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BOSTON MARATHON 2026

Dongsheng Rao

Bib: 18123•M

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Age Group (M55-59)
#0 / 1491
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
23:40
3.11 mi
Rank: #13802
Start → 5K
23:40 | 7:38/mi
10K
47:22
6.21 mi
Rank: #13942 (-140)
5K → 10K
23:42 | 7:38/mi
15K
1:11:05
9.32 mi
Rank: #13885 (+57)
10K → 15K
23:43 | 7:39/mi
20K
1:35:00
12.43 mi
Rank: #13806 (+79)
15K → 20K
23:55 | 7:42/mi
HALF
1:40:37
13.11 mi
Rank: #14095 (-289)
20K → HALF
5:37 | 8:15/mi
25K
2:00:04
15.53 mi
Rank: #14318 (-223)
HALF → 25K
19:27 | 8:02/mi
30K
2:26:53
18.64 mi
Rank: #15013 (-695)
25K → 30K
26:49 | 8:38/mi
20M
2:40:30
20.00 mi
Rank: #15926 (-913)
30K → 20M
13:37 | 10:02/mi
21M
2:50:15
21.00 mi
Rank: #16162 (-236)
20M → 21M
9:45 | 9:45/mi
35K
2:56:37
21.75 mi
Rank: #16201 (-39)
21M → 35K
6:22 | 8:31/mi
23M
3:07:37
23.00 mi
Rank: #16241 (-40)
35K → 23M
11:00 | 8:48/mi
24M
3:16:22
24.00 mi
Rank: #16333 (-92)
23M → 24M
8:45 | 8:45/mi
40K
3:24:00
24.85 mi
Rank: #16377 (-44)
24M → 40K
7:38 | 8:56/mi
25.2M
3:27:17
25.20 mi
Rank: #16396 (-19)
40K → 25.2M
3:17 | 9:32/mi
FINISH
3:36:01
26.22 mi
Rank: #16479 (-83)
25.2M → FINISH
8:44 | 8:35/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:40:37
Pace7:41 /mi
2nd Half
Distance13.11 mi
Time1:55:24
Pace8:49 /mi
📊Positive Split: 14.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:05:3623:407:3823:40
7:38
-
10K
6.21 mi11:29:1847:227:3823:42
7:38
0:00
15K
9.32 mi11:53:011:11:057:3823:43
7:39
+0:01
20K
12.43 mi12:16:561:35:007:3923:55
7:42
+0:03
HALF
13.11 mi12:22:331:40:377:415:37
8:15
+0:33
25K
15.53 mi12:42:002:00:047:4419:27
8:02
-0:13
30K
18.64 mi13:08:492:26:537:5326:49
8:38
+0:36
20M
20.00 mi13:22:262:40:308:0213:37
10:02
+1:24
21M
21.00 mi13:32:112:50:158:079:45
9:45
-0:17
35K
21.75 mi13:38:332:56:378:086:22
8:31
-1:14
23M
23.00 mi13:49:333:07:378:1011:00
8:48
+0:17
24M
24.00 mi13:58:183:16:228:118:45
8:45
-0:03
40K
24.85 mi14:05:563:24:008:137:38
8:56
+0:11
25.2M
25.20 mi14:09:133:27:178:143:17
9:32
+0:36
FINISH
26.22 mi14:17:573:36:018:158:44
8:35
-0:57

