Alexios Papaioannou
Alexios leads GearUpToFit with practical, evidence-aware fitness guidance, transparent product-review standards, and reader-first editorial decisions.
About Alexios
Founder, editor-in-chief, and lead reviewer for GearUpToFit.
Alexios Papaioannou oversees GearUpToFit’s running-shoe reviews, fitness-technology coverage, calculators, training guides, and nutrition explainers. His editorial focus is clear comparison, real-world usefulness, transparent affiliate disclosure, and safer decision-making for readers.
E-E-A-T signals
- Named accountable author and editor for GearUpToFit guidance.
- Transparent affiliate and correction policies.
- Evidence-aware content process with reputable source preference.
- Product reviews focused on fit, safety, tradeoffs, and reader usefulness.
Editorial areas
- Running shoes, GPS watches, wearables, and training tools.
- Fitness calculators, workout explainers, and practical training guidance.
- Nutrition and supplement education with health disclaimers.
- Corrections, updates, and review-maintenance workflows.
Latest articles
Apple Watch Ultra 4 Review: The Two-Day Battery Changes Everything (2026)Apple Watch Ultra 4 review: 50-hour battery te ted, elite heart-rate accuracy, dual-frequency GPS, dive and atellite feature . Who hould buy it — and who houldn’Apple Watch Series 12 Review for Runners (2026)te t Continue reading →Heart Rate Zone Calculator: Karvonen HRR, LTHR & 5-Zone TrainingCalculate your exact 5-zone, 3-zone polarized, and 7-zone running heart rate training zone u ing Karvonen Heart Rate Re erve (HRR), Joe Friel LTHR, and Tanaka Max HR forRunning Pace Calculator & Race Time Predictor (2026)Interactive Running Tool • Updated 2026 Accurately calculate your running pace, fini h time , and mile-by-mile plit acro any di tance. Whether you are aiming for Running Calorie Calculator: Net vs. Gross, Incline & Fueling LabCalculate your exact Net and Gro calorie burned running by weight, pace, di tance, treadmill incline, and urface u ing ACSM VO2, Minetti lope, and 2024 Compendium METHow to Choose Running Shoes by Use: Altra, Nimbus, On Cloud, Barefoot, and Track OptionsChoo e running hoe by urface, fit, comfort, traction, and tran ition—not by brand name alone. Compare road, trail, track, and minimal option . Continue reading →