Quick start guide
8 Forerunner 910XT Quick Start Manual
You can record your swim data including
distance, pace, stroke count, and stroke
type (pool swim only).
: The Forerunner cannot record
heart rate data while swimming.
Hold .
Select > .
Select your pool length or enter a
custom length.
If necessary, select >
> >
to customize the swim training pages.
For a complete list of the available
data elds, see the owner’s manual.
Select .
If you stop to rest, select , and
select again when you resume
swimming.
This creates a rest interval separate
from your swim interval.
After completing your swim, select
.
Hold to save your data and
reset the timer.
: For additional information about
open water swimming and swim data
elds, see the owner’s manual.
• A length is one trip down the pool.
• An interval in swimming is like a lap in
running. You can break your swim into
swim intervals and rest intervals.
• A stroke is counted every time your
arm wearing the Forerunner completes
a full cycle.
• Your swolf score is the sum of the
time for one length and the number of
strokes for that length. For example,
30 seconds plus 15 strokes equals
a swolf score of 45. Swolf is a
measurement of swimming efciency
and, like golf, a lower score is better.
• Your swim efciency index is the sum
of the time and the number of strokes
that it takes to swim 25 meters. This
allows you to compare your swim
efciency to another pool or an open
water workout. A lower swim efciency
index is better.