Opportunities

The Ouachita River Challenge combines paddling, biking and running.

The Angel One 5K and 10K will begin at 8 a.m. Saturday at Two Rivers Park in Little Rock.

Online registration is available until noon Wednesday. The 5K costs $25, and the 10K is $35. Race-day registration will be available from 6 to 7:20 a.m. for an extra $5. Online registrants will receive a T-shirt; raceday registrants will receive T-shirts while they last.

Packet pickup will be from 6 a.m. to 6 p.m. Friday at Arkansas Children’s Hospital’s East Campus Fitness Center, 1 Children’s Way.

All participants will receive finisher medals. Awards will be given to the overall fastest runners and by age group.

Race proceeds will be used to buy gas cards to help families travel for their child’s treatment.

For registration and more information, visit angelonerun.com.

Slaughter Pen Jam Mountain Bike Festival

The Slaughter Pen Jam Mountain Bike Festival will be Friday through Sunday in and around Bentonville.

Online registration is available until 9 a.m. Saturday for $15 to $40, depending on the event and category. Friday night’s events will be in Bentonville’s Downtown Square. Saturday and Sunday’s events will be at Slaughter Pen Hollow Park.

On-site registrations will be open Saturday and Sunday for an extra $5. All participants will need a USA Cycling annual or one-day license.

For more information, visit slaughterhousejam.com.

Ouachita River Challenge

The Ouachita River Challenge will begin at 10 a.m. Saturday at ORBI Rentals, 2115 Tanner St. in Malvern.

It is structured as a triathlon with a six-mile float, 20K bike ride and a 5K run.

Online registration is available until Thursday for $75. Racers can register as individuals or as a team of three, one person for each leg.

Race-day registration and checkin will be 7:30 to 9 a.m. Saturday at ORBI Rentals.

Participants will be shuttled to the base of Remmel Dam to begin the float down the Ouachita River back to ORBI.

The 20K ride will be an out-andback on Arkansas 84, and the 5K will be an out-and-back on Haltom Road.

Participants are welcome to take kayaks, or rentals will be available from ORBI.

This event is part of a series of races organized by Hot Spring County nonprofit Arkansas Getting Everyone Outside, which, according to the website, was organized in 2015 to inspire Arkansans to become more active by engaging in outdoor activities. Money raised will be used to provide scholarships for children and adults who wish to participate in outside events such as camps, trips or by completing a college degree with an outdoor focus. For more information, visit arkansasgettingeveryoneoutside.com.

For online registration, visit runsignup.com and search for “Ouachita River Challenge.”

Race 13.1 Half Marathon, 10K, 5K

The Race 13.1 traveling race company will revisit Little Rock on Sunday for the third time. The halfmarathon will begin at 7 a.m., and the two shorter races will begin just after at 7:15.

All three will start and finish at the Clinton Presidential Center, 1200 President Clinton Ave.

The deadline for a guaranteed event T-shirt and lower price is midnight tonight. The half-marathon costs $85; the 10K is $39; and the 5K is $29. After midnight, the halfmarathon will cost an extra $5, and each of the shorter races will cost an extra $6. Online registration will continue until race day.

Packet pickup will be from 2 to 6 p.m. Saturday at Fleet Feet Sports Easy Runner, 11525 Cantrell Road in Little Rock. A photo ID is required for packet pickup.

Registration and race-day packet pickup will be from 5:15 to 6:15 a.m. Sunday at the starting line.

Registration includes a race Tshirt (while supplies last for registrants after today); a virtual swag bag that includes discounts at restaurants and retail stores; and everyone who completes the half-marathon will receive a finishers medal. Walkers are welcome, but strollers are not allowed. All participants must be off the course by 10:30 a.m.

This writer ran Race 13.1 last year, and will run it again this year. I don’t like to use words like “exact,” but the course is extremely similar to its earlier incarnations. All three distances will be primarily flat, with a couple of small hills. Following an out-and-back style, all three distances will cross over the Clinton Presidential Park Bridge before heading up the Arkansas River Trail on the North Little Rock side to Burns Park.

Each of the three distances will be color-coded with signs indicating turnarounds for the return trip to the Clinton Presidential Center.

Runners will be chip-timed. Awards will be given to the fastest male and female athletes overall and by age group. Awards for the 5K and 10K will be announced at 9 a.m., and half-marathon awards will be presented at 10. The top three overall in the half marathon, and the top runner in the 5K and 10K will get gift cards.

The charity partner for the Little Rock race is Big Brothers Big Sisters of Central Arkansas, whose mission statement, according to its website, is to provide children facing adversity with strong and enduring, professionally supported 1-to-1 relationships.

Participants who would like to donate directly to Big Brothers Big Sisters of Central Arkansas have that option during registration. More information is at bbbsca.org.

Live participant tracking is offered through the SpotRacer mobile app.

Registration and course maps are at race131.com.