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BOSTON MARATHON 2024

Keiko Sasakawa

Bib: 22295•F

NE

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Masters (Masters Women)
#0 / 6263
Division (F60-64)
#0 / 549
Top 36%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:32
Rank: #18006
Start → 5K
26:32 | 8:32/mi
10K· 6.21 mi
53:12
Rank: #17883 (+123)
5K → 10K
26:40 | 8:35/mi
15K· 9.32 mi
1:20:31
Rank: #17877 (+6)
10K → 15K
27:19 | 8:48/mi
20K· 12.43 mi
1:48:08
Rank: #17528 (+349)
15K → 20K
27:37 | 8:53/mi
Half· 13.11 mi
1:54:03
Rank: #17452 (+76)
20K → Half
5:55 | 8:40/mi
25K· 15.53 mi
2:16:21
Rank: #17241 (+211)
Half → 25K
22:18 | 9:12/mi
30K· 18.64 mi
2:46:05
Rank: #16934 (+307)
25K → 30K
29:44 | 9:34/mi
20M
2:59:23
Rank: #16861 (+73)
30K → 20M
13:18 | 9:47/mi
21M
3:09:37
Rank: #16685 (+176)
20M → 21M
10:14 | 10:14/mi
35K· 21.75 mi
3:17:00
Rank: #16684 (+1)
21M → 35K
7:23 | 9:52/mi
23M
3:32:45
Rank: #17220 (-536)
35K → 23M
15:45 | 12:35/mi
24M
3:46:56
Rank: #17819 (-599)
23M → 24M
14:11 | 14:11/mi
40K· 24.85 mi
3:57:20
Rank: #17965 (-146)
24M → 40K
10:24 | 12:10/mi
25.2M
4:03:11
Rank: #18168 (-203)
40K → 25.2M
5:51 | 16:58/mi
Finish· 26.22 mi
4:18:03
Rank: #18750 (-582)
25.2M → Finish
14:52 | 14:35/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:03
Pace8:42 /mi
2nd Half
Distance13.11 mi
Time2:24:00
Pace10:59 /mi
📊Positive Split: 26.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:1526:328:3226:32
8:32
-
10K
6.21 mi11:50:5553:128:3426:40
8:35
+0:03
15K
9.32 mi12:18:141:20:318:3827:19
8:48
+0:13
20K
12.43 mi12:45:511:48:088:4227:37
8:53
+0:05
Half
13.11 mi12:51:461:54:038:425:55
8:40
-0:13
25K
15.53 mi13:14:042:16:218:4722:18
9:12
+0:32
30K
18.64 mi13:43:482:46:058:5529:44
9:34
+0:22
20M
20.00 mi13:57:062:59:238:5813:18
9:47
+0:13
21M
21.00 mi14:07:203:09:379:0210:14
10:14
+0:27
35K
21.75 mi14:14:433:17:009:037:23
9:52
-0:22
23M
23.00 mi14:30:283:32:459:1515:45
12:35
+2:43
24M
24.00 mi14:44:393:46:569:2714:11
14:11
+1:36
40K
24.85 mi14:55:033:57:209:3310:24
12:10
-2:01
25.2M
25.20 mi15:00:544:03:119:395:51
16:58
+4:48
Finish
26.22 mi15:15:464:18:039:5114:52
14:35
-2:23

