Underwear Critical Mass

Yes, you read this right. July Critical Mass is the Underwear Mass but no worries,  the underwear part of it is optional. It's a fun, social cycling event that can be done on skates too. 

Skaters have to be comfortable skating in traffic, stopping, stepping over curbs and railroad tracks and skating downhill. You skate at your own risk. This event is not organized by this group and you are responsible for your own safety. The pace is rather slow but the distance is usually around 18 Miles. If this is too far for you to skate, just bring your bike. 

Hope to see many of you! - Kirsten


More infos can be found at the Facebook event page. 

"The 4th female led, male supported ride that advocates positive body image and gender equality. The ride takes place the last Friday in July and more than 1,000 Chicago Critical Mass participants are encouraged to bike in their underwear. 

The Ride ends at an Underwear Dance Party in support of gender equality. The movement: GET IN (your underwear), GET ON (your bike), and GET OFF (your hang-ups)...riding through the streets of Chicago in our underwear in support of green transportation, gender equality, and positive body image. Let your skin breathe!

All bodies are celebrated…board it, skate it, bike it, love it! Body paints, sound bikes and contraptions, minimal attire, and good energy are all welcome here!
Daley Plaza, 5:00 p.m.

Dance party to follow! Details coming soon!
For more info about Chicago Critical mass and how you can propose/post a map or become involved...http://chicagocriticalmass.org/
Facebook group with information about related happenings:
https://www.facebook.com/groups/UnderwearMassDanceParty "


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  • Jeremy

    Good skate. :-)

    2 · July 25

  • Kirsten

    No rain. Nice ride.

    4 · July 25

    • Jason S

      Awesome! Guess I need to find another weather forecast! :-(

      July 25

    • rashila g.

      Lol.

      July 25

  • rashila g.

    See yall next time.

    July 25

  • Tatijana G.

    Im on the south side and its amazingly clear and beautiful here - Maybe the CITY is iffy ... Next time

    July 25

  • Ed T.

    I will have to take a pass tonight. Hope to see everyone soon:)

    July 25

  • Jason S

    Have fun guys. Sorry I decided not to take the chance because of the wunderground hourly report which shows almost 70% chance of around 7-8p.

    July 25

    • Jadran L.

      I'm going to back out for the same reason.

      July 25

  • James Edward C.

    Boooo! Screw %70! It's partly cloudy at most!!!

    1 · July 25

    • Jason S

      Yea it can definitely be wrong, but I didn't want to be stuck rollerblading in the rain. I've ruined my bearings doing that before.

      1 · July 25

    • James Edward C.

      Yeah, O says it's really slippery skating in the rain. We'll have to see

      July 25

  • Tatijana G.

    Havec Fun guys & be Safe --- can't come any longer --- :(

    July 25

  • James Edward C.

    It's looking good so far...

    July 25

  • Ohsik

    What happens if it rains? Seems like we are gonna get one tonight lol

    July 25

    • Kirsten

      40% chance of rain right now. Let's see what happens....

      July 25

    • Ohsik

      If it rains, I'm goin with my bike! :D

      1 · July 25

  • Wes U.

    Don't B like I don't got a great birthday suit... But I got underwear and I'm nevous.

    July 25

  • Wes U.

    'Don't B like I got a great birthday suit... But I got underwear and I'm nevous.

    July 25

  • Andrew B.

    Critical Mass leaves Daley Plaza after 6pm.
    Facebook event for the Undie Mass: https://www.facebook.com/events/1427946434115582/
    I've seen a draft map, 11 miles, crosses 12 bridges.

    1 · July 23

  • rashila g.

    Dang I cant get over to daley plaza until 710pm. What time do they really take off?

    July 22

    • James Edward C.

      Wait, yeah. 6:30. Not 7:30... But it's pretty slow in the begining.

      July 22

    • rashila g.

      Oh ok thx guys.

      July 22

  • rashila g.

    Gonna be on my bike this time

    July 12

  • Wes U.

    We didn't never see each other on the last CM... To me the point of windy city skaters is to skate with others... I skate enough on my own... Don't need no motivation to do that.

    June 30

    • Kirsten

      It can be difficult to stay together with more than one or two other skaters during Critical Mass. The road raves are different.

      June 30

  • Ohsik

    Hey kajta is coming!

    2 · June 29

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