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BOSTON MARATHON 2026

Gaozhi Chen

Bib: 5999•M

ON

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· 3.11 mi
21:07
Rank: #6826
Start → 5K
21:07 | 6:48/mi
10K· 6.21 mi
41:59
Rank: #6468 (+358)
5K → 10K
20:52 | 6:43/mi
15K· 9.32 mi
1:02:35
Rank: #5968 (+500)
10K → 15K
20:36 | 6:38/mi
20K· 12.43 mi
1:23:48
Rank: #6036 (-68)
15K → 20K
21:13 | 6:50/mi
HALF· 13.11 mi
1:28:35
Rank: #6220 (-184)
20K → HALF
4:47 | 7:02/mi
25K· 15.53 mi
1:44:57
Rank: #6047 (+173)
HALF → 25K
16:22 | 6:45/mi
30K· 18.64 mi
2:07:21
Rank: #6342 (-295)
25K → 30K
22:24 | 7:13/mi
20M
2:17:04
Rank: #6357 (-15)
30K → 20M
9:43 | 7:10/mi
21M
2:24:56
Rank: #6497 (-140)
20M → 21M
7:52 | 7:52/mi
35K· 21.75 mi
2:29:59
Rank: #6431 (+66)
21M → 35K
5:03 | 6:46/mi
23M
2:38:34
Rank: #6293 (+138)
35K → 23M
8:35 | 6:52/mi
24M
2:45:22
Rank: #6225 (+68)
23M → 24M
6:48 | 6:48/mi
40K· 24.85 mi
2:51:16
Rank: #6138 (+87)
24M → 40K
5:54 | 6:55/mi
25.2M
2:53:53
Rank: #6117 (+21)
40K → 25.2M
2:37 | 7:36/mi
FINISH· 26.22 mi
3:00:45
Rank: #6051 (+66)
25.2M → FINISH
6:52 | 6:45/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
Time1:28:35
Pace6:46 /mi
2nd Half
Distance13.11 mi
Time1:32:10
Pace7:02 /mi
📊Positive Split: 4.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:0421:076:4821:07
6:48
-
10K
6.21 mi10:45:5641:596:4620:52
6:43
-0:05
15K
9.32 mi11:06:321:02:356:4320:36
6:38
-0:05
20K
12.43 mi11:27:451:23:486:4521:13
6:50
+0:12
HALF
13.11 mi11:32:321:28:356:464:47
7:02
+0:12
25K
15.53 mi11:48:541:44:576:4616:22
6:45
-0:17
30K
18.64 mi12:11:182:07:216:5022:24
7:13
+0:28
20M
20.00 mi12:21:012:17:046:529:43
7:10
-0:03
21M
21.00 mi12:28:532:24:566:557:52
7:52
+0:42
35K
21.75 mi12:33:562:29:596:545:03
6:46
-1:06
23M
23.00 mi12:42:312:38:346:548:35
6:52
+0:06
24M
24.00 mi12:49:192:45:226:546:48
6:48
-0:04
40K
24.85 mi12:55:132:51:166:545:54
6:55
+0:07
25.2M
25.20 mi12:57:502:53:536:552:37
7:36
+0:41
FINISH
26.22 mi13:04:423:00:456:546:52
6:45
-0:51

