New Years Eve 5k, 10k, 15k, Half Marathon

Celebrate New Year's Eve at the New Year's Eve 5k, 10k, 15k, or Half Marathon at Hidden Valley Nature Center in Riverside on December 31, 2026. Scenic Santa Ana River course. Register with ABWR!  8AM start time.

As we run to ring in the new year at Hidden Valley, consider supporting its recovery. This beloved wildlife area needs our help rebuilding after the fire.  Join us in supporting fire recovery here -- https://www.gofundme.com/f/support-fire-recovery-for-hidden-valley-wildlife-area?attribution_id=sl:7935e8e2-e288-4812-8f54-18b0ad660058&lang=en_US&ts=1782335010&utm_campaign=fp_sharesheet&utm_content=amp20_t1&utm_medium=customer&utm_source=copy_link  

Included in registration — 

- custom finisher medals

- drawstring goodie bags

- free videos

- live results the moment you finish 

- free photos found by your bib · cinematic race highlight reels · trophies & achievement badges as you hit milestones · your Ascend Index ranking across every race · Ascend Crew to follow friends & chase their times

- FREE A Better World Running APP to keep track of all your races, photos and videos

- assortment of snacks, samples

- friendly, relaxed, fun, and personal racing experience for all levels and abilities 

- affordable cost and fun for the whole family! 

Start - 8:00AM

Bib pick up - 7:00-8:00AM on Sunday Dec 31st

Date - Thursday, December 31st. 2026​

Address - Hidden Valley Nature Center 11401 Arlington Ave, Riverside, CA 92505

Google Maps - https://maps.app.goo.gl/EwTYV1nfs8FZsnnD8

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Included in registration — 

- custom finisher medals

- drawstring goodie bags

- free videos

- live results the moment you finish 

- free photos found by your bib · cinematic race highlight reels · trophies & achievement badges as you hit milestones · your Ascend Index ranking across every race · Ascend Crew to follow friends & chase their times

- FREE A Better World Running APP to keep track of all your races, photos and videos

- assortment of snacks, samples

- friendly, relaxed, fun, and personal racing experience for all levels and abilities 

- affordable cost and fun for the whole family! 

NO REFUNDS  NO BANDITS PLEASE

This is an open course.  Please be courteous to other pedestrians, runners, and cyclists on the shared path.

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Course map: The course is super easy to follow.  It will consist of out and back loops on the path that will be marked.

* 5k out and back route  - https://www.mapmyrun.com/routes/view/6767252437

* 10k  2 x 5k loops

* 15k 3 x 5k loops 

* Half marathon 3 x 4.36 mi loop - https://www.mapmyrun.com/routes/view/6767253509

There are park restrooms and portable restrooms near the start/finish/check in area.  

* Aid station is at the turn around at the start/finish has water cups, water bottles, Gatorade cups, Gu gels.

Start - 8:00AM

Bib pick up - 7:00-8:00AM on Sunday Dec 31st

Date - Thursday, December 31st. 2026​

Address - Hidden Valley Nature Center 11401 Arlington Ave, Riverside, CA 92505

Google Maps - https://maps.app.goo.gl/EwTYV1nfs8FZsnnD8

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Start Map - Please see images below 

Parking -  There is $6 parking at the Nature Center, or free parking across the street in the dirt overflow lot, please check the signs and instructions where you park