Jianjun Li

Bib: 31912 M CN

Masters

0:00

0:00

/ mi

Masters

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Overall

#0 / 26622

Gender (Male)

#0 / 15176

Masters (Masters Men)

#0 / 9891

Division (M50-54)

#0 / 2052

Race Day Weather

49°/39°F

light intensity drizzle

Race Timeline

Ribbon color based on

FasterSteadySlower· vs. your average pace

Start

0:00

Race begins

469 ft elev

5K· 3.11 mi

9:47/mi

30:24

↑ 97 ft↓ 345 ft1.5% grade

220 ft elev

10K· 6.21 mi

10:11/mi

1:02:03

↑ 79 ft↓ 138 ft0.4% grade

157 ft elev

15K· 9.32 mi

10:06/mi

1:33:26

↑ 67 ft↓ 78 ft

146 ft elev

20K· 12.43 mi

10:57/mi

2:07:27

↑ 106 ft↓ 86 ft0.1% grade

165 ft elev

Half· 13.11 mi

9:59/mi

2:14:16

↑ 19 ft↓ 37 ft0.5% grade

148 ft elev

25K· 15.53 mi

10:27/mi

2:39:36

↑ 66 ft↓ 88 ft0.2% grade

127 ft elev

30K· 18.64 mi

11:52/mi

3:16:29

↑ 181 ft↓ 148 ft0.2% grade

138 ft elev

20M

11:13/mi

3:31:44

↑ 64 ft↓ 50 ft0.2% grade

148 ft elev

21M

12:43/mi

3:44:27

↑ 106 ft↓ 24 ft1.6% grade

227 ft elev

35K· 21.75 mi

10:04/mi

3:51:59

↑ 17 ft↓ 86 ft1.7% grade

156 ft elev

23M

10:28/mi

4:05:05

↑ 23 ft↓ 63 ft0.6% grade

116 ft elev

24M

10:41/mi

4:15:46

↓ 82 ft1.3% grade

34 ft elev

40K· 24.85 mi

10:19/mi

4:24:35

↓ 20 ft0.3% grade

20 ft elev

25.2M

10:52/mi

4:28:20

↑ 13 ft↓ 16 ft0.2% grade

18 ft elev

Finish· 26.22 mi

9:57/mi

4:38:28

↑ 22 ft↓ 21 ft

17 ft elev

Course Elevation

7–469 ft

≈

×2stacked redwood trees

•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half

2:14:1610:15 /mi⚡ faster

2nd Half

2:24:1211:00 /mi+7.4%

Positive split — 7.4% slower in the second half

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See your splits, ranks & AI insights.

Checkpoint Splits

Checkpoint	Time	Avg Pace	Segment Length	Segment Time	Segment Pace	Diff
5K	30:24	9:47	3.11 mi	30:24	9:47	-
10K	1:02:03	9:59	3.10 mi	31:39	10:11	+0:24
15K	1:33:26	10:01	3.11 mi	31:23	10:06	-0:05
20K	2:07:27	10:15	3.11 mi	34:01	10:57	+0:51
Half(13.11 mi)	2:14:16	10:15	0.68 mi	6:49	9:59	-0:58
25K	2:39:36	10:16	2.42 mi	25:20	10:27	+0:28
30K	3:16:29	10:32	3.11 mi	36:53	11:52	+1:25
20M	3:31:44	10:35	1.36 mi	15:15	11:13	-0:39
21M	3:44:27	10:41	1.00 mi	12:43	12:43	+1:30
35K	3:51:59	10:40	0.75 mi	7:32	10:04	-2:39
23M	4:05:05	10:39	1.25 mi	13:06	10:28	+0:24
24M	4:15:46	10:39	1.00 mi	10:41	10:41	+0:13
40K	4:24:35	10:39	0.85 mi	8:49	10:19	-0:22
25.2M	4:28:20	10:39	0.35 mi	3:45	10:52	+0:33
Finish(26.22 mi)	4:38:28	10:38	1.02 mi	10:08	9:57	-0:55

Trend:

Faster pace

Steady pace

Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

9:47 /mi

Average Pace

10:38 /mi

Slowest Pace

12:43 /mi

Loading chart...

Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

47:21

17% of race

Time at Steady Pace

2:08:30

46% of race

Time at Slower Pace

1:42:37

37% of race

Average Pace: 10:37 /mi

Loading chart...

Faster pace (< avg)

Steady pace (≈ avg)

Slower pace (> avg)

Heatmap

0mi6.6mi13.1mi19.7mi26.2mi

Pace:

Faster

Steady

Slower

Checkpoint and Segment Rankings

Checkpoint	Seg. Dist	Overall	Males	M50-54	Seg. Overall	Seg. Males	Seg. M50-54
5K	3.11 mi	22868	13535	13535	23697	13953	13953
10K	3.10 mi	23590-722	13897-362	13897-362	24097	14134	14134
15K	3.11 mi	23656-66	13930-33	13930-33	23697	13953	13953
20K	3.11 mi	23931-275	14060-130	14060-130	24549	14299	14299
Half(13.11 mi)	0.68 mi	23890+41	14043+17	14043+17	23251	13737	13737
25K	2.42 mi	23729+161	13956+87	13956+87	23088	13628	13628
30K	3.11 mi	23890-161	14013-57	14013-57	24348	14137	14137
20M	1.36 mi	23833+57	13979+34	13979+34	23049	13489	13489
21M	1.00 mi	23844-11	13970+9	13970+9	23728	13765	13765
35K	0.75 mi	23765+79	13933+37	13933+37	21484	12711	12711
23M	1.25 mi	23638+127	13867+66	13867+66	21227	12568	12568
24M	1.00 mi	23588+50	13835+32	13835+32	22414	13075	13075
40K	0.85 mi	23513+75	13793+42	13793+42	20777	12281	12281
25.2M	0.35 mi	23458+55	13753+40	13753+40	20160	12006	12006
Finish(26.22 mi)	1.02 mi	23409+49	13720+33	13720+33	21606	12675	12675

12675

Passing Analysis

Category:

▼Net Change

0 passed by0 passed

Segment	Movement	Rank
Start → 5K	-	#22868
5K → 10K	75533-722	#22868 → #23590
10K → 15K	15892-66	#23590 → #23656
15K → 20K	31641-275	#23656 → #23931
20K → Half	950+41	#23931 → #23890
Half → 25K	15176+161	#23890 → #23729
25K → 30K	21857-161	#23729 → #23890
30K → 20M	1976+57	#23890 → #23833
20M → 21M	5847-11	#23833 → #23844
21M → 35K	281+79	#23844 → #23765
35K → 23M	7134+127	#23765 → #23638
23M → 24M	757+50	#23638 → #23588
24M → 40K	075+75	#23588 → #23513
40K → 25.2M	358+55	#23513 → #23458
25.2M → Finish	1160+49	#23458 → #23409
TOTALS	15781037-541	#22868 → #23409

Passing Visualized

Category:

Passing Circle

Position Flow

Race Lanes

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Results processed about 1 month ago

Public Race Data

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Race managed by

Boston Athletic Association

Race timed by

Mika Timing