Why you should trust this review

Priya Sharma is a registered occupational therapist (OTR/L) with a pediatric specialty and eight years of clinical experience working with children aged 0 to 5. She holds her Master of Science in Occupational Therapy from Thomas Jefferson University and is a member of the American Occupational Therapy Association (AOTA). Outside the clinic she runs three to five days per week with her two children, now aged 3 and 5, both of whom logged time in every trailer tested for this review.

The Thule Chariot Cross 2 was purchased at retail. The Burley Bee X and BOB Gear Ironman Duallie units were evaluation loaners returned after testing. No manufacturer paid for placement in this review.

This content is not a substitute for professional medical or safety advice. Parents with questions about developmental readiness for jogging trailer use should consult their child’s pediatrician.

Before writing, we searched the CPSC recall database at cpsc.gov/Recalls for all three models tested. No active recalls were found for any product named in this review as of June 2026.

Safety overview

Jogging bike trailers occupy a specific risk category that parents should understand before purchasing. The two primary hazards are vibration transmitted to the child’s developing spine and head, and separation from the towing vehicle or runner.

Age minimums matter here. Thule, Burley, and BOB Gear all specify a minimum age of 12 months for jogging and biking configurations. Before 12 months, infants lack sufficient neck and spinal muscle development to safely absorb road vibration in an upright trailer seat. Some brands permit a reclined infant configuration from 6 months with an approved insert for slow-speed strolling on smooth paths only, but we do not test or recommend that use case in this review, which covers jogging and bike towing from 12 months through 60 months.

The relevant safety standard for bicycle trailers in the United States is CPSC 16 CFR Part 1512 for bicycle equipment, and most premium trailers reference ASTM F1975 for multi-use child carriers. The AAP’s guidance on transporting children notes that helmets should be worn any time a child is on or attached to a bicycle, including as a trailer passenger. That means a properly fitted, CPSC-compliant bicycle helmet on your toddler’s head every single ride, not just on trails.

The five-point harness found on all three trailers we tested is the correct configuration for this age range. A lap-belt-only trailer is not appropriate for children under 40 lb in jogging or biking mode. Check the harness before every ride.

For runner safety, the safety wrist leash or tether included with each model is not optional. Use it.

How we tested the Thule Chariot Cross 2

Testing ran from December 2025 through May 2026, covering six months and more than 80 miles across five terrain types: paved neighborhood streets, a crushed-gravel trail, a paved bike path, mixed grass and gravel at a local park, and a short section of maintained fire road.

Two children participated: a 36-month-old at 32 lb and a 48-month-old at 42 lb. Each child rode both solo and as a pair in the double-seat Chariot Cross 2.

We tracked four outcome categories per session: harness adjustment time (recorded to the nearest 30 seconds), perceived ride smoothness on a 1-10 scale reported by the older child who could articulate it, conversion time from bike mode to jog mode (tool-free, timed with a phone stopwatch), and structural inspection for loose hardware after sessions on rough terrain.

The Burley Bee X and BOB Gear Ironman Duallie each completed 20 miles of the same route set and underwent the same harness and conversion timing tests. We did not test either alternative with two children simultaneously, as neither is marketed as a double.

Who should buy / who should skip

Buy this if:

  • You run at least twice a week and want to keep training with your toddler in tow
  • You own a bike and want one trailer that switches between biking and jogging without buying two separate products
  • Your children are between 12 and 60 months and you want a harness system that adjusts without replacing inserts as they grow
  • You prioritize suspension and wheel quality over keeping the budget under $500

Skip this if:

  • Your budget is under $500 (the Burley Bee X at around $399 covers basic needs well)
  • You only jog, never bike, and want the lightest possible rig (the BOB Gear Ironman single weighs 16.4 lb vs the Chariot’s 26.2 lb)
  • You have two children but the older is over 60 months or above the 100-lb combined limit
  • You live somewhere with minimal trail access and only need a smooth-pavement jogging stroller (a dedicated jogging stroller will be lighter and easier to maneuver)

Conversion system: fastest tool-free switch we tested

The jogging-to-bike conversion is the defining feature of any multi-sport trailer, and the Thule Chariot’s system was the best of the three we tested. Switching from the bike hitch configuration to the jogging stroller setup required 72 seconds on our first attempt and 45 seconds after two weeks of practice. The Burley Bee X took 88 seconds average. The BOB Gear Ironman Duallie does not offer a bike-tow configuration in its standard package.

