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BOSTON MARATHON 2023

Yan Li

Bib: 11863•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 37%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 41%
Division (M50-54)
#0 / 2052
Top 41%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:00
Rank: #8838
Start → 5K
23:00 | 7:24/mi
10K· 6.21 mi
45:59
Rank: #9180 (-342)
5K → 10K
22:59 | 7:24/mi
15K· 9.32 mi
1:08:41
Rank: #8968 (+212)
10K → 15K
22:42 | 7:18/mi
20K· 12.43 mi
1:31:54
Rank: #8961 (+7)
15K → 20K
23:13 | 7:28/mi
Half· 13.11 mi
1:36:57
Rank: #8979 (-18)
20K → Half
5:03 | 7:24/mi
25K· 15.53 mi
1:55:11
Rank: #8938 (+41)
Half → 25K
18:14 | 7:31/mi
30K· 18.64 mi
2:19:36
Rank: #9076 (-138)
25K → 30K
24:25 | 7:52/mi
20M
2:30:27
Rank: #9124 (-48)
30K → 20M
10:51 | 7:59/mi
21M
2:38:59
Rank: #9185 (-61)
20M → 21M
8:32 | 8:32/mi
35K· 21.75 mi
2:44:50
Rank: #9236 (-51)
21M → 35K
5:51 | 7:49/mi
23M
2:55:09
Rank: #9324 (-88)
35K → 23M
10:19 | 8:14/mi
24M
3:03:22
Rank: #9483 (-159)
23M → 24M
8:13 | 8:13/mi
40K· 24.85 mi
3:10:38
Rank: #9584 (-101)
24M → 40K
7:16 | 8:30/mi
25.2M
3:13:48
Rank: #9644 (-60)
40K → 25.2M
3:10 | 9:11/mi
Finish· 26.22 mi
3:22:43
Rank: #9963 (-319)
25.2M → Finish
8:55 | 8:45/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:57
Pace7:24 /mi
2nd Half
Distance13.11 mi
Time1:45:46
Pace8:04 /mi
📊Positive Split: 9.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:3123:007:2423:00
7:24
-
10K
6.21 mi11:16:3045:597:2422:59
7:24
0:00
15K
9.32 mi11:39:121:08:417:2222:42
7:18
-0:06
20K
12.43 mi12:02:251:31:547:2423:13
7:28
+0:10
Half
13.11 mi12:07:281:36:577:245:03
7:24
-0:04
25K
15.53 mi12:25:421:55:117:2518:14
7:31
+0:07
30K
18.64 mi12:50:072:19:367:2924:25
7:52
+0:21
20M
20.00 mi13:00:582:30:277:3110:51
7:59
+0:07
21M
21.00 mi13:09:302:38:597:348:32
8:32
+0:33
35K
21.75 mi13:15:212:44:507:355:51
7:49
-0:43
23M
23.00 mi13:25:402:55:097:3710:19
8:14
+0:25
24M
24.00 mi13:33:533:03:227:388:13
8:13
-0:01
40K
24.85 mi13:41:093:10:387:407:16
8:30
+0:17
25.2M
25.20 mi13:44:193:13:487:413:10
9:11
+0:41
Finish
26.22 mi13:53:143:22:437:448:55
8:45
-0:26

