >max scarf 110s]736 / Hawlucha / 118 / Positive / 252 / +2
710 / Scolipede / 112 / Positive / 252 / +2
700 / Diancie (Mega), Metagross (Mega) / 110 / Positive / +2
656 / Charizard, Volcarona / 100 / Positive / 252 / +2
620 / Charizard, Volcarona / 100 / Positive / 184 / +2
618 / Landorus-Therian / 91 / Positive / 252 / +2
604 / Excadrill / 88 / Positive / 252 / +2
598 / Charizard, Volcarona / 100 / Neutral / 252 / +2
568 / Altaria, Dragonite, Venusaur / 80 / Positive / 252 / +2
566 / Venusaur / 80 / Positive / 252 / +2 / 30IV [HP Fire]
562 / Landorus-Therian / 91 / Neutral / 252 / +2
550 / Excadrill / 88 / Neutral / 252 / +2
538 / Kingdra / 85 / Neutral / 252 / +2
533 / Scolipede / 112 / Positive / 252 / +1
530 / Tyranitar (Mega) / 71 / Positive / 252 / +2
Tier 2 [406 - 525; >max speed base 135s to max scarf 110s]525 / Gengar, Latias, Latios / 110 / Positive / 252 / +1
524 / Cloyster, Swampert (Mega) / 70 / Positive / 252 / +2
519 / Keldeo, Terrakion / 108 / Positive / 252 / +1
518 / Altaria, Dragonite / 80 / Neutral / 252 / +2
516 / Venusaur / 80 / Neutral / 252 / +2 / 30IV [HP Fire]
499 / Garchomp / 102 / Positive / 252 / +1
492 / Charizard, Jirachi, Staraptor, Victini, Volcarona / 100 / Positive / 252 / +1
486 / Hydreigon / 98 / Positive / 252 / +1
482 / Tyranitar (Mega) / 71 / Neutral / 252 / +2
478 / Swampert (Mega) / 70 / Neutral / 252 / +2
475 / Kyurem-Black / 95 / Positive / 252 / +1
465 / Charizard, Volcarona / 100 / Positive / 184 / +1
463 / Landorus-Therian / 91 / Positive / 252 / +1
453 / Excadrill / 88 / Positive / 252 / +1
443 / Rotom-Wash / 86 / Positive / 252 / +1
438 / Aerodactyl (Mega), Alakazam (Mega) / 150 / Positive / 252 / 0
433 / Zygarde / 95 / Neutral / 252 / +1
430 / Gyarados / 81 / Positive / 252 / +1
427 / Beedrill (Mega), Sceptile (Mega) / 145 / Positive / 252 / 0
417 / Heatran / 77 / Positive / 252 / +1
Tier 3 [351 - 405; >max speed base 110s to max speed base 135s]405 / Lopunny (Mega), Manectric (Mega) / 135 / Positive / 252 / 0
397 / Tyranitar (Mega) / 71 / Positive / 252 / +1
394 / Aerodactyl / 130 / Positive / 252 / 0
391 / Gyarados / 81 / Neutral / 252 / +1
391 Bisharp, Hoopa / 70 / Positive / 252 / +1
390 Magneton / 70 / Positive / 252 / +1 / 30 IV [HP Fire]
388 / Altaria (Mega), Dragonite / 80 / Neutral / 252 / +1
386 / Talonflame / 126 / Positive / 252 / 0
383 / Weavile / 125 / Positive / 252 / 0
378 / Ampharos (Mega)/ 45 / Spe / 252 / +2
375 / Pidgeot (Mega), Tornadus-Therian / 121 / Positive / 252 / 0
372 / Alakazam, Sceptile / 120 / Positive / 252 / 0
369 / Lopunny (Mega) / 135 / Neutral / 252 / 0
368 / Hawlucha / 118 / Positive / 252 / 0
364 / Tyranitar / 61 / Positive / 252/ +1
361 / Absol (Mega), Azelf, Houndoom (Mega), Raikou, Starmie / 115 / Positive / 252 / 0
358 / Magnezone / 60 / Positive / 252 / +1 / 30IV [HP Fire]
357 / Serperior / 113 / Positive / 252 / 0
356 / Serperior / 113 / Positive / 252 / 0 / 30IV [HP Fire or Rock]
355 / Scolipede / 112 / Positive / 252 / 0
353 / Thundurus, Tornadus / 111 / Positive / 252 / 0
Tier 4 [300 - 350; >max speed neutral base 100s to max speed base 110s]350 / Diancie (Mega), Gallade (Mega), Gengar, Latias, Latios, , Metagross (Mega) / 110 / Positive / 252 / 0
349 / Diancie (Mega), Latias, Latios / 110 / Positive / 252 / 0 / 30 IV [HP Fire]
346 / Cobalion, Keldeo, Terrakion / 108 / Positive / 252 / 0
339 / Lopunny, Manectric, Pinsir (Mega) / 105 / Positive / 252 / 0
333 / Garchomp / 102 / Positive / 252 / 0
331 / Pidgeot, Thundurus-Therian / 101 / Positive / 252 / 0
328 / Celebi, Charizard, Gardevoir (Mega), Manaphy, Medicham (Mega), Victini / 100 / Positive / 252 / 0
327 / Celebi, Gardevoir (Mega), Manaphy / 100 / Positive / 252 / 0 / 30 IV [HP Fire]
324 / Hydreigon / 98 / Positive / 252 / 0
317 / Kyurem, Kyurem-Black / 95 / Positive / 252 / 0
315 / Terrakion / 108 / Neutral / 252 / 0
311 / Garchomp (Mega) / 92 / Positive / 252 / 0
310 / Charizard, Volcarona / 100 / Positive / 184 / 0
309 / Landorus-Therian / 91 / Positive / 252 / 0
309 / Lopunny, Pinsir (Mega), Sharpedo (Mega) / 105 / Neutral / 252 / 0
306 / Lucario / 90 / Positive / 252 / 0
303 / Garchomp / 102 / Neutral / 252 / 0
302 / Excadrill / 88 / Positive / 252 / 0
301 / Thundurus-Therian / 101 / Neutral / 252 / 0
Tier 5 [263 - 299; >max speed base 70s to max speed neutral base 100s] 299 / Charizard, Entei, Gardevoir (Mega), Medicham (Mega), Staraptor, Victini / 100 / Neutral / 252 / 0
295 / Heracross, Pinsir, Suicune, Nidoking / 85 / Positive / 252 / 0
295 / Hydreigon / 98 / Neutral / 252 / 0
289 / Kyurem, Kyurem-Black, Zygarde / 95 / Neutral / 252 / 0
288 / Talonflame/ 126 / Neutral / 0 / 0
287 / Gyarados / 81 / Positive / 252 / 0
284 / Altaria, Dragonite, Gallade, Gardevoir, Mamoswine, Togekiss, Venusaur / 80 / Positive / 252 / 0
283 / Gardevoir, Venusaur / 80 / Positive / 252 / 0 / 0 / 30IV [HP Fire]
283 / Garchomp (Mega) / 92 / Neutral / 252 / 0
281 / Landorus-Therian / 91 / Neutral / 252 / 0
280 / Diggersby, Feraligatr / 78 / Positive / 252 / 0
279 / Lucario / 90 / Neutral / 252 / 0
278 / Heatran / 77 / Positive / 252 / 0
275 / Excadrill / 88 / Neutral / 252 / 0
273 / Absol, Beedrill, Heracross (Mega), Scizor (Mega) / 75 / Positive / 252 / 0
269 / Heracross, Kingdra, Pinsir / 85 / Neutral / 252 / 0
265 / Tyranitar (Mega) / 71 / Positive / 252 / 0
263 / Garchomp / 102 / Neutral / 92 / 0
Tier 6 [200 - 262; >max speed neutral base 50s to max speed base 70s]262 / Bisharp, Breloom, Cloyster, Metagross, Swampert (Mega), Volcanion / 70 / Positive / 252 / 0
261 / Gyarados / 81 / Neutral / 252 / 0