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

8:32 /mi

Average Pace

9:51 /mi

Slowest Pace

16:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

3:17:00

76% of race

Time at Slower Pace

1:01:03

24% of race

Average Pace: 9:51 /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 mi11:24:1526:328:3226:32
8:32
#18006
10K
6.21 mi11:50:5553:128:3426:40
8:35
#17883
15K
9.32 mi12:18:141:20:318:3827:19
8:48
#17877
20K
12.43 mi12:45:511:48:088:4227:37
8:53
#17528
Half
13.11 mi12:51:461:54:038:425:55
8:40
#17452
25K
15.53 mi13:14:042:16:218:4722:18
9:12
#17241
30K
18.64 mi13:43:482:46:058:5529:44
9:34
#16934
20M
20.00 mi13:57:062:59:238:5813:18
9:47
#16861
21M
21.00 mi14:07:203:09:379:0210:14
10:14
#16685
35K
21.75 mi14:14:433:17:009:037:23
9:52
#16684
23M
23.00 mi14:30:283:32:459:1515:45
12:35
#17220
24M
24.00 mi14:44:393:46:569:2714:11
14:11
#17819
40K
24.85 mi14:55:033:57:209:3310:24
12:10
#17965
25.2M
25.20 mi15:00:544:03:119:395:51
16:58
#18168
Finish
26.22 mi15:15:464:18:039:5114:52
14:35
#18750
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi180066766676617950(Top 70%)6691(Top 61%)6691(Top 1219%)
10K6.21 mi3.10 mi17883+1236667+996667+9917768(Top 70%)6593(Top 60%)6593(Top 1201%)
15K9.32 mi3.11 mi17877+66662+56662+517950(Top 70%)6691(Top 61%)6691(Top 1219%)
20K12.43 mi3.11 mi17528+3496476+1866476+18616852(Top 66%)6088(Top 56%)6088(Top 1109%)
Half13.11 mi0.68 mi17452+766443+336443+3316751(Top 66%)6088(Top 56%)6088(Top 1109%)
25K15.53 mi2.42 mi17241+2116336+1076336+10716413(Top 64%)5950(Top 54%)5950(Top 1084%)
30K18.64 mi3.11 mi16934+3076226+1106226+11015750(Top 62%)5831(Top 53%)5831(Top 1062%)
20M20.00 mi1.36 mi16861+736216+106216+1015717(Top 62%)6063(Top 56%)6063(Top 1104%)
21M21.00 mi1.00 mi16685+1766146+706146+7013894(Top 54%)5269(Top 48%)5269(Top 960%)
35K21.75 mi0.75 mi16684+16163-176163-1716764(Top 66%)6742(Top 62%)6742(Top 1228%)
23M23.00 mi1.25 mi17220-5366495-3326495-33221846(Top 86%)9291(Top 85%)9291(Top 1692%)
24M24.00 mi1.00 mi17819-5996866-3716866-37124331(Top 95%)10502(Top 96%)10502(Top 1913%)
40K24.85 mi0.85 mi17965-1466966-1006966-10020771(Top 81%)8887(Top 81%)8887(Top 1619%)
25.2M25.20 mi0.35 mi18168-2037080-1147080-11424617(Top 96%)10625(Top 97%)10625(Top 1935%)
Finish26.22 mi1.02 mi18750-5827411-3317411-33125107(Top 98%)10815(Top 99%)10815(Top 1970%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21stories
+97ft-345ft

Overall

17950

Females

6691

F60-64

6691

5K→10K

3.1 - 6.2 mi

Top 70%
×5stories
+79ft-138ft

Overall

17768

Females

6593

F60-64

6593

10K→15K

6.2 - 9.3 mi

Top 70%
×3stories
+67ft-78ft

Overall

17950

Females

6691

F60-64

6691

15K→20K

9.3 - 12.4 mi

Top 66%
×5stories
+106ft-86ft

Overall

16852

Females

6088

F60-64

6088

20K→Half

12.4 - 13.1 mi

Top 66%
×2stories
+19ft-37ft

Overall

16751

Females

6088

F60-64

6088

Half→25K

13.1 - 15.5 mi

Top 64%
×4stories
+66ft-88ft

Overall

16413

Females

5950

F60-64

5950

25K→30K

15.5 - 18.6 mi

Top 62%
×9stories
+181ft-148ft

Overall

15750

Females

5831

F60-64

5831

30K→20M

18.6 - 20.0 mi

Top 62%
×5stories
+64ft-50ft

Overall

15717

Females

6063

F60-64

6063

20M→21M

20.0 - 21.0 mi

Top 54%
×8stories
+106ft-24ft

Overall

13894

Females

5269

F60-64

5269

21M→35K

21.0 - 21.8 mi

Top 66%
×7stories
+17ft-86ft

Overall

16764

Females

6742

F60-64

6742

35K→23M

21.8 - 23.0 mi

Top 86%
×5stories
+23ft-63ft

Overall

21846

Females

9291

F60-64

9291

23M→24M

23.0 - 24.0 mi

Top 95%
×6stories
+12ft-82ft

Overall

24331

Females

10502

F60-64

10502

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

20771

Females

8887

F60-64

8887

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1story
+13ft-16ft

Overall

24617

Females

10625

F60-64

10625

25.2M→Finish

25.2 - 26.2 mi

Top 98%
×2stories
+22ft-21ft

Overall

25107

Females

10815

F60-64

10815

Passing Analysis

Category:
Athletes Passed
2309
Passed By
3053
Net Change
-744
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18006
5K → 10K337214+123#18006#17883
10K → 15K235229+6#17883#17877
15K → 20K43586+349#17877#17528
20K → Half8812+76#17528#17452
Half → 25K30695+211#17452#17241
25K → 30K411104+307#17241#16934
30K → 20M15380+73#16934#16861
20M → 21M20630+176#16861#16685
21M → 35K5958+1#16685#16684
35K → 23M21557-536#16684#17220
23M → 24M7606-599#17220#17819
24M → 40K31177-146#17819#17965
40K → 25.2M6209-203#17965#18168
25.2M → Finish14596-582#18168#18750
TOTALS23093053-744
📊

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