Olympiapark's Annual Festival Calendar: When to Go for What
Beyond its permanent attractions, Olympiapark runs a real annual rhythm of recurring festivals worth planning around as a family. Osterfest (Easter Festival) is a single-day event, 5 April in 2026, a six-hour program around the Olympic Tower and Willi-Daume-Platz with a magic clown, a fairy-tale storytelling tent, craft stations, and face painting, largely free. MASH runs 26-28 June 2026, a free three-day action-sports festival with skateboarding, BMX, wakeboarding, mountain biking, and street dance crews. Sommernachtstraum (sometimes referred to as Mittsommernachtstraum, though that's not its official name) is a single-evening music festival by the lake, scheduled for 18 July 2026, with international artists and fireworks. The biggest is Sommerfestival, 31 July through 23 August 2026, open Monday-Thursday 12:00-23:00 and Friday-Sunday 11:00-23:00, with free entry to the grounds (individual rides, stalls, and some ticketed shows cost extra), including dedicated Children's Days with reduced prices and a Kids' Zone, a games-themed family weekend 14-16 August, and free open-air concerts at the Theatron by the lake running through most of the festival. Alongside all of this, a flea market (Flohmarkt) runs nearly every Friday and Saturday, 7:00-16:00, at the Parkharfe, year-round, except on holidays or when a major event like Sommerfestival or MASH occupies the grounds, a far more regular event than a handful of scattered dates.
The Official Rule
Olympiapark doesn’t just have permanent attractions, it runs a genuine annual rhythm of recurring festivals, and knowing roughly when each one happens (and which ones are single days versus multi-week) makes planning a family calendar around it much easier.
| Festival | 2026 dates | Length | Cost |
|---|---|---|---|
| Osterfest (Easter Festival) | 5 April | Single day (~6 hours) | Largely free |
| MASH (action sports) | 26–28 June | 3 days | Free |
| Sommernachtstraum | 18 July | Single evening | Ticketed concert |
| Sommerfestival | 31 July – 23 August | ~3.5 weeks | Free grounds, paid rides |
| Flohmarkt (flea market) | Nearly every Fri/Sat, year-round | 7:00-16:00 | Free entry |
Osterfest opens the festival year as a genuinely single-day event. Olympiapark München’s official 2026 Osterfest page confirms 5 April 2026 as a six-hour program around the Olympic Tower and Willi-Daume-Platz, with a magic clown, a fairy-tale storytelling tent, craft stations for kids, and face painting, largely free activities rather than a paid, multi-day fair.
MASH is a free three-day action-sports weekend in late June. mucbook.de’s independent 2026 event listing confirms 26-28 June 2026, free entry for all visitors, with skateboarding, BMX, wakeboarding, mountain biking, and street dance crews performing and running open sessions.
Sommernachtstraum, officially named that rather than “Mittsommernachtstraum,” is a single lakeside evening, not a multi-day event. Olympiapark München’s official June 2026 calendar lists it for 18 July 2026, an evening music festival by the Olympiasee with international artists and a fireworks display, worth booking as a specific evening out rather than a flexible weekend.
Sommerfestival is the big one, running roughly three and a half weeks. Olympiapark München’s official Sommerfestival 2026 page confirms 31 July through 23 August 2026, open Monday-Thursday 12:00-23:00 and Friday-Sunday 11:00-23:00. Entry to the grounds is free, with individual rides, stalls, and some ticketed shows costing extra. The program specifically includes Children’s Days with reduced prices and a standing Kids’ Zone, a games-themed family weekend 14-16 August, a fireworks/sky show on 12 August, and free open-air concerts at the Theatron by the lake running through most of the festival.
The flea market is the one recurring event without a fixed annual date, but it’s far more frequent than an occasional pop-up. Independent Munich event listings confirm it runs nearly every Friday and Saturday, 7:00-16:00, at the Parkharfe, year-round, with exceptions only for holidays or days when a major event like Sommerfestival or MASH occupies the grounds, so it’s realistic to plan a spontaneous Saturday morning visit rather than hunting for one of a handful of rare dates.
What Real People Say
Families who’ve been to Sommerfestival’s Children’s Days describe the reduced pricing and Kids’ Zone as making a real difference for a full-day visit with younger kids, several specifically plan around the games-themed family weekend in mid-August rather than a random midweek evening.
Visitors who’ve caught MASH describe it as a genuinely different atmosphere from Sommerfestival, more of an action-sports showcase than a family fair, several mention it working well as a shorter afternoon visit rather than a full-day plan, especially with younger kids who aren’t there for the skate/BMX demonstrations themselves.
Step by Step
- Mark the single-day events on your calendar early: Osterfest (5 April) and Sommernachtstraum (18 July) in 2026 are one-off dates, not flexible weekends, plan around the actual date.
- Budget separately for Sommerfestival’s paid attractions, grounds entry is free but individual rides and some shows cost extra, on top of that, the Theatron concerts by the lake are free.
- If you’re bringing younger kids to Sommerfestival, target the Children’s Days or the 14-16 August family weekend specifically rather than a random evening.
- Feel free to plan a Flohmarkt visit on short notice, it runs nearly every Friday and Saturday year-round rather than a handful of scattered dates, just check the current official calendar in case a major event has taken over the grounds that particular weekend.
- For MASH, expect an action-sports showcase rather than a classic family fair, still free and worth a shorter visit, just set expectations accordingly with younger kids.
Compliance Note
This page explains the general structure, 2026 dates, and typical program of Olympiapark’s main recurring festivals as published by Olympiapark München and independent Munich event listings, current as of mid-2026. Dates, hours, and program details change year to year and closer to each event. Confirm current details directly on the official Olympiapark München site before you go.
FAQ & Common Pitfalls
Which of these festivals actually costs money?
General access to the grounds is free for Osterfest, MASH, and Sommerfestival, along with the free Theatron concerts during Sommerfestival. Sommernachtstraum is the exception, it's a ticketed concert event on its own, not free grounds access. What else costs money are the individual rides and attractions inside Sommerfestival specifically, and any ticketed concerts or special shows that get added to the calendar. Budget for those separately rather than assuming the whole day is free.
Is Osterfest worth building a whole day around?
It's genuinely a single-day event, not a multi-day festival, so plan for one afternoon rather than a return visit. In 2026 it runs a six-hour program on 5 April with a magic clown, a fairy-tale storytelling tent, craft stations, and face painting around the Olympic Tower and Willi-Daume-Platz, largely free, which makes it an easy half-day out rather than something to build a whole trip around.
Does the flea market happen on a predictable schedule we can plan around months ahead?
Yes, more predictably than you might expect, it's the one exception to a fixed annual date on this list, but not because it's rare. The Olympiapark Flohmarkt runs nearly every Friday and Saturday, 7:00-16:00, at the Parkharfe, year-round, with exceptions only for holidays or days when a major event like Sommerfestival or MASH occupies the grounds. That's a far more regular rhythm than a handful of scattered dates, so a spontaneous Saturday morning visit is realistic, just check the current official calendar in case a big event has bumped that particular date.
Is Sommerfestival actually suitable for younger kids, or is it mostly a teen/adult event?
It's genuinely built for families with a dedicated Children's Days program (reduced prices) and a standing Kids' Zone throughout the festival, on top of a specifically games-themed family weekend, 14-16 August in 2026. It's not purely an adult nightlife event, though evening hours do run later (until 23:00), so plan your visit time around your kids' age.