2027 INVINCIBLE CHALLENGE
One Revolution. Infinite Possibilities.
Make this your best trip around the Sun yet!
Join us for the 2027 Invincible Challenge and discover what you're capable of accomplishing in one extraordinary year! Choose your goal of 2,027 miles or 2,027 kilometers and spend 2027 challenging yourself, building strength, and celebrating every milestone along the way.
Walk, run, cycle, swim, or complete your distance through your favorite distance-based activities. Every mile or kilometer brings you closer to your goal!
The online log opens January 1, 2027. Tackle the distance on your own or team up with friends, family, or coworkers! There is no limit to the number of group members.
This registration option includes:
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2027 MILES Women's Relaxed Tee
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Optional access to the online manual activity log
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Printable progress tracker to color in as you go
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Downloadable finisher certificate to print upon completion
ABOUT THE SHIRTS:
• 100% combed and ring-spun cotton
• Heather Prism Lilac & Heather Prism Natural are 99% combed and ring-spun cotton, 1% polyester
• Other Heather colors are 52% combed and ring-spun cotton, 48% polyester
• Light weight, Relaxed fit
• Pre-shrunk fabric
• Crew neck
Size guide
| SHIRT WIDTH (inches) | SHIRT LENGTH (inches) | US SIZES | EU SIZE | UK SIZE | SLEEVE LENGTH (inches) | |
| S | 18 ½ | 25 ¼ | 6-8 | 36-38 | 10-12 | 7 ¾ |
| M | 20 | 26 | 10-12 | 40-42 | 14-16 | 8 ¼ |
| L | 22 | 26 ¾ | 14-16 | 44-46 | 18-20 | 8 ¾ |
| XL | 24 | 27 ½ | 18-20 | 48-50 | 22-24 | 9 ½ |
| 2XL | 26 | 28 ¼ | 22-24 | 52-54 | 26-28 | 10 ¼ |
| 3XL | 28 | 29 | 26-28 | 56-58 | 30-32 | 10 ¾ |
| SHIRT WIDTH (cm) | SHIRT LENGTH (cm) | US SIZES | EU SIZE | UK SIZE | SLEEVE LENGTH (cm) | |
| S | 47 | 64.1 | 6-8 | 36-38 | 10-12 | 19.7 |
| M | 50.8 | 66 | 10-12 | 40-42 | 14-16 | 21 |
| L | 55.9 | 68 | 14-16 | 44-46 | 18-20 | 22.2 |
| XL | 61 | 69.9 | 18-20 | 48-50 | 22-24 | 24.1 |
| 2XL | 66 | 71.8 | 22-24 | 52-54 | 26-28 | 26 |
| 3XL | 71.1 | 73.7 | 26-28 | 56-58 | 30-32 | 27.3 |