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INSIGHTS: TWO HOURS OF PUMPING ON THE ULTRA TRAIL

Insights
Pumping

15 july 2025 1

Meet Charles who turned a dock start into a two-hour flight with his Kluber HDCC / Ultra Trail combo.

After previously setting a personal record of one hour and two minutes on the Sirus 3XL, young Charles Pimbel (60 kg) doubled it with two hours of glide on the Ultra Trail 4XL.

This was on his third attempt with his new Ultra Trail pumping setup after breaking his personal best by a minute in his two first attempts (1h03 and 1h04). Once he found his rhythm, he completely shattered his own record. He recounts the session for us.

Pump foiler: Charles with his Kluber HDCC, his Ultra Trail front wing and Veloce H stab.

Charles:

"To break the 2-hour pumping mark, my gear included a Kluber 80 HDCC, a HM72 V2 mast (equivalent to the HM70 19mm V3), a Veloce H XL V3 stabilizer, and of course the Ultra Trail 4XL wing—2000 cm² and 188 cm wingspan, a massive leap in long-distance pumping.

The Ultra Trail is truly a weapon when it comes to energy efficiency. It glides incredibly well, and its lightness makes it easy to fly high with almost no effort. Its low-speed range is really impressive; my average speed was 13 km/h. That’s crucial for me to avoid getting exhausted too quickly. The stability is excellent, which let me get far from the dock without worrying about falling.

Thanks to the V3 connection, there was absolutely no play even after two hours of pumping. I mounted the mast as far forward as possible on the Kluber—that’s the position that works best for me.

Despite 4.5 knots of wind and some chop on the lake, I started pumping upwind, alternating 3 pumps and 1 glide phase—or 5 pumps when I needed to gain speed. Coming back with the wind at my back, I used 3 pumps followed by longer glide phases. It was amazing and helped me rest a bit. After an hour, the wind dropped a little—it all felt much easier.

I kept going, and eventually the wind completely died, so it became pure joy: just 3 pumps and then maximum gliding, which really gave me some relief. After 2 hours of pumping and 26 km, my legs started hurting—it was time to stop.”