Rails to River XC Mountain Bike Race

June 2, 2024
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Rails to River XC Mountain Bike Race

The Rails to River XC Mountain Bike Race will return to Lake Fairfax in 2024!  The R2R is a cross country mountain bike race with racers doing 1, 2, or 3 laps of the approximately 7 mile course.

Race Day Info Sent to Riders

**** If the website below says race is full…then race is full!  No other race day spots available!! ****


Race Date: June 2, 2024
Race Format:
XC with 1, 2, or 3 laps (~7 mile per lap – modified course for 2024)

  • Base (1 lap = 7.5 miles)
  • Sport (2 laps = 13.5 miles)
  • Expert (3 laps = 19.5 miles)
  • In each race, we’ll have the following classes: female 19-U, male 19-U, open female, open male, male masters (40+), female masters (40+), male masters (50+), female masters (50+), female singlespeed, male singlespeed, clydesdale (200lb+).  Subject to change.

We are separating each race into wave starts with groups of classes to help space out the field.


Lake Fairfax Trail Fund

All the trails at Lake Fairfax Park are primarily built and maintained by volunteers organized by the Mid-Atlantic Off-Road Enthusiasts (MORE).  All racers will have the opportunity to donate to the Lake Fairfax Trail Fund during registration.

Race Course

Race Course Notes

  • We are using a modified course in 2024 due to the stream valley restoration that impacts the eastern portion of the race course.
  • The race course is still roughly 7 miles in length, but the start and finish have moved to canopy pavilion G at the entrance of the park.
  • The elevation change is about 500 feet and there are no significant climbs, although there are numerous shorter ones.
  • The race starts in the gravel road just to the right of pavilion G.
  • There are a few fairly technical rock sections, but they are short and can easily be walked if needed.
  • Lake Fairfax is awesome…come get some!
Rails to River Course Map (2024 update)

Registration Fees

$35 to $65
Longer races at $5 more than shorter races.  Price changes occur on 1/1, 2/20, 4/6.
Race day registration is available if the race doesn’t sell out (the race has sold out all 3 years) for an additional fee.

Registration Fee Includes

Fun and challenging course design, professional race operations, wonderful volunteer support, mechanical support, awesome aid stations, medical support, plentiful post-race food, electric atmosphere, great music, and awards and give-a-ways.

Race Day Schedule

Sunday June 2, 2024
– Base (1 lap) race start
– Sport (2 laps) race start
– Expert (3 laps) race start

Draft Race Start Procedures (subject to change)
We are separating each race into wave starts to allow enough space to spread out the field of riders.  Each wave will be separated by a few minutes.  Exact start times will be based on the number of riders in each class.



Lake Fairfax Park
1400 Lake Fairfax Drive
Reston, VA 20190

From Interstate 495 (Capital Beltway):

  • Lake Fairfax Park may be reached by taking Beltway Exit 47A which is Route 7 or Leesburg Pike west for approximately 7-8 miles to a left on Baron Cameron Avenue.
  • Take the second left on Lake Fairfax Drive which will lead you directly into the park.
  • Enter the follow the signs to check-in.

From Interstate 66:

  • Take I-66 to Route 286 (Fairfax County Parkway – formerly Rt 7100) towards RESTON/ HERNDON and travel about 9.4 miles.
  • Merge onto BARON CAMERON AVE / VA-606 E. Travel about 2.8 miles and turn right onto Lake Fairfax Drive which will lead you directly into the park.
  • Enter the park and follow the signs to check-in.


Race Your Bicycle!