1. Hydration Belt by X Fit Factor - Adjustable Running Fuel Belt with Two BPA-free 10 Ounce Water Bottles for Runners - Fits iPhone 6 Plus - No Slip, No Bounce, No Rubbing (Click Link to Check Price on Amazon)
Editor's Rating : 9.4 out of 10
LIGHTWEIGHT, SUPERIOR QUALITY & SMART DESIGN - The premium quality X Fit Factor Hydration Belt is made of lightweight waterproof neoprene even the zipper is of superior quality and is sure to work smoothly for way longer. The best part is the phone pocket includes a Hole for Earphone Cord to let you enjoy the music.

2. Hydration Running Belt with Water Bottles (2X BPA Free 10oz), Fuel Belt Fits iPhone 6s Plus for Running, Race, Marathon, Hiking, Adjustable Waist Hydration Pack, Men & Women Runners Belt (Click Link to Check Price on Amazon)
Editor's Rating : 9 out of 10
LARGE POCKET- The 7.5" long pocket will secure your large mobile phone including the iPhone 6 Plus.SECURE COMFORT GRIP- The gel-based interior provides grip to prevent chafe and bounce run.

3. Hydration Running Belt for Runners – Adjustable Belt with Water Bottle (Two Leak-Proof 10oz bottles, BPA-free)- No Slip, Bounce, or Rub - Fits iPhone 7 Plus - Samsung Galaxy Note - Medical ID Card (Click Link to Check Price on Amazon)
Editor's Rating : 9.2 out of 10
LIGHTNESS AND HIGH QUALITY ALONG WITH THE PRACTICAL DESIGN - Saferunn Hydration Belt is manufactured using materials of the premium quality only based on light waterproof neoprene. All clips and zippers are manufactured using durable materials that will allow them to serve you a lot longer, and the practical design will help to carry all necessities alongside while running.BIG USEFUL POCKET WITH THREE COMPARTMENTS - Our modern running belt with water bottle can accommodate: keys, money, credit cards and other so necessary little things. Also, you don't have to worry about the space for your mobile phone as this pocket is huge. You'll be able to fit easily in it iPhone 6+, 6S Plus, 7 Plus, Samsung Galaxy S7, HTC One M9, etc. All your belongings will be conveniently placed and fixed that will allow you not to worry about them while running.

4. Avantree Running Fuel Belt Marathon Bag with Race Number Clip, 6 Loops for Energy Gel, Reflective Bands for iPhone 7 6 6s Plus & Android Smartphones - Racer (Click Link to Check Price on Amazon)
Editor's Rating : 9.8 out of 10
Ample storage: easily carry your iPhone 6 Plus, Samsung Galaxy Note 3/4 or other large Smartphones plus other essentials like keys, bank cards, changes for your marathons, triathlon or other sporting events.

5. [Voted #1 Hydration Belt] Running Fuel Belt by Runtasty; Includes accessories - 2 BPA Free Water Bottles & Runners Ebook; Fits ANY iPhone; w/Touchscreen cover; "No Bounce" Fit; 100% Guarantee! (Click Link to Check Price on Amazon)
Editor's Rating : 9.9 out of 10
★ ANTI-SLIP TECHNOLOGY FOR ULTIMATE FIT AND COMFORT! Designed to be worn on the hips, it fits ANY size up to 47" (for both women & men). The "No Bounce" Fit stays perfectly snug against your hips, which is vital for runners. The more you use it, the more you'll love it!★ 2 SEPARATE EXTRA-LARGE POCKETS