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BOSTON MARATHON 2023

So Seyama

Bib: 787•M

DC

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 2%
Gender (Male)
#0 / 15176
Top 4%
Division (M18-39)
#0 / 5285
Top 10%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
17:35
Rank: #232
Start → 5K
17:35 | 5:40/mi
10K· 6.21 mi
35:19
Rank: #271 (-39)
5K → 10K
17:44 | 5:42/mi
15K· 9.32 mi
53:11
Rank: #287 (-16)
10K → 15K
17:52 | 5:45/mi
20K· 12.43 mi
1:11:48
Rank: #333 (-46)
15K → 20K
18:37 | 6:00/mi
Half· 13.11 mi
1:15:55
Rank: #353 (-20)
20K → Half
4:07 | 6:02/mi
25K· 15.53 mi
1:31:10
Rank: #430 (-77)
Half → 25K
15:15 | 6:17/mi
30K· 18.64 mi
1:51:26
Rank: #535 (-105)
25K → 30K
20:16 | 6:31/mi
20M
2:00:23
Rank: #580 (-45)
30K → 20M
8:57 | 6:35/mi
21M
2:07:18
Rank: #616 (-36)
20M → 21M
6:55 | 6:55/mi
35K· 21.75 mi
2:11:59
Rank: #632 (-16)
21M → 35K
4:41 | 6:16/mi
23M
2:20:04
Rank: #639 (-7)
35K → 23M
8:05 | 6:27/mi
24M
2:26:19
Rank: #649 (-10)
23M → 24M
6:15 | 6:15/mi
40K· 24.85 mi
2:31:47
Rank: #653 (-4)
24M → 40K
5:28 | 6:24/mi
25.2M
2:34:10
Rank: #656 (-3)
40K → 25.2M
2:23 | 6:55/mi
Finish· 26.22 mi
2:40:32
Rank: #664 (-8)
25.2M → Finish
6:22 | 6:15/mi

Course Map & Elevation

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:15:55
Pace5:47 /mi
2nd Half
Distance13.11 mi
Time1:24:37
Pace6:27 /mi
📊Positive Split: 11.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:17:4517:355:4017:35
5:40
-
10K
6.21 mi10:35:2935:195:4117:44
5:42
+0:02
15K
9.32 mi10:53:2153:115:4217:52
5:45
+0:03
20K
12.43 mi11:11:581:11:485:4718:37
6:00
+0:15
Half
13.11 mi11:16:051:15:555:474:07
6:02
+0:02
25K
15.53 mi11:31:201:31:105:5215:15
6:17
+0:15
30K
18.64 mi11:51:361:51:265:5920:16
6:31
+0:14
20M
20.00 mi12:00:332:00:236:018:57
6:35
+0:04
21M
21.00 mi12:07:282:07:186:046:55
6:55
+0:20
35K
21.75 mi12:12:092:11:596:044:41
6:16
-0:39
23M
23.00 mi12:20:142:20:046:058:05
6:27
+0:11
24M
24.00 mi12:26:292:26:196:066:15
6:15
-0:12
40K
24.85 mi12:31:572:31:476:065:28
6:24
+0:09
25.2M
25.20 mi12:34:202:34:106:072:23
6:55
+0:31
Finish
26.22 mi12:40:422:40:326:086:22
6:15
-0:40

