XTERRA TRX550 Treadmill Review: High-Tech, But No Subscription NeededThe XTERRA TRX5500 is an excellent treadmill for runners and walkers who want technology, but don’t want to pay for a subscription. Stacey Nash, NASM-certified nutrition coach | Mar 6, 2023XTERRA TRX550 Treadmill Review: High-Tech, But No Subscription Needed / Published Mar 6, 2023STACEY NASH, NASM-CERTIFIED NUTRITION COACH