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

7:38 /mi

Average Pace

8:15 /mi

Slowest Pace

10:02 /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

1:54:27

53% of race

Time at Steady Pace

1:14:55

35% of race

Time at Slower Pace

26:39

12% of race

Average Pace: 8:14 /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 mi11:05:3623:407:3823:40
7:38
#13802
10K
6.21 mi11:29:1847:227:3823:42
7:38
#13942
15K
9.32 mi11:53:011:11:057:3823:43
7:39
#13885
20K
12.43 mi12:16:561:35:007:3923:55
7:42
#13806
HALF
13.11 mi12:22:331:40:377:415:37
8:15
#14095
25K
15.53 mi12:42:002:00:047:4419:27
8:02
#14318
30K
18.64 mi13:08:492:26:537:5326:49
8:38
#15013
20M
20.00 mi13:22:262:40:308:0213:37
10:02
#15926
21M
21.00 mi13:32:112:50:158:079:45
9:45
#16162
35K
21.75 mi13:38:332:56:378:086:22
8:31
#16201
23M
23.00 mi13:49:333:07:378:1011:00
8:48
#16241
24M
24.00 mi13:58:183:16:228:118:45
8:45
#16333
40K
24.85 mi14:05:563:24:008:137:38
8:56
#16377
25.2M
25.20 mi14:09:133:27:178:143:17
9:32
#16396
FINISH
26.22 mi14:17:573:36:018:158:44
8:35
#16479
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi138029790979013964(Top 48%)9788(Top 60%)9788(Top 656%)
10K6.21 mi3.10 mi13942-1409836-469836-4614100(Top 49%)9877(Top 60%)9877(Top 662%)
15K9.32 mi3.11 mi13885+579785+519785+5113964(Top 48%)9788(Top 60%)9788(Top 656%)
20K12.43 mi3.11 mi13806+799719+669719+6613699(Top 47%)9608(Top 59%)9608(Top 644%)
HALF13.11 mi0.68 mi14095-2899836-1179836-11718576(Top 64%)11674(Top 71%)11674(Top 783%)
25K15.53 mi2.42 mi14318-2239910-749910-7415567(Top 54%)10330(Top 63%)10330(Top 693%)
30K18.64 mi3.11 mi15013-69510149-23910149-23917630(Top 61%)11090(Top 68%)11090(Top 744%)
20M20.00 mi1.36 mi15926-91310478-32910478-32922631(Top 78%)13367(Top 82%)13367(Top 897%)
21M21.00 mi1.00 mi16162-23610555-7710555-7719546(Top 67%)11856(Top 73%)11856(Top 795%)
35K21.75 mi0.75 mi16201-39105551055517598(Top 61%)10851(Top 66%)10851(Top 728%)
23M23.00 mi1.25 mi16241-4010557-210557-217378(Top 60%)10692(Top 65%)10692(Top 717%)
24M24.00 mi1.00 mi16333-9210577-2010577-2018257(Top 63%)11073(Top 68%)11073(Top 743%)
40K24.85 mi0.85 mi16377-4410583-610583-618015(Top 62%)10900(Top 67%)10900(Top 731%)
25.2M25.20 mi0.35 mi16396-1910579+410579+417358(Top 60%)10582(Top 65%)10582(Top 710%)
FINISH26.22 mi1.02 mi16479-8310593-1410593-1418490(Top 64%)11120(Top 68%)11120(Top 746%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21
+97ft-345ft

Overall

13964

Males

9788

M55-59

9788

5K→10K

3.1 - 6.2 mi

Top 49%
×5
+79ft-138ft

Overall

14100

Males

9877

M55-59

9877

10K→15K

6.2 - 9.3 mi

Top 48%
×3
+67ft-78ft

Overall

13964

Males

9788

M55-59

9788

15K→20K

9.3 - 12.4 mi

Top 47%
×5
+106ft-86ft

Overall

13699

Males

9608

M55-59

9608

20K→HALF

12.4 - 13.1 mi

Top 64%
×2
+19ft-37ft

Overall

18576

Males

11674

M55-59

11674

HALF→25K

13.1 - 15.5 mi

Top 54%
×4
+66ft-88ft

Overall

15567

Males

10330

M55-59

10330

25K→30K

15.5 - 18.6 mi

Top 61%
×9
+181ft-148ft

Overall

17630

Males

11090

M55-59

11090

30K→20M

18.6 - 20.0 mi

Top 78%
×5
+64ft-50ft

Overall

22631

Males

13367

M55-59

13367

20M→21M

20.0 - 21.0 mi

Top 67%
×8
+106ft-24ft

Overall

19546

Males

11856

M55-59

11856

21M→35K

21.0 - 21.8 mi

Top 61%
×7
+17ft-86ft

Overall

17598

Males

10851

M55-59

10851

35K→23M

21.8 - 23.0 mi

Top 60%
×5
+23ft-63ft

Overall

17378

Males

10692

M55-59

10692

23M→24M

23.0 - 24.0 mi

Top 63%
×6
+12ft-82ft

Overall

18257

Males

11073

M55-59

11073

24M→40K

24.0 - 24.9 mi

Top 62%
×1
+6ft-20ft

Overall

18015

Males

10900

M55-59

10900

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1
+13ft-16ft

Overall

17358

Males

10582

M55-59

10582

25.2M→FINISH

25.2 - 26.2 mi

Top 64%
×2
+22ft-21ft

Overall

18490

Males

11120

M55-59

11120

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1124*
Passed By
2103
Net Change
-2677
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13802
5K → 10K200200-140#13802#13942
10K → 15K228*171+57#13942#13885
15K → 20K201*122+79#13885#13806
20K → HALF4200-289#13806#14095
HALF → 25K83200-223#14095#14318
25K → 30K59200-695#14318#15013
30K → 20M8200-913#15013#15926
20M → 21M48200-236#15926#16162
21M → 35K4988-39#16162#16201
35K → 23M80120-40#16201#16241
23M → 24M43135-92#16241#16333
24M → 40K57101-44#16333#16377
40K → 25.2M2544-19#16377#16396
25.2M → FINISH39122-83#16396#16479
TOTALS1124*2103-2677

* 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