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BOSTON MARATHON 2023

Jason Yen

Bib: 839•M

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 3%
Gender (Male)
#0 / 15176
Top 5%
Division (M18-39)
#0 / 5285
Top 13%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:23
Rank: #1231
Start → 5K
19:23 | 6:14/mi
10K· 6.21 mi
38:41
Rank: #1271 (-40)
5K → 10K
19:18 | 6:13/mi
15K· 9.32 mi
58:04
Rank: #1282 (-11)
10K → 15K
19:23 | 6:14/mi
20K· 12.43 mi
1:17:30
Rank: #1258 (+24)
15K → 20K
19:26 | 6:15/mi
Half· 13.11 mi
1:21:44
Rank: #1263 (-5)
20K → Half
4:14 | 6:12/mi
25K· 15.53 mi
1:36:57
Rank: #1252 (+11)
Half → 25K
15:13 | 6:17/mi
30K· 18.64 mi
1:56:36
Rank: #1186 (+66)
25K → 30K
19:39 | 6:19/mi
20M
2:05:07
Rank: #1136 (+50)
30K → 20M
8:31 | 6:16/mi
21M
2:11:28
Rank: #1064 (+72)
20M → 21M
6:21 | 6:21/mi
35K· 21.75 mi
2:15:52
Rank: #1031 (+33)
21M → 35K
4:24 | 5:53/mi
23M
2:23:29
Rank: #967 (+64)
35K → 23M
7:37 | 6:05/mi
24M
2:29:28
Rank: #931 (+36)
23M → 24M
5:59 | 5:59/mi
40K· 24.85 mi
2:34:44
Rank: #911 (+20)
24M → 40K
5:16 | 6:10/mi
25.2M
2:36:59
Rank: #896 (+15)
40K → 25.2M
2:15 | 6:31/mi
Finish· 26.22 mi
2:42:53
Rank: #847 (+49)
25.2M → Finish
5:54 | 5:47/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:21:44
Pace6:14 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:21:09
Pace6:11 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:4319:236:1419:23
6:14
-
10K
6.21 mi10:39:0138:416:1419:18
6:13
-0:01
15K
9.32 mi10:58:2458:046:1419:23
6:14
+0:01
20K
12.43 mi11:17:501:17:306:1419:26
6:15
+0:01
Half
13.11 mi11:22:041:21:446:144:14
6:12
-0:03
25K
15.53 mi11:37:171:36:576:1415:13
6:17
+0:05
30K
18.64 mi11:56:561:56:366:1519:39
6:19
+0:02
20M
20.00 mi12:05:272:05:076:158:31
6:16
-0:03
21M
21.00 mi12:11:482:11:286:166:21
6:21
+0:05
35K
21.75 mi12:16:122:15:526:154:24
5:53
-0:28
23M
23.00 mi12:23:492:23:296:147:37
6:05
+0:12
24M
24.00 mi12:29:482:29:286:145:59
5:59
-0:06
40K
24.85 mi12:35:042:34:446:145:16
6:10
+0:11
25.2M
25.20 mi12:37:192:36:596:142:15
6:31
+0:21
Finish
26.22 mi12:43:132:42:536:135:54
5:47
-0:44

