The Maine — John O’Callaghan, Kennedy Brock, Jared Monaco, Garrett Nickelsen and Pat Kirch — have confirmed dates and a full lineup for the 2027 edition of 8123 Fest, set for January 15–16 at Mesa Amphitheatre in Mesa, Arizona. The announcement arrives as the band approaches its 20th anniversary and carries with it the unusual promise that the five-piece will headline both nights with entirely different sets and no repeated songs across the weekend. Organizers say the festival, curated by The Maine, will feature a mix of long-time friends and contemporaries, and the event will include additional programming beyond the mainstage performances across the two festival days.
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Official 8123 Fest 2027 poster listing the two-night lineup and headliner for Jan. 15–16 at Mesa Amphitheatre in Mesa, Arizona.
The daily rosters have been released in full. Friday, January 15 will be anchored by The Maine and also features The Band Camino, Beach Weather, The Aces, In Color, Franklin Jonas and the Byzantines, and Moody Joody. Saturday, January 16’s bill lists The Maine again, alongside Andrew McMahon and the Strings Attached Quartet, The Academy Is…, The Summer Set, Nick Santino, Broadside and Sydney Sprague. Festival organizers described the weekend as a curated gathering of artists the band admires and has toured with over the years, assembled to mark the milestone anniversary in the band’s home region.
Promotional portrait of the festival’s five-member headlining band, used in the 8123 Fest announcement.
Beyond the two main festival days, the 8123 Fest schedule will be expanded with side shows that will be announced later, the organizers said. The event will also include a pop-up shop for festival merchandise and a charity day planned for Monday, January 18, 2027. No further details about the side shows or the charity programming were released with the initial announcement; organizers asked fans to stay tuned for updates regarding additional events and logistics tied to the weekend.
Band members framed the festival announcement around both celebration and a sense of scale for the milestone year. John O’Callaghan said the band is “standing at the edge of 20 years as a band” and described the build toward the anniversary with a mix of anticipation and exuberance. “To say I’m excited would be the biggest understatement, and now we can finally answer the most-asked question of the year so far: 8123 FEST is a GO. So it’s time to shed the parkas for a light cardigan, clean off your golf clubs (I heard that’s a sport some people play) and mentally prepare for the most beautifully manic weekend that The Maine can provide. Lineup is juiced. Vibes are sky high. And YEAR 20 + 8123 FEST will make for some historic sh*t. Giddy up!”
Pat Kirch emphasized the community aspect of the festival, positioning 8123 Fest as a reunion of sorts for the band and its fanbase. “8123 Fest is all about the people that have created a family around our band,” he said, pointing to fans convening in the band’s hometown and celebrating two decades of work. Kirch noted the band’s intention to “level up” the festival this year and said the announced artists are those the band loves and expects will deliver memorable performances for attendees.
Tickets for the festival are now on sale in a limited capacity: GA bundles and two-day tickets are available immediately, while single-day tickets are scheduled to go on sale August 7, 2026. The event’s official website, listed as 8123fest.com, has been provided as the central hub for ticket purchases and further information. Organizers also referenced upcoming announcements that will cover side shows, festival-specific activations and the charity-day programming, and encouraged fans to check the festival site for updates as new details are confirmed.
The announcement arrives amid a busy period for The Maine. Earlier in the year the band completed their first U.S. headline tour in nearly two years, which was described as the biggest on-sale of the band’s career to date. They are slated to begin an eight-city European headline run in September — the band’s largest European outing to this point — and have a slate of fall U.S. tour dates already on sale. The domestic run will begin August 20 in Tucson, Arizona, and spans 11 shows with stops including Anaheim, Chicago, Baltimore and Worcester. The band’s touring schedule and festival commitments represent an expanded footprint after recent years of intermittent touring.
On the recording side, The Maine’s most recent album, Joy Next Door, has been presented by the band as a central statement in their catalog. The group has described the LP as written and recorded in sequential order to emphasize storytelling through the album’s track sequence, and they have tied the era to a specific color motif — green — following their long-standing practice of assigning a color identity to each creative phase. Across their nearly two-decade career, the band has accumulated more than one billion global streams and built a social following exceeding one million. Their discography spans nine studio albums released between 2008 and 2023, five of which have charted on the Billboard 200, and includes a Top Five alternative radio single in 2022 with “Loved You A Little.” The band’s live history includes festival appearances at events such as Bonnaroo and Lollapalooza, as well as headlining their own sold-out 8123 Fest in the Phoenix-area market in previous years.
For ongoing updates on 8123 Fest, additional events connected to the weekend and the band’s touring and release plans, the band directs fans to their official website and Instagram channels for the latest information and confirmations.
According to the official 8123fest.com site, side events will run January 14–18, 2027, with bundles granting first access to shows, the pop-up shop, and special activations; a 20% discount code FATFLOWNINJA20 is available and tickets can be resold via Tixel. Further details on the charity initiatives with non-profits and shop exclusives are forthcoming.
The festival’s official 8123 Impact page names Project C.U.R.E. as a nonprofit partner and lists an "8123 Impact Day" volunteer shift for sorting and packing medical supplies at a Tempe warehouse, scheduled on the site for Monday, January 20th from 12:30–3:00 p.m., with a sign‑up link and a note that the warehouse is roughly 12 miles from Mesa Amphitheatre.
The 8123 Fest tickets page currently shows two‑day festival tickets on sale now and details three bundle tiers (Sunset, Desert and 8123) that include specific merchandise items — such as a 20 Year fanny pack and a The Maine Live at Audiotree 12" vinyl — plus perks like early entry, first access to the pop‑up/vinyl store, and first access to afterparties and side events.
The festival site already lists planned side events on its Tickets page, including a Thursday Kickoff Party at The Nile Theatre, Friday and Saturday afterparties, and a Sunday Send‑Off at The Nile Theatre described as featuring live karaoke, the 8123 house band and special guest performances, with bundle holders granted first access.
For venue context, Mesa Amphitheatre — the event site — is located at 263 North Center Street in downtown Mesa and has an approximate capacity of 4,950, a tiered lawn layout, and a "rain or shine" policy used for planning and logistics.