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BOSTON MARATHON 2023

Kaeko Sakamoto

Bib: 19763•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F60-64)
#0 / 527
Top 35%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:16
Rank: #9554
Start → 5K
23:16 | 7:29/mi
10K· 6.21 mi
48:11
Rank: #12330 (-2776)
5K → 10K
24:55 | 8:01/mi
15K· 9.32 mi
1:15:39
Rank: #15237 (-2907)
10K → 15K
27:28 | 8:50/mi
20K· 12.43 mi
1:47:20
Rank: #18434 (-3197)
15K → 20K
31:41 | 10:12/mi
Half· 13.11 mi
1:53:10
Rank: #18404 (+30)
20K → Half
5:50 | 8:33/mi
25K· 15.53 mi
2:18:02
Rank: #19549 (-1145)
Half → 25K
24:52 | 10:15/mi
30K· 18.64 mi
2:49:05
Rank: #19924 (-375)
25K → 30K
31:03 | 10:00/mi
20M
3:02:27
Rank: #19919 (+5)
30K → 20M
13:22 | 9:50/mi
21M
3:13:11
Rank: #19946 (-27)
20M → 21M
10:44 | 10:44/mi
35K· 21.75 mi
3:20:43
Rank: #20019 (-73)
21M → 35K
7:32 | 10:04/mi
23M
3:33:26
Rank: #20058 (-39)
35K → 23M
12:43 | 10:09/mi
24M
3:43:00
Rank: #20051 (+7)
23M → 24M
9:34 | 9:34/mi
40K· 24.85 mi
3:51:29
Rank: #20029 (+22)
24M → 40K
8:29 | 9:55/mi
25.2M
3:55:18
Rank: #20037 (-8)
40K → 25.2M
3:49 | 11:04/mi
Finish· 26.22 mi
4:05:06
Rank: #20045 (-8)
25.2M → Finish
9:48 | 9:37/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:10
Pace8:38 /mi
2nd Half
Distance13.11 mi
Time2:11:56
Pace10:04 /mi
📊Positive Split: 16.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:2923:167:2923:16
7:29
-
10K
6.21 mi11:39:2448:117:4524:55
8:01
+0:32
15K
9.32 mi12:06:521:15:398:0727:28
8:50
+0:49
20K
12.43 mi12:38:331:47:208:3831:41
10:12
+1:22
Half
13.11 mi12:44:231:53:108:385:50
8:33
-1:39
25K
15.53 mi13:09:152:18:028:5324:52
10:15
+1:42
30K
18.64 mi13:40:182:49:059:0431:03
10:00
-0:15
20M
20.00 mi13:53:403:02:279:0713:22
9:50
-0:10
21M
21.00 mi14:04:243:13:119:1210:44
10:44
+0:54
35K
21.75 mi14:11:563:20:439:147:32
10:04
-0:40
23M
23.00 mi14:24:393:33:269:1712:43
10:09
+0:05
24M
24.00 mi14:34:133:43:009:189:34
9:34
-0:35
40K
24.85 mi14:42:423:51:299:198:29
9:55
+0:21
25.2M
25.20 mi14:46:313:55:189:203:49
11:04
+1:09
Finish
26.22 mi14:56:194:05:069:219:48
9:37
-1:27

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

7:29 /mi

Average Pace

9:21 /mi

Slowest Pace

11:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:21:29

33% of race

Time at Steady Pace

2:29:04

61% of race

Time at Slower Pace

14:33

6% of race

Average Pace: 9:21 /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 mi11:14:2923:167:2923:16
7:29
#9554
10K
6.21 mi11:39:2448:117:4524:55
8:01
#12330
15K
9.32 mi12:06:521:15:398:0727:28
8:50
#15237
20K
12.43 mi12:38:331:47:208:3831:41
10:12
#18434
Half
13.11 mi12:44:231:53:108:385:50
8:33
#18404
25K
15.53 mi13:09:152:18:028:5324:52
10:15
#19549
30K
18.64 mi13:40:182:49:059:0431:03
10:00
#19924
20M
20.00 mi13:53:403:02:279:0713:22
9:50
#19919
21M
21.00 mi14:04:243:13:119:1210:44
10:44
#19946
35K
21.75 mi14:11:563:20:439:147:32
10:04
#20019
23M
23.00 mi14:24:393:33:269:1712:43
10:09
#20058
24M
24.00 mi14:34:133:43:009:189:34
9:34
#20051
40K
24.85 mi14:42:423:51:299:198:29
9:55
#20029
25.2M
25.20 mi14:46:313:55:189:203:49
11:04
#20037
Finish
26.22 mi14:56:194:05:069:219:48
9:37
#20045
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi95541647164719749(Top 74%)7536(Top 66%)7536(Top 1430%)
10K6.21 mi3.10 mi12330-27763060-14133060-141314972(Top 56%)4659(Top 41%)4659(Top 884%)
15K9.32 mi3.11 mi15237-29074811-17514811-175119749(Top 74%)7536(Top 66%)7536(Top 1430%)
20K12.43 mi3.11 mi18434-31976771-19606771-196023287(Top 87%)9505(Top 83%)9505(Top 1804%)
Half13.11 mi0.68 mi18404+306749+226749+2218102(Top 68%)6566(Top 57%)6566(Top 1246%)
25K15.53 mi2.42 mi19549-11457454-7057454-70522751(Top 85%)9246(Top 81%)9246(Top 1754%)
30K18.64 mi3.11 mi19924-3757688-2347688-23421018(Top 79%)8354(Top 73%)8354(Top 1585%)
20M20.00 mi1.36 mi19919+57693-57693-519974(Top 75%)7835(Top 69%)7835(Top 1487%)
21M21.00 mi1.00 mi19946-277716-237716-2320228(Top 76%)8049(Top 70%)8049(Top 1527%)
35K21.75 mi0.75 mi20019-737765-497765-4921489(Top 81%)8755(Top 77%)8755(Top 1661%)
23M23.00 mi1.25 mi20058-397806-417806-4120457(Top 77%)8205(Top 72%)8205(Top 1557%)
24M24.00 mi1.00 mi20051+77805+17805+119458(Top 73%)7697(Top 67%)7697(Top 1461%)
40K24.85 mi0.85 mi20029+227797+87797+819767(Top 74%)7931(Top 69%)7931(Top 1505%)
25.2M25.20 mi0.35 mi20037-87812-157812-1520621(Top 77%)8382(Top 73%)8382(Top 1591%)
Finish26.22 mi1.02 mi20045-87824-127824-1220550(Top 77%)8318(Top 73%)8318(Top 1578%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21stories
+97ft-345ft

Overall

19749

Females

7536

F60-64

7536

5K→10K

3.1 - 6.2 mi

Top 56%
×5stories
+79ft-138ft

Overall

14972

Females

4659

F60-64

4659

10K→15K

6.2 - 9.3 mi

Top 74%
×3stories
+67ft-78ft

Overall

19749

Females

7536

F60-64

7536

15K→20K

9.3 - 12.4 mi

Top 87%
×5stories
+106ft-86ft

Overall

23287

Females

9505

F60-64

9505

20K→Half

12.4 - 13.1 mi

Top 68%
×2stories
+19ft-37ft

Overall

18102

Females

6566

F60-64

6566

Half→25K

13.1 - 15.5 mi

Top 85%
×4stories
+66ft-88ft

Overall

22751

Females

9246

F60-64

9246

25K→30K

15.5 - 18.6 mi

Top 79%
×9stories
+181ft-148ft

Overall

21018

Females

8354

F60-64

8354

30K→20M

18.6 - 20.0 mi

Top 75%
×5stories
+64ft-50ft

Overall

19974

Females

7835

F60-64

7835

20M→21M

20.0 - 21.0 mi

Top 76%
×8stories
+106ft-24ft

Overall

20228

Females

8049

F60-64

8049

21M→35K

21.0 - 21.8 mi

Top 81%
×7stories
+17ft-86ft

Overall

21489

Females

8755

F60-64

8755

35K→23M

21.8 - 23.0 mi

Top 77%
×5stories
+23ft-63ft

Overall

20457

Females

8205

F60-64

8205

23M→24M

23.0 - 24.0 mi

Top 73%
×6stories
+12ft-82ft

Overall

19458

Females

7697

F60-64

7697

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

19767

Females

7931

F60-64

7931

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

20621

Females

8382

F60-64

8382

25.2M→Finish

25.2 - 26.2 mi

Top 77%
×2stories
+22ft-21ft

Overall

20550

Females

8318

F60-64

8318

Passing Analysis

Category:
Athletes Passed
558
Passed By
11047
Net Change
-10491
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9554
5K → 10K92783-2776#9554#12330
10K → 15K32910-2907#12330#15237
15K → 20K43201-3197#15237#18434
20K → Half5323+30#18434#18404
Half → 25K91154-1145#18404#19549
25K → 30K70445-375#19549#19924
30K → 20M8378+5#19924#19919
20M → 21M78105-27#19919#19946
21M → 35K28101-73#19946#20019
35K → 23M64103-39#20019#20058
23M → 24M4437+7#20058#20051
24M → 40K5634+22#20051#20029
40K → 25.2M1624-8#20029#20037
25.2M → Finish4149-8#20037#20045
TOTALS55811047-10491
📊

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