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BOSTON MARATHON 2026

Tongzhou Li

Bib: 30955•M

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 34%
Gender (Male)
#0 / 16340
Top 47%
Masters (Masters Men)
#0 / 10617
Top 35%
Age Group (M40-44)
#0 / 2198
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
24:50
3.11 mi
Rank: #16891
Start → 5K
24:50 | 8:00/mi
10K
47:34
6.21 mi
Rank: #14210 (+2681)
5K → 10K
22:44 | 7:20/mi
15K
1:09:03
9.32 mi
Rank: #11997 (+2213)
10K → 15K
21:29 | 6:55/mi
20K
1:31:03
12.43 mi
Rank: #11084 (+913)
15K → 20K
22:00 | 7:05/mi
HALF
1:35:48
13.11 mi
Rank: #10906 (+178)
20K → HALF
4:45 | 6:59/mi
25K
1:53:06
15.53 mi
Rank: #10392 (+514)
HALF → 25K
17:18 | 7:09/mi
30K
2:15:51
18.64 mi
Rank: #9954 (+438)
25K → 30K
22:45 | 7:20/mi
20M
2:25:57
20.00 mi
Rank: #9813 (+141)
30K → 20M
10:06 | 7:27/mi
21M
2:34:05
21.00 mi
Rank: #9844 (-31)
20M → 21M
8:08 | 8:08/mi
35K
2:39:29
21.75 mi
Rank: #9765 (+79)
21M → 35K
5:24 | 7:14/mi
23M
2:48:52
23.00 mi
Rank: #9647 (+118)
35K → 23M
9:23 | 7:30/mi
24M
2:56:26
24.00 mi
Rank: #9668 (-21)
23M → 24M
7:34 | 7:34/mi
40K
3:03:02
24.85 mi
Rank: #9673 (-5)
24M → 40K
6:36 | 7:44/mi
25.2M
3:05:55
25.20 mi
Rank: #9677 (-4)
40K → 25.2M
2:53 | 8:22/mi
FINISH
3:13:35
26.22 mi
Rank: #9739 (-62)
25.2M → FINISH
7:40 | 7:32/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:35:48
Pace7:19 /mi
2nd Half
Distance13.11 mi
Time1:37:47
Pace7:28 /mi
📊Positive Split: 2.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:4624:508:0024:50
8:00
-
10K
6.21 mi12:16:3047:347:4022:44
7:20
-0:40
15K
9.32 mi12:37:591:09:037:2521:29
6:55
-0:25
20K
12.43 mi12:59:591:31:037:2022:00
7:05
+0:10
HALF
13.11 mi13:04:441:35:487:194:45
6:59
-0:06
25K
15.53 mi13:22:021:53:067:1717:18
7:09
+0:10
30K
18.64 mi13:44:472:15:517:1822:45
7:20
+0:11
20M
20.00 mi13:54:532:25:577:1810:06
7:27
+0:07
21M
21.00 mi14:03:012:34:057:218:08
8:08
+0:41
35K
21.75 mi14:08:252:39:297:205:24
7:14
-0:54
23M
23.00 mi14:17:482:48:527:219:23
7:30
+0:16
24M
24.00 mi14:25:222:56:267:227:34
7:34
+0:04
40K
24.85 mi14:31:583:03:027:226:36
7:44
+0:10
25.2M
25.20 mi14:34:513:05:557:232:53
8:22
+0:38
FINISH
26.22 mi14:42:313:13:357:247:40
7:32
-0:50