259 / Altaria, Dragonite, Gardevoir, Mamoswine, Togekiss, Venusaur / 80 / Neutral / 252 / 0
258 / Venusaur / 80 / Neutral / 252 / 0 / 30 IV [HP Fire]
255 / Diggersby, Feraligatr / 78 / Neutral / 252 / 0
249 / Chesnaught / 64 / Positive / 252 / 0
249 / Heracross (Mega), Scizor (Mega) / 75 / Neutral / 252 / 0
243 / Tyranitar / 61 / Positive / 252 / 0
240 / Swampert / 60 / Positive / 252 / 0
240 / Manaphy / 100 / Neutral / 16 / 0
239 / Bisharp, Breloom, Metagross, Swampert (Mega), Volcanion / 70 / Neutral / 252 / 0
239 / Magnezone / 60 / Positive / 252 / 0 / 0 / 30 IV [HP Fire]
236 / Jirachi, Zapdos, Mew / 100 / Neutral / 0 / 0
233 / Latias, Latios, Metagross (Mega) / 110 / Positive / 252 / -1
229 / Crawdaunt / 55 / Positive / 252 / 0
221 / Tyranitar / 61 / Neutral / 252 / 0
219 / Swampert / 60 / Neutral / 252 / 0
218 / Azumarill, Diancie / 50 / Positive / 252 / 0
218 / Magnezone / 60 / Neutral / 252 / 0 / 0 / 30IV [HP Fire]
218 / Victini / 100 / Positive / 252 / -1
209 / Ampharos, Crawdaunt / 55 / Neutral / 252 / 0
208 / Rotom-Wash / 86 / Neutral / 0 / 0
206 / Cresselia, Suicune / 85 / Neutral / 0 / 0
200 / Altaria, Mandibuzz, Venusaur / 80 / Neutral / 16 / 0
Tier 7 [137 - 199; >uninvested base 50s to max speed neutral base 50s]199 / Azumarill / 50 / Neutral / 252 / 0 / 0
199 / Victini / 100 / Neutral / 252 / 0 / -1
196 / Togekiss, Venusaur / 80 / Neutral / 0 / 0
195 / Venusaur / 80 / Neutral / 0 / 0 / 30 IV [HP Fire]
189 / Ampharos (Mega) / 45 / Neutral / 0 / 252
186 / Klefki, Scizor (Mega) / 75 / Neutral / 0 / 0
176 / Politoed, Skarmory, Metagross / 70 / Neutral 0 / 0
166 / Alomomola, Scizor / 65 / Neutral / 0 / 0
164 / Chesnaught / 64 / Neutral / 0 / 0
158 / Tyranitar / 61 / Neutral / 0 / 0
156 / Clefable, Empoleon, Porygon2, Sylveon / 60 / Neutral / 0 / 0
146 / Ampharos, Blissey / 55 / Neutral / 0 / 0
142 / Tyranitar / 61 / Negative / 0 / 0
Tier 8 [<137; uninvested base 50s and below]
136 / Aggron (Mega), Azumarill, Chansey / 50 / Neutral / 0 / 0
131 / Conkeldurr / 45 / Neutral / 20 / 0
130 / Hippowdon / 47 / Neutral / 0 / 0
126 / Ampharos (Mega) / 45 / Neutral / 0 / 0
124 / Dragalge / 44 / Neutral / 0 / 0
122 / Tangrowth / 50 / Negative / 0 / 0
121 / Tangrowth / 50 / Negative / 0 / 0 / 30 IV [HP Fire]
114 / Gastrodon / 39 / Neutral / 0 / 0
106 / Doublade / 35 / Neutral / 0 / 0
102 / Gastrodon / 39 / Negative / 0 / 0
96 / Amoonguss, Cofagrigus, Slowbro / 30 / Neutral / 0
95 / Quagsire / 35 / Negative / 0 / 0
76 / Ferrothorn / 20 / Neutral / 0 / 0
63 / Bronzong / 33 / Negative / 0 / 0
58 / Amoonguss, Cofagrigus, Reuniclus, Slowbro / 30 / Negative / 0 / 0 / 0 IV
40 / Ferrothorn / 20 / Negative / 0 / 0 / 0 IV [Gyro Ball]
Note: Paralyzed Pokemon have their speed reduced to 1/4 of their previous value.