The 2008-09 Biathlon World Cup/Mass start Men will start on January 11, 2009 in Oberhof and will finish on March 29, 2009 in Khanty-Mansiysk at the final event of the season. The defending titlist is Ole Einar Bjørndalen of Norway.

In the mass start, all biathletes start at the same time; the first across the finish line wins. In this 15 kilometres (9.3 mi) competition, the distance is skied over five laps; there are four bouts of shooting (two prone, two standing, in that order) with the first shooting bout being at the lane corresponding to your bib (Bib #10 shoots at lane #10 regardless of position in race). The rest of the shooting bouts are at the lane of the position they arrived (Arrive at the lane in fifth place, shoot at lane five). As in sprint races, competitors must ski one 150 m penalty loop for each miss. Here again, to avoid unwanted congestion, World Cup Mass starts are held with only the 30 top ranking athletes on the start line (half that of the Pursuit as here all contestants start simultaneously).

Medal	Athlete	Points[1]
Gold:	Ole Einar Bjørndalen	180
Silver:	Nikolay Kruglov, Jr.	143
Bronze:	Dmitri Yaroshenko	128

Event:	Gold:	Time	Silver:	Time	Bronze:	Time
Oberhof details	Christoph Sumann  Austria	38:11.9 (1+0+1+0)	Carl Johan Bergman  Sweden	38:21.6 (0+0+1+1)	Ole Einar Bjørndalen  Norway	38:21.8 (0+1+1+0)
Antholz details	Christoph Stephan  Germany	37:19.9 (0+0+0+1)	Dominik Landertinger  Austria	37:20.1 (1+2+0+0)	Ivan Tcherezov  Russia	37:22.7 (0+0+1+1)
World Championships details	Dominik Landertinger  Austria	38:32.5 (2+0+0+1)	Christoph Sumann  Austria	38:41.4 (2+0+0+1)	Ivan Tcherezov  Russia	38:46.4 (2+0+0+0)
Trondheim details	Ole Einar Bjørndalen  Norway	41:12.9 (0+0+0+0)	Simon Eder  Austria	41:52.0 (0+0+1+0)	Emil Hegle Svendsen  Norway	42:06.3 (1+0+0+1)
Khanty-Mansiysk details	Simon Eder  Austria	37:14.4 (0+0+0+0)	Dominik Landertinger  Austria	37:26.5 (0+0+0+1)	Ole Einar Bjørndalen  Norway	37:31.4 (2+0+0+1)

#	Name	OBE	ANT	WCH	TRO	KHA	Total[2]
1	Dominik Landertinger	–	54	60	40	54	208
2	Ole Einar Bjørndalen	48	40	43	60	48	199
3	Christoph Sumann	60	43	54	18	40	197
4	Simon Eder	–	28	34	54	60	176
5	Ivan Tcherezov	–	48	48	43	31	170
6	Christoph Stephan	19	60	20	38	28	146
7	Emil Hegle Svendsen	43	–	29	48	26	146
8	Maxim Tchoudov	40	38	36	28	23	142
9	Carl Johan Bergman	54	20	14	36	27	137
10	Tomasz Sikora	28	36	38	25	32	134
11	Michael Roesch	36	22	40	16	34	132
12	Simon Fourcade	29	29	32	15	38	128
13	Daniel Mesotitsch	25	34	16	26	29	114
14	Andriy Deryzemlya	38	27	18	23	25	113
15	Halvard Hanevold	34	15	28	14	36	113
16	Björn Ferry	27	26	–	27	30	110
17	Andrei Makoveev	31	–	17	19	22	89
18	Alexander Wolf	17	30	–	22	19	88
19	Christian De Lorenzi	30	13	31	12	11	86
20	Vincent Jay	26	–	–	32	24	82
21	Markus Windisch	15	23	25	13	16	79
22	Friedrich Pinter	–	25	–	31	21	77
23	Alexander Os	12	31	–	20	13	76
24	Lars Berger	24	18	12	21	12	75
25	Martin Fourcade	–	–	26	29	18	73
26	Michael Greis	–	24	0	34	14	72
27	Roman Valiullin	21	21	–	11	15	68
28	Michal Šlesingr	–	14	–	30	20	64
29	Andreas Birnbacher	20	–	–	–	43	63
30	Tim Burke	–	–	13	17	17	47
31	Jean Philippe Leguellec	–	19	–	24	–	43
32	Nikolay Kruglov, Jr.	22	16	–	–	–	38
33	Tobias Eberhard	–	32	–	–	–	32
35	Sergey Novikov	32	–	–	–	–	32
35	Janez Maric	–	–	30	–	–	30
36	Jay Hakkinen	13	17	–	–	–	30
37	Klemen Bauer	–	–	27	–	–	27
38	Simon Hallenbarter	–	–	24	–	–	24
39	Roman Pryma	23	–	–	–	–	23
39	Lowell Bailey	–	–	23	–	–	23
41	Jakov Fak	–	–	22	–	–	22
42	Mattias Nilsson	–	–	21	–	–	21
43	David Ekholm	–	–	19	–	–	19
44	Ronny Hafsas	18	–	–	–	–	18
45	Vincent Defrasne	16	0	–	–	–	16
46	Magnús Jónsson	–	–	15	–	–	15
47	Vyacheslav Derkach	14	–	–	–	–	14