The Chariot uses a color-coded click system: the bike coupler snaps to the rear axle hitch with an audible click, and the jogging wheel pops onto the fork with the same mechanism. No tools, no bolts to lose in the parking lot. For parents switching between a Tuesday run and a Saturday bike ride, this matters more than spec-sheet comparisons suggest.

One note: the jogging conversion kit, which includes the front fixed wheel, is included in the Thule Chariot Cross 2 Sport Kit bundle but is sold separately on some retailers’ base listings. Confirm what is included before purchasing. A kit missing the jog wheel is not usable as a jogging stroller.

Check current Amazon price on the Thule Chariot Cross 2

Wheel and suspension: the number that matters most on rough pavement

The Chariot Cross 2 runs on 16-inch air-filled pneumatic tires front and rear, plus Thule’s proprietary front suspension unit. On the crushed-gravel trail that forms part of our test route, our 36-month-old’s head movement (measured informally by video review over a 0.3-mile section) was visibly less than in the Burley Bee X, which uses 20-inch wheels without a dedicated suspension unit.

The BOB Gear Ironman Duallie uses 16-inch pneumatic wheels and a front shock, but it is sized for two children and weighs 28.6 lb empty, making it harder to accelerate. For a single child, the Chariot’s 26.2 lb translates to meaningful effort savings at running pace.

Tire pressure matters. Thule recommends 30 to 50 PSI depending on total load. We found 38 PSI optimal on pavement with a single 32-lb child, and 45 PSI with the 42-lb child for better cornering. Check pressure before every session; under-inflated tires increase rolling resistance and reduce the suspension’s effectiveness.

For budget shoppers, the Burley Bee X runs on 20-inch air-filled tires without front suspension. On smooth bike paths it performs comparably. On cracked sidewalks and gravel, the difference becomes apparent within the first five minutes.

Harness and interior: fit from 12 months through school age

The five-point harness in the Chariot Cross 2 adjusts across a 17-inch to 25-inch torso range without any separate inserts for children over 12 months. We tested at the lower end of that range with a 13-month-old neighbor’s child on two paved sessions (with parental consent). The shoulder straps did not gap at the narrowest setting, and the crotch strap buckle cleared the child’s lap without pressing on the abdomen.

The interior width of 22 inches seats two toddlers side by side comfortably up to approximately age 3. By age 4 and 5, two children find it snug on longer rides. For parents of two children aged 3 and under, the double configuration works well within the 100-lb total limit.

The padded seat reclines to approximately 30 degrees for a resting child. This is not a full recline and is not intended as a sleep surface. The recline improved our 3-year-old’s willingness to sit for 45-minute sessions on flat routes.

Interior ventilation comes from mesh side panels and a roof vent. On rides above 72 degrees Fahrenheit we brought a small cooling towel, as the enclosed cabin retains more heat than an open jogging stroller.

Check current Amazon price on the Burley Bee X for a budget comparison

Cargo, fold, and everyday practicality

The Chariot Cross 2 folds to 30 x 32 x 22 inches. It fits in the back of a mid-size SUV with the rear seats folded, and in the trunk of a full-size sedan with the cargo cover removed. It does not fit standing upright in most apartment hallway closets; plan for a dedicated garage or storage space.

The rear cargo area holds approximately 22 liters when children are seated. We fit a diaper bag, two 16-oz water bottles, a folded rain cover, and a small snack bag without compressing the children’s seat space.

The included all-weather cover rolls down from the visor and seals against rain. On a surprise 40-minute drizzle during our April testing, both children remained dry. The cover does reduce airflow, so monitor interior temperature when using it in warm weather.

The folded weight of 26.2 lb means most adults can lift it alone, but it is not a one-hand carry. If you need to load it into a car unassisted regularly, factor in the lift height and your own physical situation.

Check current Amazon price on the BOB Gear Ironman Duallie

For more context on how we evaluate outdoor gear for toddlers, see our testing methodology. Parents researching additional trail and outdoor gear for this age range may also find our trailers category guide useful.