USMLE exam day guide
Step 1 is one 8-hour day with 280 questions; Step 2 CK is one 9-hour day with 316 questions. Since May 2026 both use 30-minute blocks of about 20 questions on USMLE’s new software. Step 3 is a two-day exam. All are taken at Prometric test centers.
Source: usmle.org. Checked October 11, 2026.
| Step 1 | Step 2 CK | |
|---|---|---|
| Exam day | 8 hours | 9 hours |
| Questions | 280 | 316 |
| Blocks | 14 x 30 minutes | 16 x 30 minutes |
| Per block | Up to 20 questions | 18-20 questions |
Before test day
- Run USMLE’s new testing experience tool and tutorial for your Step.
- Bring your scheduling permit and acceptable ID exactly as Prometric and USMLE require.
- Practice full days with 30-minute blocks to build pacing and stamina.
On the day
- Break time is shared across the day; plan when you’ll take it.
- Per-question time stays about 90 seconds; don’t let shorter blocks rush you.
Official source & community discussion
USMLE: 2026 test software update (official) →
See related questions on Quora →