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BOSTON MARATHON 2023

Jeffrey Chen

Bib: 3299•M

TN

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 9%
Gender (Male)
#0 / 15176
Top 15%
Division (M18-39)
#0 / 5285
Top 33%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:25
Rank: #2672
Start → 5K
20:25 | 6:34/mi
10K· 6.21 mi
40:49
Rank: #2912 (-240)
5K → 10K
20:24 | 6:34/mi
15K· 9.32 mi
1:01:08
Rank: #2887 (+25)
10K → 15K
20:19 | 6:32/mi
20K· 12.43 mi
1:21:29
Rank: #2788 (+99)
15K → 20K
20:21 | 6:33/mi
Half· 13.11 mi
1:25:59
Rank: #2799 (-11)
20K → Half
4:30 | 6:36/mi
25K· 15.53 mi
1:41:53
Rank: #2731 (+68)
Half → 25K
15:54 | 6:33/mi
30K· 18.64 mi
2:02:27
Rank: #2567 (+164)
25K → 30K
20:34 | 6:37/mi
20M
2:11:26
Rank: #2481 (+86)
30K → 20M
8:59 | 6:37/mi
21M
2:18:16
Rank: #2403 (+78)
20M → 21M
6:50 | 6:50/mi
35K· 21.75 mi
2:23:11
Rank: #2398 (+5)
21M → 35K
4:55 | 6:34/mi
23M
2:31:40
Rank: #2382 (+16)
35K → 23M
8:29 | 6:47/mi
24M
2:38:23
Rank: #2380 (+2)
23M → 24M
6:43 | 6:43/mi
40K· 24.85 mi
2:44:12
Rank: #2363 (+17)
24M → 40K
5:49 | 6:48/mi
25.2M
2:46:40
Rank: #2353 (+10)
40K → 25.2M
2:28 | 7:09/mi
Finish· 26.22 mi
2:53:22
Rank: #2340 (+13)
25.2M → Finish
6:42 | 6:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:59
Pace6:34 /mi
2nd Half
Distance13.11 mi
Time1:27:23
Pace6:40 /mi
📊Positive Split: 1.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:4020:256:3420:25
6:34
-
10K
6.21 mi10:42:0440:496:3420:24
6:34
0:00
15K
9.32 mi11:02:231:01:086:3420:19
6:32
-0:02
20K
12.43 mi11:22:441:21:296:3320:21
6:33
+0:01
Half
13.11 mi11:27:141:25:596:344:30
6:36
+0:03
25K
15.53 mi11:43:081:41:536:3415:54
6:33
-0:03
30K
18.64 mi12:03:422:02:276:3420:34
6:37
+0:04
20M
20.00 mi12:12:412:11:266:348:59
6:37
0:00
21M
21.00 mi12:19:312:18:166:356:50
6:50
+0:13
35K
21.75 mi12:24:262:23:116:354:55
6:34
-0:16
23M
23.00 mi12:32:552:31:406:368:29
6:47
+0:13
24M
24.00 mi12:39:382:38:236:366:43
6:43
-0:04
40K
24.85 mi12:45:272:44:126:365:49
6:48
+0:05
25.2M
25.20 mi12:47:552:46:406:372:28
7:09
+0:21
Finish
26.22 mi12:54:372:53:226:376:42
6:34
-0:35