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

5:40 /mi

Average Pace

6:08 /mi

Slowest Pace

6:55 /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

1:15:55

47% of race

Time at Steady Pace

46:06

29% of race

Time at Slower Pace

38:31

24% of race

Average Pace: 6:07 /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 mi10:17:4517:355:4017:35
5:40
#232
10K
6.21 mi10:35:2935:195:4117:44
5:42
#271
15K
9.32 mi10:53:2153:115:4217:52
5:45
#287
20K
12.43 mi11:11:581:11:485:4718:37
6:00
#333
Half
13.11 mi11:16:051:15:555:474:07
6:02
#353
25K
15.53 mi11:31:201:31:105:5215:15
6:17
#430
30K
18.64 mi11:51:361:51:265:5920:16
6:31
#535
20M
20.00 mi12:00:332:00:236:018:57
6:35
#580
21M
21.00 mi12:07:282:07:186:046:55
6:55
#616
35K
21.75 mi12:12:092:11:596:044:41
6:16
#632
23M
23.00 mi12:20:142:20:046:058:05
6:27
#639
24M
24.00 mi12:26:292:26:196:066:15
6:15
#649
40K
24.85 mi12:31:572:31:476:065:28
6:24
#653
25.2M
25.20 mi12:34:202:34:106:072:23
6:55
#656
Finish
26.22 mi12:40:422:40:326:086:22
6:15
#664
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi232232232326(Top 1%)293(Top 2%)293(Top 6%)
10K6.21 mi3.10 mi271-39244-12244-12321(Top 1%)287(Top 2%)287(Top 5%)
15K9.32 mi3.11 mi287-16259-15259-15326(Top 1%)293(Top 2%)293(Top 6%)
20K12.43 mi3.11 mi333-46301-42301-42552(Top 2%)512(Top 3%)512(Top 10%)
Half13.11 mi0.68 mi353-20320-19320-19833(Top 3%)791(Top 5%)791(Top 15%)
25K15.53 mi2.42 mi430-77395-75395-751288(Top 5%)1231(Top 8%)1231(Top 23%)
30K18.64 mi3.11 mi535-105495-100495-1001640(Top 6%)1567(Top 10%)1567(Top 30%)
20M20.00 mi1.36 mi580-45540-45540-451772(Top 7%)1688(Top 11%)1688(Top 32%)
21M21.00 mi1.00 mi616-36576-36576-361788(Top 7%)1700(Top 11%)1700(Top 32%)
35K21.75 mi0.75 mi632-16591-15591-151405(Top 5%)1331(Top 9%)1331(Top 25%)
23M23.00 mi1.25 mi639-7599-8599-81266(Top 5%)1197(Top 8%)1197(Top 23%)
24M24.00 mi1.00 mi649-10608-9608-91162(Top 4%)1099(Top 7%)1099(Top 21%)
40K24.85 mi0.85 mi653-4612-4612-41162(Top 4%)1097(Top 7%)1097(Top 21%)
25.2M25.20 mi0.35 mi656-3615-3615-31410(Top 5%)1327(Top 9%)1327(Top 25%)
Finish26.22 mi1.02 mi664-8623-8623-81415(Top 5%)1338(Top 9%)1338(Top 25%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1%
×21stories
+97ft-345ft

Overall

326

Males

293

M18-39

293

5K→10K

3.1 - 6.2 mi

Top 1%
×5stories
+79ft-138ft

Overall

321

Males

287

M18-39

287

10K→15K

6.2 - 9.3 mi

Top 1%
×3stories
+67ft-78ft

Overall

326

Males

293

M18-39

293

15K→20K

9.3 - 12.4 mi

Top 2%
×5stories
+106ft-86ft

Overall

552

Males

512

M18-39

512

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

833

Males

791

M18-39

791

Half→25K

13.1 - 15.5 mi

Top 5%
×4stories
+66ft-88ft

Overall

1288

Males

1231

M18-39

1231

25K→30K

15.5 - 18.6 mi

Top 6%
×9stories
+181ft-148ft

Overall

1640

Males

1567

M18-39

1567

30K→20M

18.6 - 20.0 mi

Top 7%
×5stories
+64ft-50ft

Overall

1772

Males

1688

M18-39

1688

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

1788

Males

1700

M18-39

1700

21M→35K

21.0 - 21.8 mi

Top 5%
×7stories
+17ft-86ft

Overall

1405

Males

1331

M18-39

1331

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1266

Males

1197

M18-39

1197

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

1162

Males

1099

M18-39

1099

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1162

Males

1097

M18-39

1097

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1410

Males

1327

M18-39

1327

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1415

Males

1338

M18-39

1338

Passing Analysis

Category:
Athletes Passed
68
Passed By
500
Net Change
-432
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#232
5K → 10K1554-39#232#271
10K → 15K420-16#271#287
15K → 20K147-46#287#333
20K → Half020-20#333#353
Half → 25K077-77#353#430
25K → 30K5110-105#430#535
30K → 20M348-45#535#580
20M → 21M137-36#580#616
21M → 35K319-16#616#632
35K → 23M1219-7#632#639
23M → 24M515-10#639#649
24M → 40K1014-4#649#653
40K → 25.2M36-3#653#656
25.2M → Finish614-8#656#664
TOTALS68500-432
📊

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