A second step can achieve about 250 km traveled on the road, half in Mtb
Every 250 km road (125 km MTB )
Wash the bike, clean front and rear derailleur and brake body. Clean and lubricate the chain, check the wear on the brake pads and adjust the travel of the brake levers. Check the synchronization of front and rear derailleurs, check the alignment of the rim.
In addition to the above checks, check that there are no cracks in the bottom bracket and headset. Check seals for proper O-ring suspension, lubricate link rear suspension.