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BOSTON MARATHON 2023

Haruka Yamaguchi

Bib: 128•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 4%
Gender (Female)
#0 / 11423
Top 0.4%
Division (F18-39)
#0 / 4884
Top 0.9%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:12
Rank: #475
Start → 5K
18:12 | 5:51/mi
10K· 6.21 mi
36:50
Rank: #605 (-130)
5K → 10K
18:38 | 6:00/mi
15K· 9.32 mi
55:50
Rank: #694 (-89)
10K → 15K
19:00 | 6:07/mi
20K· 12.43 mi
1:15:26
Rank: #825 (-131)
15K → 20K
19:36 | 6:19/mi
Half· 13.11 mi
1:19:42
Rank: #857 (-32)
20K → Half
4:16 | 6:15/mi
25K· 15.53 mi
1:35:59
Rank: #1067 (-210)
Half → 25K
16:17 | 6:43/mi
30K· 18.64 mi
1:56:02
Rank: #1097 (-30)
25K → 30K
20:03 | 6:27/mi
20M
2:04:44
Rank: #1080 (+17)
30K → 20M
8:42 | 6:24/mi
21M
2:11:33
Rank: #1078 (+2)
20M → 21M
6:49 | 6:49/mi
35K· 21.75 mi
2:16:09
Rank: #1065 (+13)
21M → 35K
4:36 | 6:09/mi
23M
2:24:08
Rank: #1055 (+10)
35K → 23M
7:59 | 6:23/mi
24M
2:30:20
Rank: #1041 (+14)
23M → 24M
6:12 | 6:12/mi
40K· 24.85 mi
2:35:43
Rank: #1008 (+33)
24M → 40K
5:23 | 6:18/mi
25.2M
2:38:02
Rank: #1001 (+7)
40K → 25.2M
2:19 | 6:43/mi
Finish· 26.22 mi
2:44:17
Rank: #996 (+5)
25.2M → Finish
6:15 | 6:08/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:19:42
Pace6:05 /mi
2nd Half
Distance13.11 mi
Time1:24:35
Pace6:27 /mi
📊Positive Split: 6.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:05:1218:125:5118:12
5:51
-
10K
6.21 mi10:23:5036:505:5618:38
6:00
+0:09
15K
9.32 mi10:42:5055:505:5919:00
6:07
+0:07
20K
12.43 mi11:02:261:15:266:0419:36
6:19
+0:12
Half
13.11 mi11:06:421:19:426:054:16
6:15
-0:04
25K
15.53 mi11:22:591:35:596:1116:17
6:43
+0:28
30K
18.64 mi11:43:021:56:026:1320:03
6:27
-0:16
20M
20.00 mi11:51:442:04:446:148:42
6:24
-0:03
21M
21.00 mi11:58:332:11:336:166:49
6:49
+0:25
35K
21.75 mi12:03:092:16:096:164:36
6:09
-0:40
23M
23.00 mi12:11:082:24:086:167:59
6:23
+0:14
24M
24.00 mi12:17:202:30:206:166:12
6:12
-0:11
40K
24.85 mi12:22:432:35:436:165:23
6:18
+0:06
25.2M
25.20 mi12:25:022:38:026:162:19
6:43
+0:25
Finish
26.22 mi12:31:172:44:176:166:15
6:08
-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