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

6:54 /mi

Slowest Pace

7:52 /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

2:50:16

94% of race

Time at Steady Pace

2:37

1% of race

Time at Slower Pace

7:52

4% of race

Average Pace: 6:54 /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 mi10:25:0421:076:4821:07
6:48
#6826
10K
6.21 mi10:45:5641:596:4620:52
6:43
#6468
15K
9.32 mi11:06:321:02:356:4320:36
6:38
#5968
20K
12.43 mi11:27:451:23:486:4521:13
6:50
#6036
HALF
13.11 mi11:32:321:28:356:464:47
7:02
#6220
25K
15.53 mi11:48:541:44:576:4616:22
6:45
#6047
30K
18.64 mi12:11:182:07:216:5022:24
7:13
#6342
20M
20.00 mi12:21:012:17:046:529:43
7:10
#6357
21M
21.00 mi12:28:532:24:566:557:52
7:52
#6497
35K
21.75 mi12:33:562:29:596:545:03
6:46
#6431
23M
23.00 mi12:42:312:38:346:548:35
6:52
#6293
24M
24.00 mi12:49:192:45:226:546:48
6:48
#6225
40K
24.85 mi12:55:132:51:166:545:54
6:55
#6138
25.2M
25.20 mi12:57:502:53:536:552:37
7:36
#6117
FINISH
26.22 mi13:04:423:00:456:546:52
6:45
#6051
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 mi6826608760875169(Top 18%)4800(Top 29%)4800(Top 199%)
10K6.21 mi3.10 mi6468+3585825+2625825+2626121(Top 21%)5560(Top 34%)5560(Top 230%)
15K9.32 mi3.11 mi5968+5005450+3755450+3755169(Top 18%)4800(Top 29%)4800(Top 199%)
20K12.43 mi3.11 mi6036-685489-395489-396461(Top 22%)5753(Top 35%)5753(Top 238%)
HALF13.11 mi0.68 mi6220-1845628-1395628-1398711(Top 30%)7288(Top 45%)7288(Top 302%)
25K15.53 mi2.42 mi6047+1735482+1465482+1465337(Top 18%)4864(Top 30%)4864(Top 202%)
30K18.64 mi3.11 mi6342-2955672-1905672-1907450(Top 26%)6280(Top 38%)6280(Top 260%)
20M20.00 mi1.36 mi6357-155663+95663+96596(Top 23%)5641(Top 35%)5641(Top 234%)
21M21.00 mi1.00 mi6497-1405773-1105773-1108927(Top 31%)6889(Top 42%)6889(Top 285%)
35K21.75 mi0.75 mi6431+665715+585715+585319(Top 18%)4683(Top 29%)4683(Top 194%)
23M23.00 mi1.25 mi6293+1385602+1135602+1134493(Top 15%)3999(Top 24%)3999(Top 166%)
24M24.00 mi1.00 mi6225+685541+615541+615125(Top 18%)4438(Top 27%)4438(Top 184%)
40K24.85 mi0.85 mi6138+875463+785463+784863(Top 17%)4189(Top 26%)4189(Top 174%)
25.2M25.20 mi0.35 mi6117+215444+195444+195721(Top 20%)4737(Top 29%)4737(Top 196%)
FINISH26.22 mi1.02 mi6051+665384+605384+605703(Top 20%)4681(Top 29%)4681(Top 194%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21stories
+97ft-345ft

Overall

5169

Males

4800

M45-49

4800

5K→10K

3.1 - 6.2 mi

Top 21%
×5stories
+79ft-138ft

Overall

6121

Males

5560

M45-49

5560

10K→15K

6.2 - 9.3 mi

Top 18%
×3stories
+67ft-78ft

Overall

5169

Males

4800

M45-49

4800

15K→20K

9.3 - 12.4 mi

Top 22%
×5stories
+106ft-86ft

Overall

6461

Males

5753

M45-49

5753

20K→HALF

12.4 - 13.1 mi

Top 30%
×2stories
+19ft-37ft

Overall

8711

Males

7288

M45-49

7288

HALF→25K

13.1 - 15.5 mi

Top 18%
×4stories
+66ft-88ft

Overall

5337

Males

4864

M45-49

4864

25K→30K

15.5 - 18.6 mi

Top 26%
×9stories
+181ft-148ft

Overall

7450

Males

6280

M45-49

6280

30K→20M

18.6 - 20.0 mi

Top 23%
×5stories
+64ft-50ft

Overall

6596

Males

5641

M45-49

5641

20M→21M

20.0 - 21.0 mi

Top 31%
×8stories
+106ft-24ft

Overall

8927

Males

6889

M45-49

6889

21M→35K

21.0 - 21.8 mi

Top 18%
×7stories
+17ft-86ft

Overall

5319

Males

4683

M45-49

4683

35K→23M

21.8 - 23.0 mi

Top 15%
×5stories
+23ft-63ft

Overall

4493

Males

3999

M45-49

3999

23M→24M

23.0 - 24.0 mi

Top 18%
×6stories
+12ft-82ft

Overall

5125

Males

4438

M45-49

4438

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4863

Males

4189

M45-49

4189

40K→25.2M

24.9 - 25.2 mi

Top 20%
×1story
+13ft-16ft

Overall

5721

Males

4737

M45-49

4737

25.2M→FINISH

25.2 - 26.2 mi

Top 20%
×2stories
+22ft-21ft

Overall

5703

Males

4681

M45-49

4681

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1975
Passed By
1200
Net Change
+775
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6826
5K → 10K42971+358#6826#6468
10K → 15K51010+500#6468#5968
15K → 20K110178-68#5968#6036
20K → HALF2186-184#6036#6220
HALF → 25K19825+173#6220#6047
25K → 30K74369-295#6047#6342
30K → 20M7590-15#6342#6357
20M → 21M29169-140#6357#6497
21M → 35K7711+66#6497#6431
35K → 23M14911+138#6431#6293
23M → 24M9426+68#6293#6225
24M → 40K10114+87#6225#6138
40K → 25.2M3817+21#6138#6117
25.2M → FINISH8923+66#6117#6051
TOTALS19751200+775
📊

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