Milestone Class Dinners
Milestone Class Dinners join the spring schedule in 2026, along with House happy hours, Half Century Club, Seminar Day, and more.
Join the Celebration
On Friday, May 15, 2026, we’re celebrating reunion classes ending in 1 and 6. Open to all alumni and guests. Whether it’s your 5th or 65th reunion, this dinner is for you.
$100 per guest
$75 for GOLD
(Graduates of the Last Decade) alumni
Register by Friday, May 1, 2026
Includes admission to special House happy hours, dinner at the Athenaeum, and a gift from the Caltech Alumni Association. Seminar Day registration is separate.
Join Your Class Committee
Help bring your celebration together. Class Committee volunteers reach out to classmates and encourage participation—a small effort that makes a big difference.
Make It a Weekend
Friday, May 15, 2026
Check-In
2:00–5:00 p.m. | Alumni House
Stop by the Caltech Alumni House and pick up your name tag and gift before the evening begins.
House Happy Hours
4:00–6:00 p.m. | Student Houses
Join classmates from your House and current student residents for an afternoon happy hour.
Milestone Class Dinners
6:30–9:00 p.m. | The Athenaeum
Enjoy a dinner and reception at the Athenaeum with classmates and friends to reminisce, take a class photo, and celebrate.
Saturday, May 16, 2026
Seminar Day
7:30 a.m. – 5:30 p.m. | Beckman Auditorium
The 89th annual Seminar Day includes faculty sessions from all six divisions, lab tours, Seminar Day Kids, and more. View details.
See Who’s Attending
See who’s registered and find classmates who are planning to join.
Plan Your Visit
Find campus resources, maps, parking details, Pasadena highlights, and helpful information for Caltech visitors.
FAQs
Questions about registration, attire, or getting to campus?
Start here.
