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BOSTON MARATHON 2026

David Chen

Bib: 10423•M

FL

Masters
Boston Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 29021
Top 30%
Gender (Male)
#0 / 16340
Top 43%
Masters (Masters Men)
#0 / 10617
Top 31%
Age Group (M45-49)
#0 / 2413
Top 47%
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· 3.11 mi
20:56
Rank: #6265
Start → 5K
20:56 | 6:45/mi
10K· 6.21 mi
41:57
Rank: #6418 (-153)
5K → 10K
21:01 | 6:46/mi
15K· 9.32 mi
1:03:15
Rank: #6697 (-279)
10K → 15K
21:18 | 6:52/mi
20K· 12.43 mi
1:24:42
Rank: #6775 (-78)
15K → 20K
21:27 | 6:55/mi
HALF· 13.11 mi
1:29:15
Rank: #6728 (+47)
20K → HALF
4:33 | 6:41/mi
25K· 15.53 mi
1:47:06
Rank: #7365 (-637)
HALF → 25K
17:51 | 7:22/mi
30K· 18.64 mi
2:11:30
Rank: #8112 (-747)
25K → 30K
24:24 | 7:52/mi
20M
2:22:22
Rank: #8360 (-248)
30K → 20M
10:52 | 8:01/mi
21M
2:30:42
Rank: #8527 (-167)
20M → 21M
8:20 | 8:20/mi
35K· 21.75 mi
2:36:15
Rank: #8531 (-4)
21M → 35K
5:33 | 7:26/mi
23M
2:45:43
Rank: #8554 (-23)
35K → 23M
9:28 | 7:34/mi
24M
2:53:17
Rank: #8625 (-71)
23M → 24M
7:34 | 7:34/mi
40K· 24.85 mi
2:59:53
Rank: #8641 (-16)
24M → 40K
6:36 | 7:44/mi
25.2M
3:02:49
Rank: #8664 (-23)
40K → 25.2M
2:56 | 8:31/mi
FINISH· 26.22 mi
3:10:27
Rank: #8722 (-58)
25.2M → FINISH
7:38 | 7:30/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:29:15
Pace6:49 /mi
2nd Half
Distance13.11 mi
Time1:41:12
Pace7:44 /mi
📊Positive Split: 13.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:37:4920:566:4520:56
6:45
-
10K
6.21 mi10:58:5041:576:4621:01
6:46
+0:01
15K
9.32 mi11:20:081:03:156:4821:18
6:52
+0:06
20K
12.43 mi11:41:351:24:426:4921:27
6:55
+0:03
HALF
13.11 mi11:46:081:29:156:494:33
6:41
-0:14
25K
15.53 mi12:03:591:47:066:5417:51
7:22
+0:41
30K
18.64 mi12:28:232:11:307:0424:24
7:52
+0:30
20M
20.00 mi12:39:152:22:227:0810:52
8:01
+0:09
21M
21.00 mi12:47:352:30:427:118:20
8:20
+0:19
35K
21.75 mi12:53:082:36:157:125:33
7:26
-0:54
23M
23.00 mi13:02:362:45:437:139:28
7:34
+0:08
24M
24.00 mi13:10:102:53:177:147:34
7:34
0:00
40K
24.85 mi13:16:462:59:537:156:36
7:44
+0:10
25.2M
25.20 mi13:19:423:02:497:162:56
8:31
+0:47
FINISH
26.22 mi13:27:203:10:277:177:38
7:30
-1:01

