The GO Battle League: Twilight Trails Season runs from September 8 to December 1, 2026, bringing Mega-Evolved Pokémon into more leagues and introducing a new lineup of themed Cups.
This guide covers the full GO Battle League Twilight Trails schedule, including every Great League, Ultra League and Master League rotation, all Cup rules, GO Battle Thursday bonuses, rank rewards and reward encounters. You can also see every Twilight Trails attack change and new move in our separate move update.
Twilight Trails Start Date and Rank Reset
GO Battle League: Twilight Trails begins Tuesday, September 8, 2026, at 1:00 p.m. PDT (GMT −7).
At the start of the Season:
- 🎁 End-of-Season rewards become available on the Battle screen.
- 🔄 Your GO Battle League rank will reset.
Mega Evolution in the GO Battle League
Following the debuts of Mega Chesnaught, Mega Delphox, and Mega Greninja, Mega-Evolved Pokémon are becoming a larger part of the GO Battle League. Mega Edition formats will appear throughout Pokémon GO: Twilight Trails and continue in future Seasons.
Beginning with Pokémon GO Fest: Mega Finale, select Mega-Evolved Pokémon can use an additional Charged Attack regardless of their Mega Level, opening up new options in the GO Battle League.
Mega-Evolved Pokémon will also be eligible for the first time in the Pokémon GO Championship Series at the 2026 Pokémon Latin America International Championships.
Mega Pokémon CP in GO Battle League
In upcoming Seasons, the CP of Mega-Evolved Pokémon will automatically be reduced temporarily so that they can participate in the Great League: Mega Edition and Ultra League: Mega Edition. CP will only be reduced for the duration of the battle and will return to the original CP after completion of the battle.
Full GO Battle League: Twilight Trails Schedule
The following leagues will begin and end at 1:00 p.m. PDT (GMT −7) on the dates listed below.
| Dates | Active Leagues and Cups |
|---|---|
| September 8–15 |
Great League: Mega Edition*
Ultra League: Mega Edition*
Master League: Mega Edition* |
| September 15–22 |
Great League
Ultra League: Mega Edition
Willpower Cup: Great League Edition |
| September 22–29 |
Ultra League*
Master League: Mega Edition*
Retro Cup: Great League Edition* |
| September 29–October 6 |
Master League*
Mega Color Cup: Great League Edition* |
| October 6–13 |
Great League: Mega Edition*
Ultra League: Mega Edition*
Master League: Mega Edition* |
| October 13–20 |
Great League
Ultra League: Mega Edition
Little Cup |
| October 20–27 |
Ultra League*
Master League: Mega Edition*
Fantasy Cup: Great League Edition* |
| October 27–November 3 |
Master League*
Mega Halloween Cup: Great League Edition* |
| November 3–10 |
Great League: Mega Edition*
Ultra League: Mega Edition*
Master League: Mega Edition* |
| November 10–17 |
Great League
Ultra League: Mega Edition
2026 GO LAIC Cup |
| November 18–25 |
Ultra League*
Master League: Mega Edition*
2026 GO LAIC Cup* |
| November 24–December 1 |
Master League*
Mega Catch Cup: Great League Edition* |
(*) 4× Stardust from win rewards (this does not include end-of-set rewards)
Weeks marked with an asterisk award 4× Stardust from win rewards, making them the best periods to combine rank progression with Stardust farming. The Mega Catch Cup closes the Season and only allows eligible Pokémon caught during Twilight Trails.
GO Battle Thursday Bonuses
Every Thursday during Twilight Trails features a Daily Discovery bonus for GO Battle League players.
🗓️ Every Thursday, 12:00 a.m. – 11:59 p.m. local time
Up to 4× Stardust from win rewards (excludes end-of-set).
Daily set limit increased from 5 to 10 (50 battles total).
GO Battle League Rank Rewards and Encounters
You can encounter the following Pokémon once per Season at the designated ranks.
| Rank | Guaranteed Encounter |
|---|---|
| Rank 1 |
Low Key Toxtricity
|
| Ace |
Dondozo
|
| Veteran |
Kingdra
|
| Expert |
Duraludon
|
| Legend |
Pikachu
Libre
|
If you’re lucky, some may be encountered in their Shiny forms.
Twilight Trails Reward Encounter Pool
Throughout the Season, you may encounter the following Pokémon at various ranks:
Rank 1+
Rank 6+
Rank 11+
Rank 16+
Rank 20+
The active five-star Raid Boss becomes available as a possible reward encounter.
After reaching Rank 20, the Pokémon currently appearing in five-star raids may be encountered as a GO Battle League reward.
GO Battle League Timed Research Rewards
A free battle-themed Timed Research pass will be available in the in-game shop once the Season begins.
The first page requires catching Pokémon and awards encounters designed to help build competitive teams. Each subsequent page requires:
- 100 battles
- 50 wins
Rewards include:
- ⭐ Stardust
- 🍬 Rare Candy XL
- 📘 Elite Fast TM
- 📕 Elite Charged TM
The Timed Research tracks your progress throughout the Season and rewards regular participation in the GO Battle League.
Ryme Avatar Rewards
This season’s avatar items are inspired by Ryme, the Gym Leader of Montenevera Gym in the Paldea region.
| Rank | Reward |
|---|---|
| Rank 10 | Shoes inspired by Ryme |
| Rank 15 | Cap and earrings inspired by Ryme |
| Rank 20 | Outfit inspired by Ryme |
| Legend | Pose inspired by Ryme |
Twilight Trails Mega Edition Rules
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.
All Twilight Trails Cups and Rules
Here’s the full lineup of themed Cups this Season:
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.
- 🚫 Banned: Gardevoir, Zorua, Zoroark
Retro Cup: Great League Edition
- Pokémon must be at or below 1,500 CP to enter.
- 🚫 Banned: Dark-, Steel-, and Fairy-type Pokémon
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-, and 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.
- 🚫 Banned: Chansey, Snorlax, Furret, Wobbuffet, Galarian Corsola, Kingdra, Medicham, Altaria, Dusclops, Jellicent (both male and female), Araquanid, Oranguru, Annihilape, Clodsire.
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, that is, between September 8, 2026, at 1:00 p.m. and December 1, 2026, at 1:00 p.m. PST, are eligible.
- Mythical Pokémon are not eligible.
Twilight Trails puts Mega Evolution at the center of the GO Battle League, with Mega Edition formats appearing throughout the schedule. Before building your teams, check the full list of Twilight Trails attack changes and new moves to see which Pokémon gained or lost ground in the new PvP meta.