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

7:18 /mi

Average Pace

7:44 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:11

57% of race

Time at Steady Pace

41:07

20% of race

Time at Slower Pace

46:25

23% of race

Average Pace: 7:44 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:53:3123:007:2423:00
7:24
#8838
10K
6.21 mi11:16:3045:597:2422:59
7:24
#9180
15K
9.32 mi11:39:121:08:417:2222:42
7:18
#8968
20K
12.43 mi12:02:251:31:547:2423:13
7:28
#8961
Half
13.11 mi12:07:281:36:577:245:03
7:24
#8979
25K
15.53 mi12:25:421:55:117:2518:14
7:31
#8938
30K
18.64 mi12:50:072:19:367:2924:25
7:52
#9076
20M
20.00 mi13:00:582:30:277:3110:51
7:59
#9124
21M
21.00 mi13:09:302:38:597:348:32
8:32
#9185
35K
21.75 mi13:15:212:44:507:355:51
7:49
#9236
23M
23.00 mi13:25:402:55:097:3710:19
8:14
#9324
24M
24.00 mi13:33:533:03:227:388:13
8:13
#9483
40K
24.85 mi13:41:093:10:387:407:16
8:30
#9584
25.2M
25.20 mi13:44:193:13:487:413:10
9:11
#9644
Finish
26.22 mi13:53:143:22:437:448:55
8:45
#9963
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi8838749774978607(Top 32%)7316(Top 48%)7316(Top 357%)
10K6.21 mi3.10 mi9180-3427685-1887685-1889600(Top 36%)7928(Top 52%)7928(Top 386%)
15K9.32 mi3.11 mi8968+2127541+1447541+1448607(Top 32%)7316(Top 48%)7316(Top 357%)
20K12.43 mi3.11 mi8961+77525+167525+169099(Top 34%)7557(Top 50%)7557(Top 368%)
Half13.11 mi0.68 mi8979-187534-97534-99421(Top 35%)7771(Top 51%)7771(Top 379%)
25K15.53 mi2.42 mi8938+417501+337501+338919(Top 34%)7384(Top 49%)7384(Top 360%)
30K18.64 mi3.11 mi9076-1387550-497550-499811(Top 37%)7727(Top 51%)7727(Top 377%)
20M20.00 mi1.36 mi9124-487557-77557-710133(Top 38%)7821(Top 52%)7821(Top 381%)
21M21.00 mi1.00 mi9185-617561-47561-410657(Top 40%)7937(Top 52%)7937(Top 387%)
35K21.75 mi0.75 mi9236-517581-207581-2010763(Top 40%)7986(Top 53%)7986(Top 389%)
23M23.00 mi1.25 mi9324-887609-287609-2811440(Top 43%)8187(Top 54%)8187(Top 399%)
24M24.00 mi1.00 mi9483-1597683-747683-7412682(Top 48%)8697(Top 57%)8697(Top 424%)
40K24.85 mi0.85 mi9584-1017711-287711-2813281(Top 50%)8899(Top 59%)8899(Top 434%)
25.2M25.20 mi0.35 mi9644-607726-157726-1513455(Top 51%)8948(Top 59%)8948(Top 436%)
Finish26.22 mi1.02 mi9963-3197873-1477873-14716719(Top 63%)10475(Top 69%)10475(Top 510%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21stories
+97ft-345ft

Overall

8607

Males

7316

M50-54

7316

5K→10K

3.1 - 6.2 mi

Top 36%
×5stories
+79ft-138ft

Overall

9600

Males

7928

M50-54

7928

10K→15K

6.2 - 9.3 mi

Top 32%
×3stories
+67ft-78ft

Overall

8607

Males

7316

M50-54

7316

15K→20K

9.3 - 12.4 mi

Top 34%
×5stories
+106ft-86ft

Overall

9099

Males

7557

M50-54

7557

20K→Half

12.4 - 13.1 mi

Top 35%
×2stories
+19ft-37ft

Overall

9421

Males

7771

M50-54

7771

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

8919

Males

7384

M50-54

7384

25K→30K

15.5 - 18.6 mi

Top 37%
×9stories
+181ft-148ft

Overall

9811

Males

7727

M50-54

7727

30K→20M

18.6 - 20.0 mi

Top 38%
×5stories
+64ft-50ft

Overall

10133

Males

7821

M50-54

7821

20M→21M

20.0 - 21.0 mi

Top 40%
×8stories
+106ft-24ft

Overall

10657

Males

7937

M50-54

7937

21M→35K

21.0 - 21.8 mi

Top 40%
×7stories
+17ft-86ft

Overall

10763

Males

7986

M50-54

7986

35K→23M

21.8 - 23.0 mi

Top 43%
×5stories
+23ft-63ft

Overall

11440

Males

8187

M50-54

8187

23M→24M

23.0 - 24.0 mi

Top 48%
×6stories
+12ft-82ft

Overall

12682

Males

8697

M50-54

8697

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

13281

Males

8899

M50-54

8899

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

13455

Males

8948

M50-54

8948

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2stories
+22ft-21ft

Overall

16719

Males

10475

M50-54

10475

Passing Analysis

Category:
Athletes Passed
1102*
Passed By
2227
Net Change
-1125
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8838
5K → 10K134476-342#8838#9180
10K → 15K26755+212#9180#8968
15K → 20K129122+7#8968#8961
20K → Half2139-18#8961#8979
Half → 25K11473+41#8979#8938
25K → 30K128266-138#8938#9076
30K → 20M71119-48#9076#9124
20M → 21M61122-61#9124#9185
21M → 35K2677-51#9185#9236
35K → 23M57145-88#9236#9324
23M → 24M27186-159#9324#9483
24M → 40K31*132-101#9483#9584
40K → 25.2M2585-60#9584#9644
25.2M → Finish11330-319#9644#9963
TOTALS1102*2227-1125

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing