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BOSTON MARATHON 2026

Shengjun Li

Bib: 9444 •M •Age: N/A

VA

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 21%
Gender (Male)
#0 / 16340
Top 33%
Masters (Masters Men)
#0 / 10617
Top 18%
Age Group (M45-49)
#0 / 2413
Top 25%
Race Day Weather
51°/41°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
21:25
3.11 mi
Rank: #7677
Start → 5K
21:25 | 6:54/mi
10K
42:29
6.21 mi
Rank: #7238 (+439)
5K → 10K
21:04 | 6:47/mi
15K
1:03:35
9.32 mi
Rank: #7048 (+190)
10K → 15K
21:06 | 6:48/mi
20K
1:24:33
12.43 mi
Rank: #6650 (+398)
15K → 20K
20:58 | 6:45/mi
HALF
1:29:04
13.11 mi
Rank: #6583 (+67)
20K → HALF
4:31 | 6:38/mi
25K
1:45:27
15.53 mi
Rank: #6383 (+200)
HALF → 25K
16:23 | 6:46/mi
30K
2:06:58
18.64 mi
Rank: #6127 (+256)
25K → 30K
21:31 | 6:56/mi
20M
2:16:33
20.00 mi
Rank: #6101 (+26)
30K → 20M
9:35 | 7:04/mi
21M
2:23:55
21.00 mi
Rank: #6068 (+33)
20M → 21M
7:22 | 7:22/mi
35K
2:28:59
21.75 mi
Rank: #6037 (+31)
21M → 35K
5:04 | 6:47/mi
23M
2:37:51
23.00 mi
Rank: #6015 (+22)
35K → 23M
8:52 | 7:06/mi
24M
2:44:45
24.00 mi
Rank: #5976 (+39)
23M → 24M
6:54 | 6:54/mi
40K
2:50:56
24.85 mi
Rank: #6013 (-37)
24M → 40K
6:11 | 7:14/mi
25.2M
2:53:34
25.20 mi
Rank: #6007 (+6)
40K → 25.2M
2:38 | 7:39/mi
FINISH
3:00:31
26.22 mi
Rank: #5990 (+17)
25.2M → FINISH
6:57 | 6:50/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:29:04
Pace6:48 /mi
2nd Half
Distance13.11 mi
Time1:31:27
Pace6:59 /mi
📊Positive Split: 2.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:37:1021:256:5421:25
6:54
-
10K
6.21 mi10:58:1442:296:5121:04
6:47
-0:07
15K
9.32 mi11:19:201:03:356:5021:06
6:48
+0:01
20K
12.43 mi11:40:181:24:336:4920:58
6:45
-0:03
HALF
13.11 mi11:44:491:29:046:484:31
6:38
-0:07
25K
15.53 mi12:01:121:45:276:4816:23
6:46
+0:08
30K
18.64 mi12:22:432:06:586:4921:31
6:56
+0:10
20M
20.00 mi12:32:182:16:336:509:35
7:04
+0:08
21M
21.00 mi12:39:402:23:556:527:22
7:22
+0:18
35K
21.75 mi12:44:442:28:596:525:04
6:47
-0:35
23M
23.00 mi12:53:362:37:516:528:52
7:06
+0:19
24M
24.00 mi13:00:302:44:456:526:54
6:54
-0:12
40K
24.85 mi13:06:412:50:566:536:11
7:14
+0:20
25.2M
25.20 mi13:09:192:53:346:542:38
7:39
+0:25
FINISH
26.22 mi13:16:163:00:316:546:57
6:50
-0:49

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

6:38 /mi

Average Pace

6:53 /mi

Slowest Pace

7:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:50:31

94% of race

Time at Steady Pace

10:00

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:53 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:37:1021:256:5421:25
6:54
#7677
10K
6.21 mi10:58:1442:296:5121:04
6:47
#7238
15K
9.32 mi11:19:201:03:356:5021:06
6:48
#7048
20K
12.43 mi11:40:181:24:336:4920:58
6:45
#6650
HALF
13.11 mi11:44:491:29:046:484:31
6:38
#6583
25K
15.53 mi12:01:121:45:276:4816:23
6:46
#6383
30K
18.64 mi12:22:432:06:586:4921:31
6:56
#6127
20M
20.00 mi12:32:182:16:336:509:35
7:04
#6101
21M
21.00 mi12:39:402:23:556:527:22
7:22
#6068
35K
21.75 mi12:44:442:28:596:525:04
6:47
#6037
23M
23.00 mi12:53:362:37:516:528:52
7:06
#6015
24M
24.00 mi13:00:302:44:456:526:54
6:54
#5976
40K
24.85 mi13:06:412:50:566:536:11
7:14
#6013
25.2M
25.20 mi13:09:192:53:346:542:38
7:39
#6007
FINISH
26.22 mi13:16:163:00:316:546:57
6:50
#5990
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi7677668066806732(Top 23%)5988(Top 37%)5988(Top 248%)
10K6.21 mi3.10 mi7238+4396374+3066374+3066765(Top 23%)6021(Top 37%)6021(Top 250%)
15K9.32 mi3.11 mi7048+1906231+1436231+1436732(Top 23%)5988(Top 37%)5988(Top 248%)
20K12.43 mi3.11 mi6650+3985936+2955936+2955661(Top 20%)5160(Top 32%)5160(Top 214%)
HALF13.11 mi0.68 mi6583+675889+475889+475504(Top 19%)5035(Top 31%)5035(Top 209%)
25K15.53 mi2.42 mi6383+2005732+1575732+1575395(Top 19%)4910(Top 30%)4910(Top 203%)
30K18.64 mi3.11 mi6127+2565509+2235509+2235357(Top 18%)4812(Top 29%)4812(Top 199%)
20M20.00 mi1.36 mi6101+265478+315478+315932(Top 20%)5197(Top 32%)5197(Top 215%)
21M21.00 mi1.00 mi6068+335441+375441+375649(Top 19%)4878(Top 30%)4878(Top 202%)
35K21.75 mi0.75 mi6037+315411+305411+305473(Top 19%)4798(Top 29%)4798(Top 199%)
23M23.00 mi1.25 mi6015+225384+275384+276017(Top 21%)5116(Top 31%)5116(Top 212%)
24M24.00 mi1.00 mi5976+395349+355349+355783(Top 20%)4885(Top 30%)4885(Top 202%)
40K24.85 mi0.85 mi6013-375370-215370-216924(Top 24%)5555(Top 34%)5555(Top 230%)
25.2M25.20 mi0.35 mi6007+65361+95361+95984(Top 21%)4903(Top 30%)4903(Top 203%)
FINISH26.22 mi1.02 mi5990+175339+225339+226254(Top 22%)5031(Top 31%)5031(Top 208%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21
+97ft-345ft

Overall

6732

Males

5988

M45-49

5988

5K→10K

3.1 - 6.2 mi

Top 23%
×5
+79ft-138ft

Overall

6765

Males

6021

M45-49

6021

10K→15K

6.2 - 9.3 mi

Top 23%
×3
+67ft-78ft

Overall

6732

Males

5988

M45-49

5988

15K→20K

9.3 - 12.4 mi

Top 20%
×5
+106ft-86ft

Overall

5661

Males

5160

M45-49

5160

20K→HALF

12.4 - 13.1 mi

Top 19%
×2
+19ft-37ft

Overall

5504

Males

5035

M45-49

5035

HALF→25K

13.1 - 15.5 mi

Top 19%
×4
+66ft-88ft

Overall

5395

Males

4910

M45-49

4910

25K→30K

15.5 - 18.6 mi

Top 18%
×9
+181ft-148ft

Overall

5357

Males

4812

M45-49

4812

30K→20M

18.6 - 20.0 mi

Top 20%
×5
+64ft-50ft

Overall

5932

Males

5197

M45-49

5197

20M→21M

20.0 - 21.0 mi

Top 19%
×8
+106ft-24ft

Overall

5649

Males

4878

M45-49

4878

21M→35K

21.0 - 21.8 mi

Top 19%
×7
+17ft-86ft

Overall

5473

Males

4798

M45-49

4798

35K→23M

21.8 - 23.0 mi

Top 21%
×5
+23ft-63ft

Overall

6017

Males

5116

M45-49

5116

23M→24M

23.0 - 24.0 mi

Top 20%
×6
+12ft-82ft

Overall

5783

Males

4885

M45-49

4885

24M→40K

24.0 - 24.9 mi

Top 24%
×1
+6ft-20ft

Overall

6924

Males

5555

M45-49

5555

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1
+13ft-16ft

Overall

5984

Males

4903

M45-49

4903

25.2M→FINISH

25.2 - 26.2 mi

Top 22%
×2
+22ft-21ft

Overall

6254

Males

5031

M45-49

5031

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2274*
Passed By
587
Net Change
+1687
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7677
5K → 10K496*57+439#7677#7238
10K → 15K257*67+190#7238#7048
15K → 20K409*11+398#7048#6650
20K → HALF714+67#6650#6583
HALF → 25K214*14+200#6583#6383
25K → 30K290*34+256#6383#6127
30K → 20M8357+26#6127#6101
20M → 21M8451+33#6101#6068
21M → 35K5726+31#6068#6037
35K → 23M8563+22#6037#6015
23M → 24M7233+39#6015#5976
24M → 40K6198-37#5976#6013
40K → 25.2M2620+6#6013#6007
25.2M → FINISH6952+17#6007#5990
TOTALS2274*587+1687

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

📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing