Marquez menjadi yang tercepat dengan catatan terbaik 1 menit 41,808 detik. Sementara Pedrosa berada di urutan kedua dengan catatan terbaik lebih lambat 0,210 detik dari Marquez.
Pebalap Movistar Yamaha, Jorge Lorenzo, menjadi tercepat keempat. Sementara rekan satu timnya, Valentino Rossi, menjadi tercepat kedelapan.
Para pebalap akan kembali ke lintasan untuk menjalani sesi latihan bebas kedua pada Jumat siang waktu setempat (malam WIB).
Berikut hasil sesi latihan bebas pertama GP Catalunya.
1. Marc Marquez ESP Repsol Honda Team (RC213V) 1m 41.808s [Lap 16/17] 341km/h (Top Speed)
2. Dani Pedrosa ESP Repsol Honda Team (RC213V) 1m 42.018s +0.210s [18/21] 340km/h
3. Aleix Espargaro ESP Team Suzuki Ecstar (GSX-RR) 1m 42.183s +0.375s [16/16] 332km/h
4. Jorge Lorenzo ESP Movistar Yamaha MotoGP (YZR-M1) 1m 42.458s +0.650s [7/17] 339km/h
5. Maverick Viñales ESP Team Suzuki Ecstar (GSX-RR)* 1m 42.555s +0.747s [15/18] 332km/h
6. Yonny Hernandez COL Octo Pramac Racing (Desmosedici GP14.2) 1m 42.594s +0.786s [13/17] 342km/h
7. Nicky Hayden USA Aspar MotoGP Team (RC213V-RS) 1m 42.623s +0.815s [16/19] 331km/h
8. Valentino Rossi ITA Movistar Yamaha MotoGP (YZR-M1) 1m 42.938s +1.130s [6/19] 335km/h
9. Andrea Dovizioso ITA Ducati Team (Desmosedici GP15) 1m 42.945s +1.137s [5/18] 342km/h
10. Cal Crutchlow GBR CWM LCR Honda (RC213V) 1m 42.957s +1.149s [5/18] 341km/h
11. Andrea Iannone ITA Ducati Team (Desmosedici GP15) 1m 42.981s +1.173s [15/18] 345km/h
12. Scott Redding GBR Estrella Galicia 0,0 Marc VDS (RC213V) 1m 43.002s +1.194s [16/23] 337km/h
13. Karel Abraham CZE Cardion AB Motoracing (RC213V-RS) 1m 43.008s +1.200s [17/18] 328km/h
14. Pol Espargaro ESP Monster Yamaha Tech 3 (YZR-M1) 1m 43.116s +1.308s [4/18] 337km/h
15. Bradley Smith GBR Monster Yamaha Tech 3 (YZR-M1) 1m 43.378s +1.570s [21/21] 337km/h
16. Stefan Bradl GER Athina Forward Racing (Forward Yamaha) 1m 43.536s +1.728s [18/19] 335km/h
17. Hector Barbera ESP Avintia Racing (Desmosedici GP14 Open) 1m 44.059s +2.251s [13/14] 338km/h
18. Eugene Laverty IRL Aspar MotoGP Team (RC213V-RS)* 1m 44.062s +2.254s [16/21] 330km/h
19. Jack Miller AUS CWM LCR Honda (RC213V-RS)* 1m 44.357s +2.549s [16/19] 333km/h
20. Loris Baz FRA Athina Forward Racing (Forward Yamaha)* 1m 44.594s +2.786s [14/16] 326km/h
21. Danilo Petrucci ITA Octo Pramac Racing (Desmosedici GP14.1) 1m 44.603s +2.795s [4/17] 334km/h
22. Alvaro Bautista ESP Factory Aprilia Gresini (RS-GP) 1m 44.676s +2.868s [15/19] 331km/h
23. Mike Di Meglio FRA Avintia Racing (Desmosedici GP14 Open) 1m 44.768s +2.960s [14/15] 338km/h
24. Alex De Angelis RSM E-Motion IodaRacing (ART) 1m 44.865s +3.057s [15/17] 325km/h
25. Marco Melandri ITA Factory Aprilia Gresini (RS-GP) 1m 45.270s +3.462s [16/17] 332km/h
Official Catalunya MotoGP records:
Best lap:
Dani Pedrosa SPA Honda 1m 40.893s (2013)
Fastest race lap:
Marc Marquez SPA Honda 1m 42.182s (2014)