Quantico Tri

Hosted at Officer Candidates School aboard the Marine Corps Base, the Quantico Tri is sure to bring fast times and fun to all who participate in this event. Located on the famed training grounds for all future Marine Officers, this event features a 750m open water swim in the Potomac River followed by a swift 12.8 mile bike ride. Once athletes are finished with the bike course, they will run a scenic 5K run.

All athletes will receive a technical t-shirt, swim cap, athlete number tattoos, timing chip and strap. Finishers earn a medal. Timing chip must be returned upon crossing the finish line.

For athletes new to the sport, please read most commonly violated rules to avoid penalty at the Quantico Tri.

Transition Area

Triathletes may enter the transition area beginning at 4:30 a.m. on event morning. All bikes must be racked by 6:30 a.m. before the start of the first swim wave. One pre-swim safety brief will be conducted at 6:40 a.m. at the swim start area. Bike racks are numbered and triathletes must put their bicycles and gear in their designated bicycle location. Each bike rack can hold six bikes. As such, each athlete’s space is approximately 3 feet wide by 3 feet long. Once a bike is in place, the remaining space is approximately the same size as a standard bath towel.


Swim (750m) - Triathletes will be grouped into one of six waves (first wave starting at 7:00 a.m.) to enter the Potomac River at a designated time for the swim portion of the competition. One pre-swim safety brief will be conducted at 6:40 a.m. at the swim start. Triangular buoys will mark the two turns with round, intermediate buoys present throughout the swim route to guide swimmers. The exit point of the swim will be designated by a large, inflatable "Miles" the Bulldog. When triathletes finish the swim, they will enter the transition area and proceed to their designated bicycle rack. Each triathlete’s swim time will end when they cross the timing mat located near the swim exit. Team River Runner will be providing Kayak safety support by assisting with monitoring the swim activity.

  • Team River Runner believes that every wounded and disabled veteran deserves the opportunity to embrace new challenges, invoke leadership, and promote camaraderie. Team River Runner invites wounded and disabled war veterans and their families to participate in adaptive paddling programs. Founded in 2004 at Walter Reed National Military Medical Center, Team River Runner offers weekly paddling sessions in over 60 locations across the nation. More than an adaptive sports program, it’s an opportunity to enjoy nature and realize social, physical, and emotional benefits, whether tackling whitewater rapids or paddling on peaceful flat-water, allowing veterans to reunite with their families and forge relationships with those who have endured similar pain. Our veterans are on the river to recovery.

Bike (20.4K) - Please visit the course map as the bike segment has been adjusted due to road conditions. All athletes must put on their helmet and snap the strap before mounting their bike. The helmet must remain on and buckled until the triathlete completes the bike route, dismounts and racks their bike. Not following the helmet rules may result in a disqualification (DQ). Bikes may NOT be ridden in the transition area. It is important to use extreme caution when departing the transition area. It may be very congested! Participants will not be allowed to mount their bikes in the transition area and will be required to dismount at the designated spot outside the transition area. Bike times will start when triathletes depart the transition area through the 'Bike Out' chute and end when they re-enter the transition area through the 'Bike In' chute. Once the bike portion is completed, triathletes will return their bike to their designated spot in the transition area.

  • velofix DMV is a USMC veteran owned and operated bike shop here in the DMV to serve all of your service and product needs. velofix's Mobile Bike Shop is outfitted to support you wherever you need in the transition area event morning starting at 5:00 a.m.

Run (5K) - Triathletes depart the transition area by exiting through the 'Run Out' chute. Triathletes run time will begin when they depart the transition area through the 'Run Out' chute and end when they cross the finish line.


  1. Bike storage will not be provided the night before the event.
  2. Glass containers are not allowed in the transition area.
  3. Only triathletes and transition workers are allowed in the transition area. Please advise family and friends to remain outside of the transition area.
  4. Transition area times are included in the final results.
  5. Rack bikes on race morning on the rack that corresponds to assigned bib number.
  6. Participants may not change from their assigned Swim Wave.
  7. Participants will not be allowed to mount their bikes in the transition area and will be required to dismount at the designated spot outside the transition area.
  8. Triathletes must show their race number to remove their bicycle and gear from the transition area after the race.
  9. Headphones are not be allowed on any portion of the course.

Athlete Info

Bib Packets

The helmet number is the small sticker on the front of the bib packet. Peel the sticker off of its protective paper and place it on the front of helmet. Placing the number on the side of the helmet will make it harder for the officials, photographers, volunteers and event staff to identify participants.

The bike number is the largest piece of paper and is located in the back of the bib packet. The number is upside down at one end and right side up at the other. When folded over the top tube of the bike, the bib number can be read easily from either side. There are two adhesive strips on the backside of the bike number. Peel the protective paper off the adhesive strips and then place the number on the top tube of the bike.

The run number is the middle sized paper in the bib packet. Wear this number on the run course. This number MUST be on the front of the participant. Not having the run number on the front may result in a time penalty. Safety pins will be provided at Packet Pick-up.


Tattoos will be distributed at Packet Pickup. Participant number tattoos should be applied on both arms and an age number tattoo should be applied on the back of the left leg on the calf muscle. Check out this video to learn how to properly place tattoos.


All participants will enjoy hospitality to include beverages and recovery snacks while visiting the Finish Festival booths and activities.


Signs will guide participants through Marine Corps Base Quantico, past the airfield and to the parking location situated on the parade deck at OCS. Parking is directly adjacent to the finish line and a short walk to the transition area. Please allow 20 minutes from the gate to the parking area.


Driving directions to Quantico Triathlon/12K parking:
When using GPS, search for "2189A Elrod Rd, Quantico, VA"

Take Exit 148 (Marine Corps Base Quantico) off I95 and follow to "Mainside." From I-95 South, merge right after exiting. From I-95 North, turn left at the first traffic light after exiting. Approach the gates to enter Marine Corps Base Quantico. Please have Photo ID ready to present. Once through gate, remain straight on Russell Road for approximately two miles.

At the traffic circle (Dunlap Circle), take the first exit onto Dunlap Rd, which becomes Thomas St. When arriving at the stop sign, turn right onto Range Road, and immediately veer left to go over bridge onto Bauer Rd.

Continue on Bauer Rd for approximately one mile (passing the air facility on the left). At the first stop sign, veer right onto Fleming St and cross over the train tracks. Please use caution.

The Parade Deck (large, paved surface) will be on the left. When parking on Parade Deck is filled, vehicles will be directed further down to the field across from Bobo Hall.


On event morning, the top three Quantico Tri male and female participants will be presented gold coin awards near the finish line. First place age group and masters awards will be distributed after finisher data has been verified.

View Details

Tried and True

Event Details

Course Map

Sprint-distance tri with a swim in the Potomac River, followed by a ride through Quantico and concluding with a 5K run. Accompanied by the Quantico 12K run offering a unique view of the Offer Candidates School at the "Crossroads of the Marine Corps."

View Map


Dates and times to plan for registration and participation in the Quantico Tri

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Tri Prep Planning Info


Minutes away from Marine Corps Base Quantico and the Quantico Tri course, the Holiday Inn Quantico Center is dedicated to help make runners' stay unforgettable.

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Packet Pick-up

Participants must show the E-card at Packet Pick-up either printed out or displayed on phone.

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Finishers receive a stunning medal. Award ceremonies for top finishers and age award winners will be held on event morning near the finish line.

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