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

6:41 /mi

Average Pace

7:16 /mi

Slowest Pace

8:31 /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

1:29:15

47% of race

Time at Steady Pace

54:40

29% of race

Time at Slower Pace

46:32

24% of race

Average Pace: 7:16 /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 mi10:37:4920:566:4520:56
6:45
#6265
10K
6.21 mi10:58:5041:576:4621:01
6:46
#6418
15K
9.32 mi11:20:081:03:156:4821:18
6:52
#6697
20K
12.43 mi11:41:351:24:426:4921:27
6:55
#6775
HALF
13.11 mi11:46:081:29:156:494:33
6:41
#6728
25K
15.53 mi12:03:591:47:066:5417:51
7:22
#7365
30K
18.64 mi12:28:232:11:307:0424:24
7:52
#8112
20M
20.00 mi12:39:152:22:227:0810:52
8:01
#8360
21M
21.00 mi12:47:352:30:427:118:20
8:20
#8527
35K
21.75 mi12:53:082:36:157:125:33
7:26
#8531
23M
23.00 mi13:02:362:45:437:139:28
7:34
#8554
24M
24.00 mi13:10:102:53:177:147:34
7:34
#8625
40K
24.85 mi13:16:462:59:537:156:36
7:44
#8641
25.2M
25.20 mi13:19:423:02:497:162:56
8:31
#8664
FINISH
26.22 mi13:27:203:10:277:177:38
7:30
#8722
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 mi6265567856787395(Top 25%)6456(Top 40%)6456(Top 268%)
10K6.21 mi3.10 mi6418-1535783-1055783-1056617(Top 23%)5921(Top 36%)5921(Top 245%)
15K9.32 mi3.11 mi6697-2795982-1995982-1997395(Top 25%)6456(Top 40%)6456(Top 268%)
20K12.43 mi3.11 mi6775-786032-506032-507135(Top 25%)6251(Top 38%)6251(Top 259%)
HALF13.11 mi0.68 mi6728+475994+385994+385993(Top 21%)5421(Top 33%)5421(Top 225%)
25K15.53 mi2.42 mi7365-6376434-4406434-44010214(Top 35%)7936(Top 49%)7936(Top 329%)
30K18.64 mi3.11 mi8112-7476890-4566890-45612361(Top 43%)8810(Top 54%)8810(Top 365%)
20M20.00 mi1.36 mi8360-2487023-1337023-13312799(Top 44%)8912(Top 55%)8912(Top 369%)
21M21.00 mi1.00 mi8527-1677087-647087-6412036(Top 41%)8438(Top 52%)8438(Top 350%)
35K21.75 mi0.75 mi8531-47067+207067+2010168(Top 35%)7554(Top 46%)7554(Top 313%)
23M23.00 mi1.25 mi8554-237052+157052+159300(Top 32%)7035(Top 43%)7035(Top 292%)
24M24.00 mi1.00 mi8625-717061-97061-910564(Top 36%)7570(Top 46%)7570(Top 314%)
40K24.85 mi0.85 mi8641-167050+117050+1110408(Top 36%)7405(Top 45%)7405(Top 307%)
25.2M25.20 mi0.35 mi8664-237047+37047+311561(Top 40%)7856(Top 48%)7856(Top 326%)
FINISH26.22 mi1.02 mi8722-587050-37050-311295(Top 39%)7748(Top 47%)7748(Top 321%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21stories
+97ft-345ft

Overall

7395

Males

6456

M45-49

6456

5K→10K

3.1 - 6.2 mi

Top 23%
×5stories
+79ft-138ft

Overall

6617

Males

5921

M45-49

5921

10K→15K

6.2 - 9.3 mi

Top 25%
×3stories
+67ft-78ft

Overall

7395

Males

6456

M45-49

6456

15K→20K

9.3 - 12.4 mi

Top 25%
×5stories
+106ft-86ft

Overall

7135

Males

6251

M45-49

6251

20K→HALF

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5993

Males

5421

M45-49

5421

HALF→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

10214

Males

7936

M45-49

7936

25K→30K

15.5 - 18.6 mi

Top 43%
×9stories
+181ft-148ft

Overall

12361

Males

8810

M45-49

8810

30K→20M

18.6 - 20.0 mi

Top 44%
×5stories
+64ft-50ft

Overall

12799

Males

8912

M45-49

8912

20M→21M

20.0 - 21.0 mi

Top 41%
×8stories
+106ft-24ft

Overall

12036

Males

8438

M45-49

8438

21M→35K

21.0 - 21.8 mi

Top 35%
×7stories
+17ft-86ft

Overall

10168

Males

7554

M45-49

7554

35K→23M

21.8 - 23.0 mi

Top 32%
×5stories
+23ft-63ft

Overall

9300

Males

7035

M45-49

7035

23M→24M

23.0 - 24.0 mi

Top 36%
×6stories
+12ft-82ft

Overall

10564

Males

7570

M45-49

7570

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

10408

Males

7405

M45-49

7405

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

11561

Males

7856

M45-49

7856

25.2M→FINISH

25.2 - 26.2 mi

Top 39%
×2stories
+22ft-21ft

Overall

11295

Males

7748

M45-49

7748

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
800
Passed By
3257
Net Change
-2457
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6265
5K → 10K141294-153#6265#6418
10K → 15K57336-279#6418#6697
15K → 20K113191-78#6697#6775
20K → HALF5912+47#6775#6728
HALF → 25K27664-637#6728#7365
25K → 30K30777-747#7365#8112
30K → 20M25273-248#8112#8360
20M → 21M36203-167#8360#8527
21M → 35K5963-4#8527#8531
35K → 23M7497-23#8531#8554
23M → 24M57128-71#8554#8625
24M → 40K5874-16#8625#8641
40K → 25.2M2043-23#8641#8664
25.2M → FINISH44102-58#8664#8722
TOTALS8003257-2457
📊

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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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing