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BOSTON MARATHON 2023

Kaori Takai

Bib: 19248•F

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 35%
Masters (Masters Women)
#0 / 6539
Top 21%
Division (F50-54)
#0 / 1207
Top 13%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:38
Rank: #15818
Start → 5K
25:38 | 8:15/mi
10K· 6.21 mi
50:54
Rank: #15758 (+60)
5K → 10K
25:16 | 8:08/mi
15K· 9.32 mi
1:16:16
Rank: #15696 (+62)
10K → 15K
25:22 | 8:10/mi
20K· 12.43 mi
1:41:34
Rank: #15395 (+301)
15K → 20K
25:18 | 8:09/mi
Half· 13.11 mi
1:47:07
Rank: #15385 (+10)
20K → Half
5:33 | 8:08/mi
25K· 15.53 mi
2:07:02
Rank: #15193 (+192)
Half → 25K
19:55 | 8:13/mi
30K· 18.64 mi
2:32:53
Rank: #14823 (+370)
25K → 30K
25:51 | 8:19/mi
20M
2:44:09
Rank: #14615 (+208)
30K → 20M
11:16 | 8:17/mi
21M
2:52:47
Rank: #14394 (+221)
20M → 21M
8:38 | 8:38/mi
35K· 21.75 mi
2:58:41
Rank: #14279 (+115)
21M → 35K
5:54 | 7:53/mi
23M
3:08:50
Rank: #14030 (+249)
35K → 23M
10:09 | 8:06/mi
24M
3:16:41
Rank: #13841 (+189)
23M → 24M
7:51 | 7:51/mi
40K· 24.85 mi
3:23:27
Rank: #13650 (+191)
24M → 40K
6:46 | 7:55/mi
25.2M
3:26:23
Rank: #13582 (+68)
40K → 25.2M
2:56 | 8:30/mi
Finish· 26.22 mi
3:34:17
Rank: #13426 (+156)
25.2M → Finish
7:54 | 7:45/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:47:07
Pace8:10 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:47:10
Pace8:11 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:4025:388:1525:38
8:15
-
10K
6.21 mi11:42:5650:548:1125:16
8:08
-0:07
15K
9.32 mi12:08:181:16:168:1125:22
8:10
+0:02
20K
12.43 mi12:33:361:41:348:1025:18
8:09
-0:01
Half
13.11 mi12:39:091:47:078:105:33
8:08
-0:01
25K
15.53 mi12:59:042:07:028:1119:55
8:13
+0:05
30K
18.64 mi13:24:552:32:538:1225:51
8:19
+0:06
20M
20.00 mi13:36:112:44:098:1211:16
8:17
-0:02
21M
21.00 mi13:44:492:52:478:148:38
8:38
+0:21
35K
21.75 mi13:50:432:58:418:135:54
7:53
-0:45
23M
23.00 mi14:00:523:08:508:1310:09
8:06
+0:13
24M
24.00 mi14:08:433:16:418:127:51
7:51
-0:15
40K
24.85 mi14:15:293:23:278:116:46
7:55
+0:04
25.2M
25.20 mi14:18:253:26:238:112:56
8:30
+0:35
Finish
26.22 mi14:26:193:34:178:117:54
7:45
-0:45

