Coastal Georgia Greenway 100 and 155 Mile Ultra (CGG 155, CGG 100)

CGG 100 and 155 Mile Ultras are set up on a waitlist for 2022 and beyond. If the minimum of 20 runners register on the waitlist for either of the distances by November 1st, 2021, the CGG 2022 will then be a go!

If we do not reach at least 20 runners by November 1st, CGG 100 and 155 will be canceled.

Another big announcement for CGG 100 and 155 mile ultras is that if the 2022 race is a go, it will begin in St. Mary’s and end in Savannah. We’re reversing the start for both distances.

Currently, the booklet and turn by turn instructions on this site are set up for starting in Savannah and ending in St. Mary’s. I’ll update the booklets and turn by turn instructions very soon. In the mean time, if interested in CGG, please register on the waitlist and please share the link! And, simply reverse the booklet.

The CGG 155 came to fruition in 2015 by a group of friends from Savannah, Ga that were fascinated by the aspect of an envisioned long corridor of trails and green space spanning the coast of Georgia from St. Mary’s to Savannah, Ga. The visionary for the Coastal Georgia Greenway is Ms. Jo Claire Hickson. She’s worked hard for the past twenty years trying to bring to fruition her vision of the CGG. Our way of helping her realize her dream and vision is to host an annual long run the last weekend of March called the CGG 155. The more the CGG is promoted the greater the impact it will have on it coming to fruition.

The CGG is comprised of 20% trails and 80% on highways. Obviously, we would like the CGG to be all on trails but currently, we have to deal with highway running mostly.

The CGG 155 starts Friday, March 4th at 5:00 am in St. Mary’s, GA at the Howard Gilman’s Memorial Waterfront Park, on the grassy area in front of the amphitheatre.  The race ends at Hutchinson Island, Savannah, Ga., in between the Savannah Convention Center and, the Westin Hotel.
For course map: mapmyrun155
For location: Click here

Digital copy of CGG 155 booklet: cgg1552021dgcopy

The CGG 100 starts on Friday, March 4th at 9:00 am at St. Mary’s, Ga at Howard Gilman’s Memorial Waterfront park, on the grassy area in front of the amphitheatre.
For course map: mapmyrun100
For location: Click here

How to import a mapmyrun course into your garmin: mapmyrunTOgarmin

The maximum time frame for the CGG 155 is 60 hours.

The maximum time frame for the CGG 100 is 34  hours.

Both races end at the same location, – St. Mary’s Howard Gilman Memorial Waterfront Park, 100 W. St. Mary’s St, St. Mary’s, GA 31558 at 5:00 pm.

For the CGG 155, runners will run through nine towns, fifteen jurisdictions and six counties.

For the CGG 100, runners will run through through six towns, twelve jurisdictions and four counties.

CGG runners may have a pacer after completing fifty miles.

Mandatory Check-in aid stations

Mile marker: 0. Hutchinson Island start line, just outside of the Savannah International Trade Center. The Trade center address is 1 International Dr, Savannah, GA 31421. The race begins at the bottom of the steps that lead to the river. (restroom available at Westin Inn).

  •  Check in Station 1: Mile marker 29. King’s Ferry Boat Ramp. (restroom available)
  • Check in Station 2: Mile marker: 45.3, Liberty county. Hwy 17 and Martin rd in Midway (just past the old cemetery).
  • Check in Station 3: Mile marker: 61.2. McIntosh county. Smallest church in America, address: Townsend, GA 31331
  • Check in Station 4: Mile marker 86.8: Darien Waterfront Park. Hwy 17 and Fort King George dr.
  • Check in Station 5: Mile marker: 103.5. Glynn county. Howard Coffin Park, Ash ave and Lanier blvd (portable toilet available).
  • Check in Station 6: Mile marker: 131.8. Camden county. Satilla River Waterfront Park, Woodbine 31569 (restroom available)

Approximate miles between check-in stations:
From 0 to 1: there are 29 miles
From 1 to 2: 16.3 miles
From 2 to 3: 15.9 miles
From 3 to 4: 25.6 miles
From 4 to 5: 17 miles
From 5 to 6: 28.3 miles
From 6 to finish: 23.66 miles

County breakdown:
Chatham County: 31 miles
Bryan County: 9.34 miles
Liberty County: 18.28 miles
McIntosh County: 29.44 miles
Glynn County: 26.48 miles
Camden County: 40.89 miles

Buckles are only awarded when you complete the distance you registered for. Runners will be given their buckles upon finishing their race.

There are no drop downs allowed from CGG 155 to CGG 100.

All runners will receive a course booklet that you must present to the RD’s at every mandatory checkin.  At each mandatory check in you will receive a stamp on the booklet.

At the mandatory check in’s there will be basic aid station supplies such as gels, water, fizz and some food.  Runners are responsible for their own nutrition.

Runners or their crews are to give a status on their runner every four hours informing Dan Hernandez of the runner’s location and status. Please text Dan’s phone: 912.777.9147

It is advised to have a support team for the duration of the race but is not mandatory.  Support teams must not obstruct traffic whatsoever.  Runners and support teams are expected to respect private property and follow all Georgia traffic laws…failure to do so will cause disqualification.

Littering will not be tolerated.  So, don’t litter or, you’re in big trouble!

All Rough Runners events are cup free. You must bring your own water bottle.


  1. For any life threatening emergency please call 911.
  2. Runner or runner’s crew chief must check in with Dan Hernandez every two hours by text message or phone call.
  3. Runners must check in at every mandatory check in station.
  4. Provide race personnel your phone number and crew phone numbers.
  5. If you plan to take a break and spend the night during the duration of the race you must reach any of the mandatory check-in aid stations and inform us that you are leaving the course. You may then board a car and leave the course. Also, let us know when you plan to return so that we may have someone at that check in station upon your return to the race. When you return to the race you must return to the aid station you last checked in at.
  6. At any point during the race feel free to contact race personnel if you have any questions/problems/concerns.
  7. If you plan to quit the race notify race personnel before doing so.
  8. Do not obstruct traffic! Your crew must park well off the road when supporting you.
  9. Please be mindful and respectful of private property.
  10. Do not litter.
  11. Run against traffic or on the sidewalk as much as you can.
  12. You must wear a reflective vest and, headlamp or other light device a half hour before dusk and continue to do so until a half hour after sunrise.
  13. Carry this booklet the duration of the race.