5:51 /mi

Average Pace

6:16 /mi

Slowest Pace

6:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:58:49

72% of race

Time at Steady Pace

45:28

28% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:16 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:05:1218:125:5118:12
5:51
#475
10K
6.21 mi10:23:5036:505:5618:38
6:00
#605
15K
9.32 mi10:42:5055:505:5919:00
6:07
#694
20K
12.43 mi11:02:261:15:266:0419:36
6:19
#825
Half
13.11 mi11:06:421:19:426:054:16
6:15
#857
25K
15.53 mi11:22:591:35:596:1116:17
6:43
#1067
30K
18.64 mi11:43:021:56:026:1320:03
6:27
#1097
20M
20.00 mi11:51:442:04:446:148:42
6:24
#1080
21M
21.00 mi11:58:332:11:336:166:49
6:49
#1078
35K
21.75 mi12:03:092:16:096:164:36
6:09
#1065
23M
23.00 mi12:11:082:24:086:167:59
6:23
#1055
24M
24.00 mi12:17:202:30:206:166:12
6:12
#1041
40K
24.85 mi12:22:432:35:436:165:23
6:18
#1008
25.2M
25.20 mi12:25:022:38:026:162:19
6:43
#1001
Finish
26.22 mi12:31:172:44:176:166:15
6:08
#996
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi47536361014(Top 4%)49(Top 0.4%)49(Top 1%)
10K6.21 mi3.10 mi605-13042-642-6796(Top 3%)45(Top 0.4%)45(Top 0.9%)
15K9.32 mi3.11 mi694-8943-143-11014(Top 4%)49(Top 0.4%)49(Top 1%)
20K12.43 mi3.11 mi825-13146-346-31429(Top 5%)62(Top 0.5%)62(Top 1%)
Half13.11 mi0.68 mi857-3246461639(Top 6%)64(Top 0.6%)64(Top 1%)
25K15.53 mi2.42 mi1067-21054-854-83508(Top 13%)185(Top 2%)185(Top 4%)
30K18.64 mi3.11 mi1097-3051+351+31394(Top 5%)59(Top 0.5%)59(Top 1%)
20M20.00 mi1.36 mi1080+1751511161(Top 4%)53(Top 0.5%)53(Top 1%)
21M21.00 mi1.00 mi1078+252-152-11481(Top 6%)67(Top 0.6%)67(Top 1%)
35K21.75 mi0.75 mi1065+1351+151+11116(Top 4%)53(Top 0.5%)53(Top 1%)
23M23.00 mi1.25 mi1055+1051511052(Top 4%)55(Top 0.5%)55(Top 1%)
24M24.00 mi1.00 mi1041+1450+150+11049(Top 4%)55(Top 0.5%)55(Top 1%)
40K24.85 mi0.85 mi1008+3349+149+1911(Top 3%)48(Top 0.4%)48(Top 1.0%)
25.2M25.20 mi0.35 mi1001+74949983(Top 4%)46(Top 0.4%)46(Top 0.9%)
Finish26.22 mi1.02 mi996+548+148+11105(Top 4%)52(Top 0.5%)52(Top 1%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 4%
×21stories
+97ft-345ft

Overall

1014

Females

49

F18-39

49

5K→10K

3.1 - 6.2 mi

Top 3%
×5stories
+79ft-138ft

Overall

796

Females

45

F18-39

45

10K→15K

6.2 - 9.3 mi

Top 4%
×3stories
+67ft-78ft

Overall

1014

Females

49

F18-39

49

15K→20K

9.3 - 12.4 mi

Top 5%
×5stories
+106ft-86ft

Overall

1429

Females

62

F18-39

62

20K→Half

12.4 - 13.1 mi

Top 6%
×2stories
+19ft-37ft

Overall

1639

Females

64

F18-39

64

Half→25K

13.1 - 15.5 mi

Top 13%
×4stories
+66ft-88ft

Overall

3508

Females

185

F18-39

185

25K→30K

15.5 - 18.6 mi

Top 5%
×9stories
+181ft-148ft

Overall

1394

Females

59

F18-39

59

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

1161

Females

53

F18-39

53

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1481

Females

67

F18-39

67

21M→35K

21.0 - 21.8 mi

Top 4%
×7stories
+17ft-86ft

Overall

1116

Females

53

F18-39

53

35K→23M

21.8 - 23.0 mi

Top 4%
×5stories
+23ft-63ft

Overall

1052

Females

55

F18-39

55

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

1049

Females

55

F18-39

55

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

911

Females

48

F18-39

48

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

983

Females

46

F18-39

46

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2stories
+22ft-21ft

Overall

1105

Females

52

F18-39

52

Passing Analysis

Category:
Athletes Passed
215
Passed By
736
Net Change
-521
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#475
5K → 10K4134-130#475#605
10K → 15K291-89#605#694
15K → 20K5136-131#694#825
20K → Half032-32#825#857
Half → 25K3213-210#857#1067
25K → 30K2858-30#1067#1097
30K → 20M258+17#1097#1080
20M → 21M2321+2#1080#1078
21M → 35K163+13#1078#1065
35K → 23M2111+10#1065#1055
23M → 24M217+14#1055#1041
24M → 40K385+33#1041#1008
40K → 25.2M114+7#1008#1001
25.2M → Finish1813+5#1001#996
TOTALS215736-521
📊

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