Franconia Ridge traverse

Franconia mapOn a warm day in early June, I joined Aarathi and Shrirang for a traverse of Franconia Ridge from Lincoln Woods to Lafayette Place, summiting Flume, Liberty, Little Haystack, Lincoln, and Lafayette. Total 14.5 miles, 5325′ of vertical gain, 10.5 hours, 258 photos. A beautiful day!  The alpine flowers were blooming, the sun was shining, and the wind was cool. The only downside is that several hundred other hikers also realized it was a great day to hike Franconia Ridge!

Check out the photo gallery on SmugMug.

Pebble Time, Fitbit Flex, and Apple Watch.
Pebble Time, Fitbit Flex, and Apple Watch.

I also decided to test four activity trackers on this hike: iPhone 5s (i.e., Apple Health app), Fitbit Flex, Pebble Time, and Apple Watch 42mm.

Test conditions:

  • I left all four devices in their charger overnight.
  • As I left the house, I put all three trackers on my left arm.
  • I did almost no walking until reaching the trailhead.
  • At the trailhead, I put the iPhone in Airplane mode, enabled Bluetooth, and stored it in a shoulder-pad holster (thus attached to torso).
  • All three trackers had Bluetooth enabled.
  • At the end of the hike, I checked status of each device.


  • Fitbit Flex: 30,572 steps, 14.04 miles, 3394 cals, 5h5m active; battery 100%.
  • Pebble Time: 22,073 steps, 12.4 miles, 2233 cals, 3h35m active; battery 90%.
  • Apple Watch 42mm: 32,449 steps, 14.30 miles, 1156 active cals, battery 7%.
  • Apple Health (iPhone 5s): 32,354 steps, 14.71 miles, battery < 20%.

Apple Health (via Watch? I’m not sure) counted more steps, but close to the Fitbit. Watch and Fitbit had the best distance estimate. Fitbit had best battery life, followed by Pebble.

Author: dfkotz

David Kotz is an outdoor enthusiast, traveller, husband, and father of three. He is also a Professor of Computer Science at Dartmouth College.

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