Udjusted Castle Photo

Event Summary

TheWellington SwimRun Challenge will be held the Sunday following the Castle 2.5/5/10K race.  It will be on Sunday August 25, 2024. This race is being offered to provide swimmers one last swim for the year and an opportunity to do a fun race after a night of camping under the stars.  It is 5K in length and consists of two laps. We hope you enjoy.


What: Wellington SwimRun Challenge

Where: Wellington Reservoir, Bailey, CO

When: Sunday August 25, 2024 - 8:00 AM

Pre-Registration Closes: REGISTRATION IS NOW OPEN

  • Regular Registration Pricing* - $70

Tee shirt not guaranteed for registrants after August 9, 2024

Registration Closes Wednesday August 21, 2024 - 11:59 PM


Per Lap = 0.3 M Swim, 1.6 K Run

Total: 3 Laps = 1 Mile Swim, 5K Run

Time cut-offs:
All swimmers must be capable of completing the distance you have entered and must be able to complete your respective event within the given cut-off time.

2 hours

Countdown to Event:

7 7 7 7
1 1 1 1
0 0 0 0
1 1 1 1
1 1 1 1
0 0 0 0
4 4 4 4
4 4 4 4


The race will start as a mass in-water "wet" start.

All packet pickup will be the morning of the race.  Please plan to come and pick up your packets early!

Swimmers may choose to swim with their shoes, paddles, a wetsuit, pull buoy, floaties, rubber duckies, inflatable flamingoes or any other nonmotorized swim aid in this event.



6:00am - packet pickup begins
7:30am - packet pickup closes
7:45am - swimmer safety meeting
8:00am - Race Starts
10:00am - Time Cutoff
10:15am -- Awards and giveaways


We will have a single large start with all swimmers leaving simultaneously.

Packet Pickup will be the evening before at the Royal Elk Meadows Camping area at Wellington Lake and between 6:00 and 7:15 on the morning of the swim.

Timing will be performed using traditional number, and stopwatch, in addition to a clock.  There will not be electronic chip timing at this event.

Cellular service at the lake is spotty.  Be prepared with directions and knowledge of the campsites, parking areas, event location and directions to/from event beforehand. 

An approximately 2/3-mile walk from your car parking area to the start/finish area will be required.  PLEASE COME PREPARED AND GIVE YOURSELF ENOUGH TIME TO WALK (15 MINUTES +/-).

Race Course

Castle SwimRun Route



During registration, participants will have the option to reserve a camping site in the Royal Elk Meadows camping area.  These sites are available if participants would like to spend the night at the venue before the swim. Up to 4 persons will be allowed to stay at a campsite.  These people should be from the same group. The costs associated with the camping site reservations are separate from the regular registration fees.  Camping site reservation fees are $50 per site for a single night (e.g. Friday OR Saturday) or $75 for both nights. Campers will need to clean around and pack up their sites no later than 2:00PM on Saturday if leaving Saturday day and by noon on Sunday if staying on Saturday night. During check-in, campers will be required to present proof that at least one member of each campsite intends on swimming.  Spectators may not reserve campsites.  Spectator camping is available 90 days before the event at https://www.castlemountainrec.com/campsites.  Campers will be assigned a camping spot.  The campsites are near the parking area, so there will be parking and race organization activities the morning of the swim. Please do not camp in the parking area, which will be blocked off with tables/signs/logs/etc.

We do not permit tow-behind campers or RVs (sorry, no exception). This is because there is limited room and the road is narrow and if we let 1 in, we would have let others in.  If there were many of these, egress for parking or camping could be an issue in the event of a fire or other emergency.  Thank you for understanding. If you plan to camp, "truck-bed" campers, or tents are great options. We ask that you respect the area and the people around you, as the camping is surrounded by Colorado's beautiful Pike National Forest, which is public land.  Please avoid leaving trash and do not cut down trees for firewood.  Please leave the area in the same condition as you found it.

Campers should drive past the main office, across the dam, and take the first right to go through the swing gate.  At the fork in the road, take a left.  After arriving, campers should go to the camping registration table before setting up camp.

Camping check-in will be from 2:00 to 7:00 on Friday and on Saturday.


From Denver: Take Highway 285 South to Bailey. Turn left on Wellington Lake RD (first major left at the bottom of the hill).  Follow the road for approximately 5 miles and go past the main office and over the dam.  Drive past the lake and up the small hill.  On the right, there will be a gate.  Go through the gate.  At the fork in the road, take a left to go towards parking and camping.  Follow the signs.

After parking, you will need to walk approximately 2/3 mile to get to the start.  The walk from the parking area to the start of the swim is approximately 2/3 mile and takes 15-20 minutes.  To get to the start walk back out the road you entered until you reach the fork in the road.  Stay to the left (do not go back out the way you drove in) and go down the dirt road.  The swim will be on the right near the bottom of the hill at the lake.

Please note that participant vehicles will not be permitted to drive to the start point and must park in the designated parking area or at their reserved campsites.

Overall, assume that the drive will take 2 hours to reach the lake from Denver and that the walk will take an additional 15 minutes, after parking.

This race will take place at Wellington Lake: www.castlemountainrec.com

            Address: 21843 Stoney Pass Rd, Bailey, CO 80421
            Phone: 303-838-5496

Wellington Lake is ~45 minutes from the small town of Conifer, with dirt road access. You don’t need 4-wheel drive to access the lake, but a Prius will have a harder time getting there than other types of vehicles. There are potholes.


*Does not include 6.25% + $1.95 online registration fee.

Note: As of January 31, 2024, race and camping fees were increased due to increased permit and venue fees.