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GO Battle League · Announced

GO Battle League: Twilight Trails

Starts 8 PM

Sept 8, 2026, 8:00 PM UTC

All September 2026 events

League rotation

Sept 8 – Sept 15
  • Great League: Mega Edition
  • Ultra League: Mega Edition
  • Master League: Mega Edition
4× Stardust from wins
Sept 15 – Sept 22
  • Great League
  • Ultra League: Mega Edition
  • Willpower Cup: Great League Edition
Sept 22 – Sept 29
  • Ultra League
  • Master League: Mega Edition
  • Retro Cup: Great League Edition
4× Stardust from wins
Sept 29 – Oct 6
  • Master League
  • Mega Color Cup: Great League Edition
4× Stardust from wins
Oct 6 – Oct 13
  • Great League: Mega Edition
  • Ultra League: Mega Edition
  • Master League: Mega Edition
4× Stardust from wins
Oct 13 – Oct 20
  • Great League
  • Ultra League: Mega Edition
  • Little Cup
Oct 20 – Oct 27
  • Ultra League
  • Master League: Mega Edition
  • Fantasy Cup: Great League Edition
4× Stardust from wins
Oct 27 – Nov 3
  • Master League
  • Mega Halloween Cup: Great League Edition
4× Stardust from wins
Nov 3 – Nov 10
  • Great League: Mega Edition
  • Ultra League: Mega Edition
  • Master League: Mega Edition
4× Stardust from wins
Nov 10 – Nov 17
  • Great League
  • Ultra League: Mega Edition
  • 2026 GO LAIC Cup
Nov 18 – Nov 25
  • Ultra League
  • Master League: Mega Edition
  • 2026 GO LAIC Cup
4× Stardust from wins
Nov 24 – Dec 1
  • Master League
  • Mega Catch Cup: Great League Edition
4× Stardust from wins

Each block opens at the same moment worldwide, not at a local hour. Times shown are the official ones.

  • End-of-Season rewards will be available on the Battle screen.
  • Your GO Battle League rank will be reset.

Twilight Trails GO Battle League Events

Daily Discoveries: GO Battle Thursday

  • Up to 4× Stardust from win rewards. (This does not include end-of-set rewards.)
  • The maximum number of sets you can play per day will increase from five to 10 - for a total of 50 battles.

GO Battle League: Twilight Trails Rewards

Guaranteed Rank-Up Encounters

Standard Encounters

Avatar Items and Other Rewards

  • At Rank 10, you'll receive shoes inspired by Ryme.
  • At Rank 15, you'll receive a cap and earrings inspired by Ryme.
  • At Rank 20, you'll receive an outfit inspired by Ryme.
  • At Legend rank, you'll receive a pose inspired by Ryme.

Cups

Great League: Mega Edition

  • Pokémon must be at or below 1,500 CP to enter.
  • Mega-Evolved Pokémon are eligible.

Ultra League: Mega Edition

  • Pokémon must be at or below 2,500 CP to enter.
  • Mega-Evolved Pokémon are eligible.

Master League: Mega Edition

  • Mega-Evolved Pokémon are eligible.

Willpower Cup: Great League Edition

  • Pokémon must be at or below 1,500 CP to enter.
  • Only Fighting-, Psychic-, and Dark-type Pokémon are eligible.

Not allowed in this cup

Retro Cup: Great League Edition

  • Pokémon must be at or below 1,500 CP to enter.
  • Dark-, Steel-, and Fairy-type Pokémon are not eligible.

Mega Color Cup: Great League Edition

  • Pokémon must be at or below 1,500 CP to enter.
  • Mega-Evolved Pokémon are eligible.
  • Only Grass-, Fire-, Water-, Electric-type Pokémon are eligible.

Little Cup

  • Pokémon must be at or below 500 CP to enter.
  • Only Pokémon that are able to evolve and have not evolved even once are eligible.

Fantasy Cup: Great League Edition

  • Pokémon must be at or below 1,500 CP to enter.
  • Only Dragon-, Steel-, and Fairy-type Pokémon are eligible.

Mega Halloween Cup: Great League Edition

  • Pokémon must be at or below 1,500 CP to enter.
  • Mega-Evolved Pokémon are eligible.
  • Only Bug-, Poison-, Ghost-, Dark-, and Fairy-type Pokémon are eligible.

2026 GO LAIC Cup

  • Pokémon must be at or below 1,500 CP to enter.
  • Fire-, Dark-, Steel-, and Fairy-type Pokémon are not eligible.
  • Legendary Pokémon, Mythical Pokémon, and Ultra Beasts are not eligible.
  • Mega-Evolved Pokémon are not eligible for the GO Battle League version of this Cup. However, Mega-Evolved Pokémon will be eligible for the Pokémon Latin America International Championships 2026 in-person competition.

Not allowed in this cup

Mega Catch Cup: Great League Edition

  • Pokémon must be at or below 1,500 CP to enter.
  • Mega-Evolved Pokémon are eligible.
  • Only Pokémon caught during the Twilight Trails Season are eligible.
  • Mythical Pokémon are not eligible.

Attack Changes

Air Cutter
  • Trainer Battles: 45 → 60 power and decreased chance to increase user's Attack by one stage.
  • Energy cost increased
Bulldoze
  • Trainer Battles: 45 → 80 power and guaranteed chance to decrease the opponent's Defense by one stage.
  • Energy cost increased
Body Slam
  • Trainer Battles: 55 → 65 power
  • Energy cost increased
Sand Tomb
  • Trainer Battles: 40 → 55 power
  • Energy cost increased
Brine
  • Trainer Battles: 60 → 100 power
  • Energy cost increased
Bubble Beam
  • Trainer Battles: 25 → 50 power
  • Energy cost increased
Mirror Coat
  • Trainer Battles: 60 → 75 power
  • Energy cost decreased
High Horsepower
  • Energy cost decreased
Charge Beam
  • Trainer Battles: 5 → 6 power
Blaze Kick
  • Energy cost decreased
Iron Head
  • Trainer Battles: 70 → 85 power
Draining Kiss
  • Trainer Battles: 60 → 80 power and guaranteed chance to raise the user's Defense one stage.
Poison Fang
  • Trainer Battles: 45 → 50
Lunge
  • Trainer Battles: 60 → 70
Bite
  • Trainer Battles: 4 → 2 power
  • Energy generation increased
Infestation
  • Trainer Battles: 6 → 10 power
Take Down
  • Trainer Battles: 5 → 14 power
  • Energy generation increased
Scratch
  • Trainer Battles: 4 → 3 power
  • Energy generation increased
Moonblast
  • Trainer Battles: 110 → 90 power
  • Energy cost decreased
Shadow Ball
  • Trainer Battles: 100 → 90 power
Dark Pulse
  • Energy cost decreased
Psycho Boost
  • Trainer Battles: 70 → 85 power
  • Gyms and raids: 70 → 130 power
  • Energy cost decreased in Gyms and Raid Battles
Rage Fist
  • Trainer Battles: 50 → 55 power
  • Energy cost increased
Magnet Bomb
  • Energy cost decreased
Double Iron Bash
  • Trainer Battles: 55 → 70 power
Shadow Force
  • Energy cost decreased
Low Kick
  • Trainer Battles: 5 → 6 power

Every list on this page is the one the official post published. Read it on pokemongo.com.

Announced. Scopely published this. Window and details come straight from that post.

Source: GO Battle League: Twilight Trails Update, posted Aug 31, 2026, 3:51 AM UTC. First seen by this site September 5, 2026.

Window: Sept 8, 2026, 8:00 PM UTC