Get our free calendar

Science Fair Calendar 2026-27: State, Regional, and National STEM Competitions in the US and Canada

Get access to our exclusive calendar, with key dates and deadlines for the biggest STEM Competitions: 3M Young Scientist Challenge, Thermo Fisher Junior Innovators Challenge, Regeneron Science Talent Search, and Regeneron ISEF, and more.

Plus, all the deadlines and dates for all the State and Regional science fairs for ISEF in the USA and Canada.

A preview of our science fair calendar:

STEM Competition & Science Fair Calendar

Competition Calendar

Verified & updated

Competition

Milestone

Date / Window

Date

Status

Grades / Age

Location

ISEF

ISEF week

Confirmed

9–12 grade

Los Angeles, CA

Thermo Fisher JIC

Applications

Confirmed

6–8 grade

Online announcement

Thermo Fisher JIC

Top 30 Finalists announced

Confirmed

6–8 grade

Online announcement

3M Young Scientist Challenge

Challenge application

Confirmed

5–8 grade

Online

Regeneron STS

Application deadline

Confirmed

12th grade only

Online submission

Davidson Fellows Scholarship

Applications open

Confirmed

18 years or younger

Online

EUCYS

Competition

Confirmed

14–20 years old

Genoa, Italy

Genius Olympiad

Competition

Confirmed

9–12 grade

Rochester, New York

Competitions

State Fairs

Regional Fairs

Your complete map to ISEF

Our calendar covers the statewide or anchor fair in all 50 states and Washington, DC, plus nearly 250 regional fairs, so you can see your path from your school’s fair all the way to ISEF 2027 in Los Angeles.

A clear path if you’re in Canada

You’ll find all the 100 Canadian fairs, from regional STEM fairs to the Canada-Wide Science Fair, so you can follow your own route toward Team Canada-ISEF.

More places to take your project

Major competitions are listed with grade eligibility. Whether you’re in middle school or your senior year, you can see which ones fit you.

Download Our Exclusive Calendar

Get It Now

How ScienceFair Works

ScienceFair is a high-touch science fair coaching program built for students who want real competitive outcomes. Our students have earned $75,000+ in merit-based STEM scholarships and awards, and are up to 40× more likely to qualify for ISEF and nearly 3× more likely to win compared to the global average. We pair students with past ISEF winners who guide them through project ideation, research design, and judge-focused presentation.