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

7:45 /mi

Average Pace

8:11 /mi

Slowest Pace

8:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:25:39

96% of race

Time at Steady Pace

8:38

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:10 /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 mi11:17:4025:388:1525:38
8:15
#15818
10K
6.21 mi11:42:5650:548:1125:16
8:08
#15758
15K
9.32 mi12:08:181:16:168:1125:22
8:10
#15696
20K
12.43 mi12:33:361:41:348:1025:18
8:09
#15395
Half
13.11 mi12:39:091:47:078:105:33
8:08
#15385
25K
15.53 mi12:59:042:07:028:1119:55
8:13
#15193
30K
18.64 mi13:24:552:32:538:1225:51
8:19
#14823
20M
20.00 mi13:36:112:44:098:1211:16
8:17
#14615
21M
21.00 mi13:44:492:52:478:148:38
8:38
#14394
35K
21.75 mi13:50:432:58:418:135:54
7:53
#14279
23M
23.00 mi14:00:523:08:508:1310:09
8:06
#14030
24M
24.00 mi14:08:433:16:418:127:51
7:51
#13841
40K
24.85 mi14:15:293:23:278:116:46
7:55
#13650
25.2M
25.20 mi14:18:253:26:238:112:56
8:30
#13582
Finish
26.22 mi14:26:193:34:178:117:54
7:45
#13426
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi158185162516215610(Top 59%)5052(Top 44%)5052(Top 419%)
10K6.21 mi3.10 mi15758+605130+325130+3215763(Top 59%)5118(Top 45%)5118(Top 424%)
15K9.32 mi3.11 mi15696+625093+375093+3715610(Top 59%)5052(Top 44%)5052(Top 419%)
20K12.43 mi3.11 mi15395+3014923+1704923+17014549(Top 55%)4429(Top 39%)4429(Top 367%)
Half13.11 mi0.68 mi15385+104927-44927-415342(Top 58%)4876(Top 43%)4876(Top 404%)
25K15.53 mi2.42 mi15193+1924835+924835+9214336(Top 54%)4407(Top 39%)4407(Top 365%)
30K18.64 mi3.11 mi14823+3704634+2014634+20113155(Top 49%)3843(Top 34%)3843(Top 318%)
20M20.00 mi1.36 mi14615+2084534+1004534+10012331(Top 46%)3482(Top 30%)3482(Top 288%)
21M21.00 mi1.00 mi14394+2214430+1044430+10411302(Top 42%)3041(Top 27%)3041(Top 252%)
35K21.75 mi0.75 mi14279+1154376+544376+5411367(Top 43%)3074(Top 27%)3074(Top 255%)
23M23.00 mi1.25 mi14030+2494245+1314245+13110552(Top 40%)2801(Top 25%)2801(Top 232%)
24M24.00 mi1.00 mi13841+1894158+874158+8710203(Top 38%)2696(Top 24%)2696(Top 223%)
40K24.85 mi0.85 mi13650+1914051+1074051+1079516(Top 36%)2431(Top 21%)2431(Top 201%)
25.2M25.20 mi0.35 mi13582+684016+354016+359695(Top 36%)2578(Top 23%)2578(Top 214%)
Finish26.22 mi1.02 mi13426+1563951+653951+6510365(Top 39%)2882(Top 25%)2882(Top 239%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21stories
+97ft-345ft

Overall

15610

Females

5052

F50-54

5052

5K→10K

3.1 - 6.2 mi

Top 59%
×5stories
+79ft-138ft

Overall

15763

Females

5118

F50-54

5118

10K→15K

6.2 - 9.3 mi

Top 59%
×3stories
+67ft-78ft

Overall

15610

Females

5052

F50-54

5052

15K→20K

9.3 - 12.4 mi

Top 55%
×5stories
+106ft-86ft

Overall

14549

Females

4429

F50-54

4429

20K→Half

12.4 - 13.1 mi

Top 58%
×2stories
+19ft-37ft

Overall

15342

Females

4876

F50-54

4876

Half→25K

13.1 - 15.5 mi

Top 54%
×4stories
+66ft-88ft

Overall

14336

Females

4407

F50-54

4407

25K→30K

15.5 - 18.6 mi

Top 49%
×9stories
+181ft-148ft

Overall

13155

Females

3843

F50-54

3843

30K→20M

18.6 - 20.0 mi

Top 46%
×5stories
+64ft-50ft

Overall

12331

Females

3482

F50-54

3482

20M→21M

20.0 - 21.0 mi

Top 42%
×8stories
+106ft-24ft

Overall

11302

Females

3041

F50-54

3041

21M→35K

21.0 - 21.8 mi

Top 43%
×7stories
+17ft-86ft

Overall

11367

Females

3074

F50-54

3074

35K→23M

21.8 - 23.0 mi

Top 40%
×5stories
+23ft-63ft

Overall

10552

Females

2801

F50-54

2801

23M→24M

23.0 - 24.0 mi

Top 38%
×6stories
+12ft-82ft

Overall

10203

Females

2696

F50-54

2696

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

9516

Females

2431

F50-54

2431

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9695

Females

2578

F50-54

2578

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2stories
+22ft-21ft

Overall

10365

Females

2882

F50-54

2882

Passing Analysis

Category:
Athletes Passed
3029
Passed By
637
Net Change
+2392
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15818
5K → 10K326266+60#15818#15758
10K → 15K215153+62#15758#15696
15K → 20K35251+301#15696#15395
20K → Half4333+10#15395#15385
Half → 25K23644+192#15385#15193
25K → 30K40939+370#15193#14823
30K → 20M2146+208#14823#14615
20M → 21M23110+221#14615#14394
21M → 35K1183+115#14394#14279
35K → 23M2578+249#14279#14030
23M → 24M1923+189#14030#13841
24M → 40K1921+191#13841#13650
40K → 25.2M702+68#13650#13582
25.2M → Finish17418+156#13582#13426
TOTALS3029637+2392
📊

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