Professional BioThane® Tracking Line

Heavy-Duty BioThane® Tracking Line Built for Serious Work When reliability matters most, every detail counts. The Professional Tracking Line is our strongest long line, built specifically for handlers who demand dependable performance during tracking, trailing, scent work, and advanced training. Constructed from rugged 3/4" Super Heavy BioThane, it delivers exceptional durability, a substantial feel in hand, and the confidence to perform in demanding environments. Unlike traditional long lines, the Professional Tracking Line is intentionally built without a handle, reducing the risk of snagging on brush, roots, fences, or other obstacles while your dog works. For handlers who prefer a handle, one can be added as an optional upgrade. Designed for professionals. Built to last. Beyond the Donation Every Bolder K9 purchase supports our Beyond the Donation program, where we go beyond traditional giving by combining financial support with hands-on volunteer work for dogs and their people. Learn more → Purpose-Built for Tracking Every feature of the Professional Tracking Line serves a purpose. Ideal for: Tracking and trailing Scent detection training Search and Rescue training Advanced obedience Recall training Working dog applications The handle-free design allows the line to move smoothly across varied terrain without unnecessary snags, giving your dog the freedom to work while keeping you connected. For handlers who want the versatility of a traditional long line, an optional handle can be added before checkout. Super Heavy BioThane Construction Built from 3/4" Super Heavy BioThane, this line offers increased weight and durability compared to our standard Beta BioThane long lines. Benefits include: Waterproof construction Odor-resistant material Easy to clean Flexible in wet and cold conditions Excellent abrasion resistance Designed for years of demanding outdoor use Whether you're working through tall grass, dense woods, muddy fields, or rough terrain, Super Heavy BioThane is built to handle repeated use without absorbing water or odors. Our Strongest Long Line Strength isn't just about the material—it's about how everything comes together. Every Professional Tracking Line is assembled using TEX 135 bonded thread, an industrial-grade thread chosen for its exceptional strength and durability. To further protect the highest-wear areas, every stitched connection is wrapped in durable PVC, shielding the stitching from abrasion, moisture, and everyday wear. The result is our strongest and most durable long line, built for years of reliable service in demanding conditions. Premium Hardware Every Professional Tracking Line features: Heavy-duty clasps TEX 135 bonded thread at connections Protective PVC-wrap over stitches We recommend using solid brass or stainless steel hardware for its corrosion resistance, long-term reliability, and proven performance in outdoor environments. Carabiners and frog clips are close options if you are looking for a lighter weight long line. Designed for Demanding Conditions Tracking doesn't happen on clean sidewalks. Your equipment should be ready for mud, water, brush, rocks, and everything in between. The Professional Tracking Line is designed to wipe clean after every session while maintaining the flexibility and handling characteristics that make BioThane a favorite among professional handlers. Less time cleaning gear. More time working dogs. Optional Handle Upgrade Traditional tracking lines are typically built without handles to prevent them from catching on obstacles while the dog works. If you'd like the versatility of a handle for everyday training or hiking, you can add one as an optional upgrade before checkout. Choose the configuration that best fits how you train. Built for Working Dogs—and the People Behind Them Whether you're training a young prospect, running tracking exercises, working Search & Rescue, or spending weekends on scent trails, the Professional Tracking Line is built to be a dependable part of your kit. It's not designed to be flashy. It's designed to work. From premium materials to reinforced construction, every detail reflects the same philosophy that guides all Bolder K9 gear: build it once, build it right, and build it to last.