Are the JBL Endurance Race 2 good for running?

Yes. The in-ear fit with multiple tip sizes keeps them stable, and the IP68 rating means sweat and rain are not a concern. Many owners run and train in them without them loosening.

How long does the battery last?

JBL rates 12 hours of playtime per charge and about 36 hours total with the charging case. Real-world use with ANC on will be somewhat lower.

Do they have active noise cancelling?

Yes. ANC is built in and works well for gym noise and traffic, though it is not as strong as on premium flagship earbuds.

Can I use them in the rain or shower?

They are rated IP68 for dust and water, so rain and heavy sweat are fine. Do not submerge them or wear them in the shower, since that exceeds the rating's intent.

How do they compare with the Beats Fit Pro?

The JBL buds offer longer battery life and a tougher IP68 rating. The Beats Fit Pro are stronger on noise cancelling and Apple integration, while the JBL pair is the more rugged sport option.