L's adventures in running, biking, swimming, falling, and cats
Graphs because science is fun!
My Garmin average pace per km against my timing chip average pace per km, averaged over every 5 km. You can see that at the very start and for the last half, both were similar but from around km 5 to 20, the Garmin showed me moving much faster than the chip. Either the course was long or much more likely, I was running too far while weaving through the crowds.