Teams are approaching the northern most checkpoint of Circle tonight for both the 550 and 300 races. Brent Sass in the 550 and Matt Hall for the 300 are currently leading their respective races, but the race is far from over for Sass, and Hall has a team close on his tail.
This is one of the most difficult legs of the race, and teams will have to go back through this on their way to the next checkpoint (550) and finish (300). This section of trail includes what's known as the switchbacks which often sees slow speeds as the trail follows a very windy river bed that often sees massive overflow.
Most of the teams choosing not to rest long in the checkpoint of Central stopped just shy of the start of the Switchback for a good rest before continuing through the "slogfest". With no teams yet into Circle it will be a while yet before we will have accurate trail conditions, still teams seem to be going one to two miles per hour slower than on previous sections of trail. This is to be expected.
The 550 teams will no doubt take a break once they reach Circle, though it is not a checkpoint that has a set number of mandatory rest hours. The 300 must all take six hours plus their differential in Circle. We could see a finish as early as Monday evening for the three hundred.
For Matt Hall, this has been his race, but he hasn't been alone. He's played leapfrog several times with Isaac Teaford. Teaford is running a team from Dallas Seavey's kennel which has a few pups on their first race. Teaford is doing exceedingly well with the team and sticking right in there with Hall. With both teams just needing their 6 hours, it looks like Matt will leave with quite the cushion as he has a four mile lead on the second team.
For the 550, Brent Sass has about a 24 mile lead on the next musher (who appears to be Nicolas Petit at this time though the trackers for the 550 are not pinging consistently in the Switchbacks to have an accurate measurement). Petit has banked at least three hours more in the checkpoints than Sass has, however, and that may come into play later as they make sure to hit their mandatory level of rest. Brent prefers to rest out of checkpoints, though, so his team still has plenty left in the tank for the return trip.
From Circle mushers will head back down through the Switchbacks to Central - for the 300 this is where their race will end, for the 550 they will return to Central, Mile 101, and Two Rivers before heading to Nenana and finally the finish line in Fairbanks.
It's a slow go tonight. Expect Brent to come into Circle within the hour and the others to trickle in throughout the night and morning.