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

5:47 /mi

Average Pace

6:13 /mi

Slowest Pace

6:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:40:38

99% of race

Time at Steady Pace

2:15

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:13 /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 mi10:19:4319:236:1419:23
6:14
#1231
10K
6.21 mi10:39:0138:416:1419:18
6:13
#1271
15K
9.32 mi10:58:2458:046:1419:23
6:14
#1282
20K
12.43 mi11:17:501:17:306:1419:26
6:15
#1258
Half
13.11 mi11:22:041:21:446:144:14
6:12
#1263
25K
15.53 mi11:37:171:36:576:1415:13
6:17
#1252
30K
18.64 mi11:56:561:56:366:1519:39
6:19
#1186
20M
20.00 mi12:05:272:05:076:158:31
6:16
#1136
21M
21.00 mi12:11:482:11:286:166:21
6:21
#1064
35K
21.75 mi12:16:122:15:526:154:24
5:53
#1031
23M
23.00 mi12:23:492:23:296:147:37
6:05
#967
24M
24.00 mi12:29:482:29:286:145:59
5:59
#931
40K
24.85 mi12:35:042:34:446:145:16
6:10
#911
25.2M
25.20 mi12:37:192:36:596:142:15
6:31
#896
Finish
26.22 mi12:43:132:42:536:135:54
5:47
#847
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1231116711671376(Top 5%)1310(Top 9%)1310(Top 25%)
10K6.21 mi3.10 mi1271-401206-391206-391392(Top 5%)1327(Top 9%)1327(Top 25%)
15K9.32 mi3.11 mi1282-111219-131219-131376(Top 5%)1310(Top 9%)1310(Top 25%)
20K12.43 mi3.11 mi1258+241197+221197+221227(Top 5%)1174(Top 8%)1174(Top 22%)
Half13.11 mi0.68 mi1263-51204-71204-71343(Top 5%)1283(Top 8%)1283(Top 24%)
25K15.53 mi2.42 mi1252+111197+71197+71231(Top 5%)1175(Top 8%)1175(Top 22%)
30K18.64 mi3.11 mi1186+661131+661131+66974(Top 4%)926(Top 6%)926(Top 18%)
20M20.00 mi1.36 mi1136+501083+481083+48793(Top 3%)753(Top 5%)753(Top 14%)
21M21.00 mi1.00 mi1064+721013+701013+70416(Top 2%)384(Top 3%)384(Top 7%)
35K21.75 mi0.75 mi1031+33981+32981+32489(Top 2%)454(Top 3%)454(Top 9%)
23M23.00 mi1.25 mi967+64920+61920+61444(Top 2%)416(Top 3%)416(Top 8%)
24M24.00 mi1.00 mi931+36884+36884+36515(Top 2%)486(Top 3%)486(Top 9%)
40K24.85 mi0.85 mi911+20864+20864+20593(Top 2%)559(Top 4%)559(Top 11%)
25.2M25.20 mi0.35 mi896+15849+15849+15545(Top 2%)513(Top 3%)513(Top 10%)
Finish26.22 mi1.02 mi847+49802+47802+47357(Top 1%)339(Top 2%)339(Top 6%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1376

Males

1310

M18-39

1310

5K→10K

3.1 - 6.2 mi

Top 5%
×5stories
+79ft-138ft

Overall

1392

Males

1327

M18-39

1327

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1376

Males

1310

M18-39

1310

15K→20K

9.3 - 12.4 mi

Top 5%
×5stories
+106ft-86ft

Overall

1227

Males

1174

M18-39

1174

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1343

Males

1283

M18-39

1283

Half→25K

13.1 - 15.5 mi

Top 5%
×4stories
+66ft-88ft

Overall

1231

Males

1175

M18-39

1175

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

974

Males

926

M18-39

926

30K→20M

18.6 - 20.0 mi

Top 3%
×5stories
+64ft-50ft

Overall

793

Males

753

M18-39

753

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

416

Males

384

M18-39

384

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

489

Males

454

M18-39

454

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

444

Males

416

M18-39

416

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

515

Males

486

M18-39

486

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

593

Males

559

M18-39

559

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

545

Males

513

M18-39

513

25.2M→Finish

25.2 - 26.2 mi

Top 1%
×2stories
+22ft-21ft

Overall

357

Males

339

M18-39

339

Passing Analysis

Category:
Athletes Passed
597
Passed By
213
Net Change
+384
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1231
5K → 10K5292-40#1231#1271
10K → 15K4051-11#1271#1282
15K → 20K4925+24#1282#1258
20K → Half611-5#1258#1263
Half → 25K2918+11#1263#1252
25K → 30K7812+66#1252#1186
30K → 20M500+50#1186#1136
20M → 21M720+72#1136#1064
21M → 35K330+33#1064#1031
35K → 23M640+64#1031#967
23M → 24M360+36#967#931
24M → 40K233+20#931#911
40K → 25.2M161+15#911#896
25.2M → Finish490+49#896#847
TOTALS597213+384
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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