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Grand Prismatic Spring at the Midway Geyser Basin, outside of Old Faithful developed area

Published on September 30, 2010 in Trail Running in Yellowstone National ParkFull resolution (600 × 450)

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Grand Prismatic Spring

Grand Prismatic Spring at the Midway Geyser Basin, another one of Yellowstone’s famous geothermal features.

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Ultrarunning & Trail Running Resources

Ultrarunning Basics: Ultramarathon Training Newcomers Guide to Ultramarathons Finding Trails Choosing an Ultra Finding an Ultra Pace Nutrition Basics for Trail Running Ultramarathon Clubs Ultramarathon Coaches Guide to Fastpacking Ultrarunning Films International Resources
Training Tips: Newcomers Guide to Ultras Ultra Training for Busy People Ultra Training Volume Endurance-Based Workouts Runner Strength Training Building a Trail Worth Body Series Descending on Trails Dominate the Downhills Quad Muscle Training Understanding Training Stress Our Performance Mobility Series Best Runner Exercise (No One Is Doing) Altitude Training Dynamic Core Stability Troubleshooting on the Run 10 Rules for Recovery Six Tests for Runners Stride Cues and Running Efficiency Six Things Elites Do
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Sports Medicine: Dealing with Sore Quads Running When Sick Sleep and Running Performance Overtraining Syndrome New Hydration Paradigm Running and Cramps Overcome Running Cramps Running During Pregnancy Non-Asthma Breathing Problems Vision Loss in Ultramarathons Type II Diabetes from Ultrarunning? Rhabdomyolysis and Ultramarathons

Trail Running Gear Reviews

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Other Trail Running Gear: Best New Gear Early 2017 Best New Gear Late 2017 Lightweight Running Packs Running Cap Comparison Featherweight Jackets Men's Ultrarunning Shorts Review Nathan VaporHowe 4L Race Vest Nathan VaporKrar 4L Race Vest Raidlight Gilet Responsiv 10L Vest Salomon S-Lab Sense Ultra 8 Set Jaybird Run Wireless Headphone

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