Checkpoints & Pacing

📈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

6:32 /mi

Average Pace

6:37 /mi

Slowest Pace

7:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:54

99% of race

Time at Steady Pace

2:28

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:37 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:21:4020:256:3420:25
6:34
#2672
10K
6.21 mi10:42:0440:496:3420:24
6:34
#2912
15K
9.32 mi11:02:231:01:086:3420:19
6:32
#2887
20K
12.43 mi11:22:441:21:296:3320:21
6:33
#2788
Half
13.11 mi11:27:141:25:596:344:30
6:36
#2799
25K
15.53 mi11:43:081:41:536:3415:54
6:33
#2731
30K
18.64 mi12:03:422:02:276:3420:34
6:37
#2567
20M
20.00 mi12:12:412:11:266:348:59
6:37
#2481
21M
21.00 mi12:19:312:18:166:356:50
6:50
#2403
35K
21.75 mi12:24:262:23:116:354:55
6:34
#2398
23M
23.00 mi12:32:552:31:406:368:29
6:47
#2382
24M
24.00 mi12:39:382:38:236:366:43
6:43
#2380
40K
24.85 mi12:45:272:44:126:365:49
6:48
#2363
25.2M
25.20 mi12:47:552:46:406:372:28
7:09
#2353
Finish
26.22 mi12:54:372:53:226:376:42
6:34
#2340
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2672254425442870(Top 11%)2742(Top 18%)2742(Top 52%)
10K6.21 mi3.10 mi2912-2402778-2342778-2343227(Top 12%)3073(Top 20%)3073(Top 58%)
15K9.32 mi3.11 mi2887+252754+242754+242870(Top 11%)2742(Top 18%)2742(Top 52%)
20K12.43 mi3.11 mi2788+992665+892665+892560(Top 10%)2449(Top 16%)2449(Top 46%)
Half13.11 mi0.68 mi2799-112678-132678-133328(Top 13%)3159(Top 21%)3159(Top 60%)
25K15.53 mi2.42 mi2731+682608+702608+702468(Top 9%)2360(Top 16%)2360(Top 45%)
30K18.64 mi3.11 mi2567+1642453+1552453+1552048(Top 8%)1957(Top 13%)1957(Top 37%)
20M20.00 mi1.36 mi2481+862376+772376+771920(Top 7%)1832(Top 12%)1832(Top 35%)
21M21.00 mi1.00 mi2403+782302+742302+741534(Top 6%)1463(Top 10%)1463(Top 28%)
35K21.75 mi0.75 mi2398+52296+62296+62805(Top 11%)2632(Top 17%)2632(Top 50%)
23M23.00 mi1.25 mi2382+162279+172279+172501(Top 9%)2347(Top 15%)2347(Top 44%)
24M24.00 mi1.00 mi2380+22278+12278+13174(Top 12%)2940(Top 19%)2940(Top 56%)
40K24.85 mi0.85 mi2363+172260+182260+182818(Top 11%)2592(Top 17%)2592(Top 49%)
25.2M25.20 mi0.35 mi2353+102251+92251+92285(Top 9%)2118(Top 14%)2118(Top 40%)
Finish26.22 mi1.02 mi2340+132240+112240+112838(Top 11%)2575(Top 17%)2575(Top 49%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21stories
+97ft-345ft

Overall

2870

Males

2742

M18-39

2742

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3227

Males

3073

M18-39

3073

10K→15K

6.2 - 9.3 mi

Top 11%
×3stories
+67ft-78ft

Overall

2870

Males

2742

M18-39

2742

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2560

Males

2449

M18-39

2449

20K→Half

12.4 - 13.1 mi

Top 13%
×2stories
+19ft-37ft

Overall

3328

Males

3159

M18-39

3159

Half→25K

13.1 - 15.5 mi

Top 9%
×4stories
+66ft-88ft

Overall

2468

Males

2360

M18-39

2360

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2048

Males

1957

M18-39

1957

30K→20M

18.6 - 20.0 mi

Top 7%
×5stories
+64ft-50ft

Overall

1920

Males

1832

M18-39

1832

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1534

Males

1463

M18-39

1463

21M→35K

21.0 - 21.8 mi

Top 11%
×7stories
+17ft-86ft

Overall

2805

Males

2632

M18-39

2632

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2501

Males

2347

M18-39

2347

23M→24M

23.0 - 24.0 mi

Top 12%
×6stories
+12ft-82ft

Overall

3174

Males

2940

M18-39

2940

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

2818

Males

2592

M18-39

2592

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2285

Males

2118

M18-39

2118

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

2838

Males

2575

M18-39

2575

Passing Analysis

Category:
Athletes Passed
933
Passed By
601
Net Change
+332
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2672
5K → 10K69309-240#2672#2912
10K → 15K10984+25#2912#2887
15K → 20K12728+99#2887#2788
20K → Half819-11#2788#2799
Half → 25K9325+68#2799#2731
25K → 30K17410+164#2731#2567
30K → 20M915+86#2567#2481
20M → 21M813+78#2481#2403
21M → 35K2520+5#2403#2398
35K → 23M4832+16#2398#2382
23M → 24M2422+2#2382#2380
24M → 40K3316+17#2380#2363
40K → 25.2M177+10#2363#2353
25.2M → Finish3421+13#2353#2340
TOTALS933601+332
📊

Passing Visuals

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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing