This is the best little headlamp I have ever used! The Petzl e+LITE weighs less then one ounce and has a battery life up to 45 hours. The LED works real well for any race that starts in the dark, you can clip the light to the rim of your hat and leave it on until night time returns, you won’t even know it is there. I would not rely on this light for the full night leg of a race but I would leave it on your hat or in your pack for a back up light. The e+LITE has a red LED that blinks up to 45 hours if you need rescued in the backcountry, great feature for safety! I will be starting the Bear 100 with this lite in two weeks!
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(MSRP: $29.90) and save 10% (use code below):
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With your purchase use coupon code 1UX-1-UJENB to receive 10% off on trail running shoes and accessories from Backcountry.com
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Leland Barker needs some volunteers for the BEAR 100 if you want to hang around the mountains during the fall colors! Leave a comment or contact Leland through the Bear web page.

I bought a similar one and cut off part of the elastic band to make it even lighter and then wrapped them around the top of my handbottles. Like you said, it provided good light for the early morning hours.
See: http://runlaketahoe.blogspot.com/2007/07/new-bottle-lamps-ready-for-trt100.html
Regards,
Pete
What light do you use for a full night leg of a race?
For the all night race the Petzl MYO XP is my favorite. With 3 light lithium batteries no battery changing at night and the light is super bright. The combination of the two is unmatched. I will say I have not previewed every light out there, but this one works great. -Karl
Thanks for the tip Peter!
Karl,
Did you mean a 3 lights or 3 light batteries – there are 2 myo light models on backcounty not sure which one you have ?.
John, that would be 3 batteries, double A lithium for the lightest. They are pricy but last longer as well. It’s called the MYO XP. Not the MYO 5 or any other. Caoi
Thanks Carl- take care