HALF MARATHON COURSE DESCRIPTION:
  1. The Half Marathon will begin on Barranca at the foot bridge at the same time as the 5K.  The Half Marathon will line up on the eastbound lanes of Barranca facing eastbound.
  2. The runners will proceed eastbound on the eastbound lanes of Barranca to Jeffrey.  The runners will cross diagonally and run east on the westbound lanes of Barranca.  At the end of the median and before the Shadow Oaks intersection, the runners make a U-turn and run west on the eastbound lanes of Barranca.  At Jeffrey, the runners will make a left turn on to the sidewalk and bike lane of the northbound Jeffrey.  The runners will then proceed south in the sidewalk/bike lane to the entrance of the south bike trail of San Diego Creek.  There, they will make a left turn and enter the south bike lane and proceed east on the south bike trail to Laguna Canyon Road.
  3. The runners will exit the south bike trail at Laguna Canyon Road and turn right (run south) in the southbound lanes to almost Alton Parkway, make a U-turn, run north in the northbound lanes of Laguna Canyon Road, turn right, re-enter the bike trail, and continue running east on the bike trail to Alton.
  4. The runners will exit the bike trail on the east side of the Alton Bridge.  They will turn right at the eastbound Alton sidewalk and run on the sidewalk or the #2 lane on Alton to Pacifica.
  5. At Pacifica, the runners turn right and proceed to Spectrum Street where they will enter the San Diego Creek bike trail heading west all the way to Laguna Canyon Road.
  6. The runners will exit the north bike trail at Laguna Canyon Road, make a right turn, and run to Barranca.  At Barranca, the runners will make a right turn and run east on the eastbound lanes to FedEx Street.  They will make a U-turn at FedEx Street and run west on the westbound lanes to Laguna Canyon Road.
  7. At Laguna Canyon Road, the runners will make a right turn and run north on the northbound lanes of Laguna Canyon Road to Waterworks Way on the #1 lane where they will make a diagonal right turn and run east on the westbound lanes of Waterworks Way to Discovery.
  8. At Discovery, the runners will turn left and run northbound on the southbound lanes of Discovery to Irvine Center Drive where they will turn left and run west in the eastbound bike lane and #3 lane.
  9. At Laguna Canyon Road, the runners will turn left unto the northbound lanes and run on the #1 lane to Waterworks Way.  At Waterworks Way, they cross diagonally to the southbound lanes of Laguna Canyon Road and continue to Barranca.
  10. At Barranca, the runners turn right and head west on the westbound lanes of Barranca to Sand Canyon.  They make a U-turn at Sand Canyon and run east on the eastbound lanes of Barranca to Laguna Canyon Road.
  11. At Laguna Canyon Road, all runners turn right, go south (7.9 mile mark) and enter the bike trail heading west to Valley Oak.
  12. The runners will exit at Valley Oak, turn right and run to Barranca.  They will make a right turn on Barranca and head east on the eastbound lanes.
  13. The runners will make a U-turn at Sand Canyon and run west on Barranca on the westbound lanes.
  14. The runners will turn right on Valley Oak and run north on the northbound lanes to Irvine Center Drive.
  15. They will make a U-turn at Irvine Center Drive and run south on the southbound lanes of Valley Oak to Barranca.
  16. At Barranca, the runners will turn right and run west on the westbound lanes of Barranca.
  17. The runners will continue on Barranca until they reach Shadow Oaks, where they will make a U-turn and run east in the eastbound lanes to Valley Oak.
  18. At Barranca and Valley Oak, the runners turn right and re-enter the south bike trail and run the bike trail back to Jeffrey.
  19. The runners will exit the bike trail at Jeffrey and turn right.  They will run north on the sidewalk.  They will turn right and enter the westbound bike trail that goes under the Jeffrey Bridge and continue on the bike path back to Creek.
  20. At Creek, the runners will exit the bike trail, make a right turn and run north to Barranca where they will turn left and run west to the finish line on Barranca.  The runners will run diagonally so that the entrance to the gas station is not blocked.