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

6:55 /mi

Average Pace

7:23 /mi

Slowest Pace

8:22 /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

1:10:56

37% of race

Time at Steady Pace

1:20:12

41% of race

Time at Slower Pace

42:27

22% of race

Average Pace: 7:23 /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 mi11:53:4624:508:0024:50
8:00
#16891
10K
6.21 mi12:16:3047:347:4022:44
7:20
#14210
15K
9.32 mi12:37:591:09:037:2521:29
6:55
#11997
20K
12.43 mi12:59:591:31:037:2022:00
7:05
#11084
HALF
13.11 mi13:04:441:35:487:194:45
6:59
#10906
25K
15.53 mi13:22:021:53:067:1717:18
7:09
#10392
30K
18.64 mi13:44:472:15:517:1822:45
7:20
#9954
20M
20.00 mi13:54:532:25:577:1810:06
7:27
#9813
21M
21.00 mi14:03:012:34:057:218:08
8:08
#9844
35K
21.75 mi14:08:252:39:297:205:24
7:14
#9765
23M
23.00 mi14:17:482:48:527:219:23
7:30
#9647
24M
24.00 mi14:25:222:56:267:227:34
7:34
#9668
40K
24.85 mi14:31:583:03:027:226:36
7:44
#9673
25.2M
25.20 mi14:34:513:05:557:232:53
8:22
#9677
FINISH
26.22 mi14:42:313:13:357:247:40
7:32
#9739
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi1689110962109627930(Top 27%)6821(Top 42%)6821(Top 310%)
10K6.21 mi3.10 mi14210+26819926+10369926+103611299(Top 39%)8653(Top 53%)8653(Top 394%)
15K9.32 mi3.11 mi11997+22138994+9328994+9327930(Top 27%)6821(Top 42%)6821(Top 310%)
20K12.43 mi3.11 mi11084+9138536+4588536+4588442(Top 29%)7099(Top 43%)7099(Top 323%)
HALF13.11 mi0.68 mi10906+1788443+938443+938442(Top 29%)7141(Top 44%)7141(Top 325%)
25K15.53 mi2.42 mi10392+5148175+2688175+2688358(Top 29%)6957(Top 43%)6957(Top 317%)
30K18.64 mi3.11 mi9954+4387908+2677908+2678270(Top 28%)6760(Top 41%)6760(Top 308%)
20M20.00 mi1.36 mi9813+1417809+997809+998638(Top 30%)6854(Top 42%)6854(Top 312%)
21M21.00 mi1.00 mi9844-317812-37812-310738(Top 37%)7835(Top 48%)7835(Top 356%)
35K21.75 mi0.75 mi9765+797752+607752+608672(Top 30%)6792(Top 42%)6792(Top 309%)
23M23.00 mi1.25 mi9647+1187657+957657+958852(Top 31%)6796(Top 42%)6796(Top 309%)
24M24.00 mi1.00 mi9668-217650+77650+710578(Top 36%)7584(Top 46%)7584(Top 345%)
40K24.85 mi0.85 mi9673-57624+267624+2610420(Top 36%)7417(Top 45%)7417(Top 337%)
25.2M25.20 mi0.35 mi9677-47609+157609+1510636(Top 37%)7443(Top 46%)7443(Top 339%)
FINISH26.22 mi1.02 mi9739-627607+27607+211555(Top 40%)7874(Top 48%)7874(Top 358%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21
+97ft-345ft

Overall

7930

Males

6821

M40-44

6821

5K→10K

3.1 - 6.2 mi

Top 39%
×5
+79ft-138ft

Overall

11299

Males

8653

M40-44

8653

10K→15K

6.2 - 9.3 mi

Top 27%
×3
+67ft-78ft

Overall

7930

Males

6821

M40-44

6821

15K→20K

9.3 - 12.4 mi

Top 29%
×5
+106ft-86ft

Overall

8442

Males

7099

M40-44

7099

20K→HALF

12.4 - 13.1 mi

Top 29%
×2
+19ft-37ft

Overall

8442

Males

7141

M40-44

7141

HALF→25K

13.1 - 15.5 mi

Top 29%
×4
+66ft-88ft

Overall

8358

Males

6957

M40-44

6957

25K→30K

15.5 - 18.6 mi

Top 28%
×9
+181ft-148ft

Overall

8270

Males

6760

M40-44

6760

30K→20M

18.6 - 20.0 mi

Top 30%
×5
+64ft-50ft

Overall

8638

Males

6854

M40-44

6854

20M→21M

20.0 - 21.0 mi

Top 37%
×8
+106ft-24ft

Overall

10738

Males

7835

M40-44

7835

21M→35K

21.0 - 21.8 mi

Top 30%
×7
+17ft-86ft

Overall

8672

Males

6792

M40-44

6792

35K→23M

21.8 - 23.0 mi

Top 31%
×5
+23ft-63ft

Overall

8852

Males

6796

M40-44

6796

23M→24M

23.0 - 24.0 mi

Top 36%
×6
+12ft-82ft

Overall

10578

Males

7584

M40-44

7584

24M→40K

24.0 - 24.9 mi

Top 36%
×1
+6ft-20ft

Overall

10420

Males

7417

M40-44

7417

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1
+13ft-16ft

Overall

10636

Males

7443

M40-44

7443

25.2M→FINISH

25.2 - 26.2 mi

Top 40%
×2
+22ft-21ft

Overall

11555

Males

7874

M40-44

7874

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
7662*
Passed By
509
Net Change
+7152
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16891
5K → 10K2683*2+2681#16891#14210
10K → 15K2213*0+2213#14210#11997
15K → 20K913*0+913#11997#11084
20K → HALF1791+178#11084#10906
HALF → 25K517*3+514#10906#10392
25K → 30K459*21+438#10392#9954
30K → 20M16322+141#9954#9813
20M → 21M6394-31#9813#9844
21M → 35K9819+79#9844#9765
35K → 23M15537+118#9765#9647
23M → 24M6384-21#9647#9668
24M → 40K6772-5#9668#9673
40K → 25.2M2933-4#9673#9677
25.2M → FINISH60121-62#9677#9739
TOTALS7662*509+7152

* 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