Avg Temps f.


Gain/Loss in ft


Furthest Aid

~2 miles

Highest Elev.





Flat, road-like trail

Time Limit

6.5 hours



Longest Climb


Summary: Jack & Jill’s Downhill Marathon is a fast gentle downhill course on one of Washington’s most scenic trails.  After you pass through the Snoqualmie Tunnel, the next 23 miles are a gradual 2000 foot net drop down the John Wayne Trail on a hard-packed, shaded dirt/gravel road.

Race Details

Lessons Learned from Race Reports

  • After a half mile runners enter the pitch black tunnel for 2.4 miles. A light source such as a headlamp is strongly recommended and you can drop it with volunteers after the tunnel.
  • Be sure to review the information on parking and shuttles, as the start and finish are in different locations.
  • Chilly at the start since it’s higher in elevation
  • GPS watches often lose a signal in the tunnel and don’t give good feedback in there
  • Not tons of runners and not tons of spectators, so on your own for a lot of it
  • Wearing gaitors could be helpful in keeping the rocks out of your shoes, as it’s on a very crushed gravel course.


Total gain/loss: 15/2000

Total climbs: None

Map & Elevation profile

Aid stations

Total aid stations: 11

Furthest distance apart: ~2 miles

What’s available: All aid stations will be staffed and have water.  Gatorade and water will be provided at aid stations 3 – 10.  Each aid station will be equipped with a first aid kit and Medics will be at miles 8 and 16.

Crew access

Not a spectator-friendly course. Best place is at the finish line! Some information given here.

Race qualifiers


Race Reports

Strava activities and GPX files

Race Website