Track: Office Hours - YASSOS hero image

Track: Office Hours - YASSOS

Thursday, October 1, 2026
6:00 AM
Jones Track
2301 S Federal St, Chicago, IL 60616
This run has already taken place.
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Pace
All paces welcome
Distance
TBD
Surface
Track
About This Run
The iconic marathon workout arrives for Inner Lane athletes 10 days out from the Chicago Marathon, offering one final fitness test and a challenging session before we settle into our taper. The logic behind Yassos is that an athlete shooting to run a 4:35 marathon should be completing each 800m in 4 minutes and 35 seconds. The goal marathon pace shuffles to the goal time for each rep. While there are better tests of your fitness, this workout provides space for a final confidence boost and a strong training stimulus.

Workout:
1-2 mile warm-up
10 x 800m @ goal marathon time - hour → minute
400m reset between reps
1-2 mile cooldown

Office Hours is Inner Lane’s weekly track workout, designed by our coaches for our athletes and open to everyone willing to show up and work hard. Come meet us on the track!
Location
2301 S Federal St, Chicago, IL 60616
Inner Lane logo
Organizer
Inner Lane is a Chicago-based, women-led run coaching team. We offer personalized marathon, half-marathon, and endurance coaching for athletes of all levels. Through thoughtful coaching, weekly meetups, and real connection, we help athletes grow both on the run & beyond.