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|Headquarters||Arlington Heights, Illinois|
|Service area||Cook, Lake, Will, Kane, McHenry, and DuPage Counties|
|Service type||Commuter, Paratransit|
366 owned vehicles in paratransit service
80 community vehicles
|Daily ridership||95,400 (Q4 2016)|
|Annual ridership||28,392,400 (2016)|
|Fuel type||Diesel, Diesel-Electric, CNG|
|Executive Director||Rocky Donahue|
It was created in 1983 by the RTA Act, which established the formula that provides funding to the CTA, Metra, and Pace. The various agencies providing bus service in the Chicago suburbs were merged under the Suburban Bus Division, which rebranded as Pace in 1984. In 2013, Pace had 39.925 million riders.
Pace's headquarters are in Arlington Heights, Illinois. Pace is governed by a 13-member Board of Directors, 12 of which are current and former suburban mayors, with the other being the Commissioner of the Chicago Mayor's Office for People with Disabilities, to represent the city's paratransit riders.
The six counties that Pace serves are Cook, Lake, Will, Kane, McHenry, and DuPage. Some of Pace's bus routes also go to Chicago and Indiana. In some areas, notably Evanston, River Forest, Oak Park, and Skokie, both Pace and the Chicago Transit Authority (CTA) provide service.
Many of Pace's route terminals are located at CTA rail stations and bus terminals and Metra stations. The CTA and Pace have shared a payment system since 2014 called Ventra. Ventra accounts are required to obtain transfers. In 2015, Metra regional rail was added to the Ventra app. 
Pace buses generally have longer routes than CTA buses. Due to its geographic service area, service is provided by nine operating divisions, as well as under agreements with several municipalities and private operators (school bus and motor coach companies).
Pace buses provide service from the suburbs to various special events in the city, such as Routes 282 and 779 for Chicago Cubs games, Routes 773, 774 and 775 for Chicago White Sox games, Routes 237, 768, 769 and 776 for Chicago Bears games, Route 222 provides extra service to the Allstate Arena in Rosemont for events scheduled there, Route 284 to Six Flags Great America, Route 387 for events at Toyota Park in Bridgeview. There is also seasonal service to Brookfield Zoo.
Pace is responsible for ADA paratransit service in its service area, and, effective July 1, 2006, for paratransit service in Chicago. Pace also coordinates various Dial-a-Ride projects, usually sponsored by various municipalities and townships. One of the largest is Ride DuPage, sponsored by Du Page County Human Services. Pace states that it is the nation's largest paratransit service provider, providing approximately 17,000 daily trips on paratransit, dial-a-ride and ADvAntage vanpools.
Pace operates a Vanpool Incentive Program, where groups save by commuting together in a van owned and maintained by Pace and driven by one of the participants. There is also a Municipal Vanpool Program, under which Pace provides a van to a municipality, for any public transportation purpose (such as demand response service for senior citizens).
In 2011, Pace received its first Diesel-Electric Hybrid buses from Orion Bus Industries. These Orion VII 3G buses are the first buses in the Pace fleet to not be powered directly by diesel. In 2015, Pace received its first fleet of compressed natural gas buses from ElDorado National, these buses operate mainly in the southern suburbs.
The majority of Pace bus routes run daily, seven days a week. Other routes run Monday through Saturday, weekdays only, or weekday rush hours only. One route, 352 Halsted, runs 24 hours a day/7 days a week, and four routes 390, 392, 395 and 890, run only for weekday UPS shifts.
- Fox Valley (North Aurora)
- Heritage (Joliet)
- North (Waukegan)
- North Shore (Evanston)
- Northwest (Des Plaines)
- River (Elgin)
- South (Markham)
- Southwest (Bridgeview)
- West (Melrose Park)
Municipally supported shuttles and "trolley" services
Other major facilities
|Year||Manufacturer & Model||Length||Engine Type||Numbers||Divisions||Notes|
|40 ft (12.19 m)||Diesel||6162–6261
|35 ft (10.67 m)||Diesel||6600–6684
|40 ft (12.19 m)||Diesel||6262–6322
EZ-Rider II MAX
|30 ft (9.14 m)||Diesel||2600–2825
|Fox Valley, Heritage, Highland Park, North Shore, Northwest, River, Southwest, Village of Niles|
EZ-Rider II BRT
|32 ft (9.75 m)||Diesel||2826–2829
|30 ft (9.14 m)||Diesel-Electric (Hybrid)||2830–2831
|40 ft (12.19 m)||Diesel||6950–6979
|40 ft (12.19 m)||Diesel||6323–6575
|East Dundee, North, North Shore, Northwest, River, Southwest, West|
|40 ft (12.19 m)||CNG||15500–15520
- Individual units in a series may be retired or out of service (also, a few units in a mostly retired series might still be operating).
- No buses with fleet numbers ending in 13 (6262–6322 consists of 60 buses, and there is no 6313).
- Buses delivered in 2005 or later have the new Pace logo. Starting in 2013, buses delivered in 2002–2004, began receiving the current logo.
- Some routes operated with paratransit or community vehicles.
- Per 2010 proposed Pace budget Archived 2011-06-06 at the Wayback Machine, which proposes eliminating a number of them.
- Per 2010 proposed Pace budget Archived 2011-06-06 at the Wayback Machine, which does not list any ElDorado 30 foot buses above 2741.
- "Transit Ridership Report Fourth Quarter 2016" (pdf). American Public Transportation Association. March 3, 2017. Retrieved 2017-04-09 – via http://www.apta.com/resources/statistics/Pages/ridershipreport.aspx.
- Pace. "Pace Board of Directors". Retrieved 2008-10-22.
- "Ventra™ is here, Pace riders" (Press release). Pace. 2014-03-19. Retrieved 2014-03-19.
- "CTA, Metra and Pace Release New Ventra App to the Public". Chicago Transit Authority. Retrieved 23 December 2018.
- Pace. "Special Events". Retrieved 2007-10-01.
- Illinois General Assembly (2005). "Public Act 0370, 94th General Assembly".
- Pace. "Dial-a-ride Service Directory". Retrieved 2007-10-01.
- DuPage County. "Ride DuPage".
- Pace. Moving Forward (newsletter), July 23, 2010.
- Pace. "Vanpool Incentive Program". Retrieved 2007-10-01.
- Pace. "Municipal Vanpool Program". Retrieved 2007-10-01.
- Pace. "Frequently Asked Questions". Retrieved 2007-10-01.
- "Pace Buses to Ride on Shoulder of I-55". NBC 5 Chicago. Retrieved 15 June 2015.