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BOSTON MARATHON 2023

Naomi Yokoi

Bib: 23504•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F55-59)
#0 / 815
Top 41%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:49
Rank: #18439
Start → 5K
26:49 | 8:38/mi
10K· 6.21 mi
53:28
Rank: #18550 (-111)
5K → 10K
26:39 | 8:35/mi
15K· 9.32 mi
1:20:48
Rank: #18868 (-318)
10K → 15K
27:20 | 8:48/mi
20K· 12.43 mi
1:49:14
Rank: #19280 (-412)
15K → 20K
28:26 | 9:09/mi
Half· 13.11 mi
1:55:16
Rank: #19279 (+1)
20K → Half
6:02 | 8:51/mi
25K· 15.53 mi
2:17:31
Rank: #19372 (-93)
Half → 25K
22:15 | 9:11/mi
30K· 18.64 mi
2:47:33
Rank: #19541 (-169)
25K → 30K
30:02 | 9:40/mi
20M
3:00:33
Rank: #19489 (+52)
30K → 20M
13:00 | 9:34/mi
21M
3:11:07
Rank: #19513 (-24)
20M → 21M
10:34 | 10:34/mi
35K· 21.75 mi
3:17:52
Rank: #19457 (+56)
21M → 35K
6:45 | 9:01/mi
23M
3:29:51
Rank: #19419 (+38)
35K → 23M
11:59 | 9:34/mi
24M
3:38:55
Rank: #19329 (+90)
23M → 24M
9:04 | 9:04/mi
40K· 24.85 mi
3:46:45
Rank: #19242 (+87)
24M → 40K
7:50 | 9:10/mi
25.2M
3:50:09
Rank: #19203 (+39)
40K → 25.2M
3:24 | 9:52/mi
Finish· 26.22 mi
3:58:49
Rank: #19098 (+105)
25.2M → Finish
8:40 | 8:30/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:16
Pace8:48 /mi
2nd Half
Distance13.11 mi
Time2:03:33
Pace9:25 /mi
📊Positive Split: 7.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:4826:498:3826:49
8:38
-
10K
6.21 mi11:48:2753:288:3626:39
8:35
-0:03
15K
9.32 mi12:15:471:20:488:4027:20
8:48
+0:13
20K
12.43 mi12:44:131:49:148:4728:26
9:09
+0:21
Half
13.11 mi12:50:151:55:168:486:02
8:51
-0:18
25K
15.53 mi13:12:302:17:318:5122:15
9:11
+0:20
30K
18.64 mi13:42:322:47:338:5930:02
9:40
+0:29
20M
20.00 mi13:55:323:00:339:0213:00
9:34
-0:06
21M
21.00 mi14:06:063:11:079:0610:34
10:34
+1:00
35K
21.75 mi14:12:513:17:529:066:45
9:01
-1:33
23M
23.00 mi14:24:503:29:519:0711:59
9:34
+0:33
24M
24.00 mi14:33:543:38:559:079:04
9:04
-0:30
40K
24.85 mi14:41:443:46:459:077:50
9:10
+0:06
25.2M
25.20 mi14:45:083:50:099:083:24
9:52
+0:42
Finish
26.22 mi14:53:483:58:499:078:40
8:30
-1:22

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

8:30 /mi

Average Pace

9:07 /mi

Slowest Pace

10:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:35:30

40% of race

Time at Steady Pace

1:14:20

31% of race

Time at Slower Pace

1:08:59

29% of race

Average Pace: 9:06 /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 mi11:21:4826:498:3826:49
8:38
#18439
10K
6.21 mi11:48:2753:288:3626:39
8:35
#18550
15K
9.32 mi12:15:471:20:488:4027:20
8:48
#18868
20K
12.43 mi12:44:131:49:148:4728:26
9:09
#19280
Half
13.11 mi12:50:151:55:168:486:02
8:51
#19279
25K
15.53 mi13:12:302:17:318:5122:15
9:11
#19372
30K
18.64 mi13:42:322:47:338:5930:02
9:40
#19541
20M
20.00 mi13:55:323:00:339:0213:00
9:34
#19489
21M
21.00 mi14:06:063:11:079:0610:34
10:34
#19513
35K
21.75 mi14:12:513:17:529:066:45
9:01
#19457
23M
23.00 mi14:24:503:29:519:0711:59
9:34
#19419
24M
24.00 mi14:33:543:38:559:079:04
9:04
#19329
40K
24.85 mi14:41:443:46:459:077:50
9:10
#19242
25.2M
25.20 mi14:45:083:50:099:083:24
9:52
#19203
Finish
26.22 mi14:53:483:58:499:078:40
8:30
#19098
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi184396840684019505(Top 73%)7393(Top 65%)7393(Top 907%)
10K6.21 mi3.10 mi18550-1116858-186858-1818738(Top 70%)6925(Top 61%)6925(Top 850%)
15K9.32 mi3.11 mi18868-3187048-1907048-19019505(Top 73%)7393(Top 65%)7393(Top 907%)
20K12.43 mi3.11 mi19280-4127291-2437291-24320371(Top 77%)7883(Top 69%)7883(Top 967%)
Half13.11 mi0.68 mi19279+17289+27289+219751(Top 74%)7522(Top 66%)7522(Top 923%)
25K15.53 mi2.42 mi19372-937342-537342-5319740(Top 74%)7552(Top 66%)7552(Top 927%)
30K18.64 mi3.11 mi19541-1697452-1107452-11020027(Top 75%)7781(Top 68%)7781(Top 955%)
20M20.00 mi1.36 mi19489+527444+87444+819114(Top 72%)7355(Top 64%)7355(Top 902%)
21M21.00 mi1.00 mi19513-247465-217465-2119805(Top 74%)7819(Top 68%)7819(Top 959%)
35K21.75 mi0.75 mi19457+567438+277438+2718030(Top 68%)6861(Top 60%)6861(Top 842%)
23M23.00 mi1.25 mi19419+387415+237415+2318628(Top 70%)7205(Top 63%)7205(Top 884%)
24M24.00 mi1.00 mi19329+907371+447371+4417557(Top 66%)6658(Top 58%)6658(Top 817%)
40K24.85 mi0.85 mi19242+877336+357336+3516961(Top 64%)6385(Top 56%)6385(Top 783%)
25.2M25.20 mi0.35 mi19203+397318+187318+1816887(Top 63%)6378(Top 56%)6378(Top 783%)
Finish26.22 mi1.02 mi19098+1057266+527266+5215500(Top 58%)5547(Top 49%)5547(Top 681%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21stories
+97ft-345ft

Overall

19505

Females

7393

F55-59

7393

5K→10K

3.1 - 6.2 mi

Top 70%
×5stories
+79ft-138ft

Overall

18738

Females

6925

F55-59

6925

10K→15K

6.2 - 9.3 mi

Top 73%
×3stories
+67ft-78ft

Overall

19505

Females

7393

F55-59

7393

15K→20K

9.3 - 12.4 mi

Top 77%
×5stories
+106ft-86ft

Overall

20371

Females

7883

F55-59

7883

20K→Half

12.4 - 13.1 mi

Top 74%
×2stories
+19ft-37ft

Overall

19751

Females

7522

F55-59

7522

Half→25K

13.1 - 15.5 mi

Top 74%
×4stories
+66ft-88ft

Overall

19740

Females

7552

F55-59

7552

25K→30K

15.5 - 18.6 mi

Top 75%
×9stories
+181ft-148ft

Overall

20027

Females

7781

F55-59

7781

30K→20M

18.6 - 20.0 mi

Top 72%
×5stories
+64ft-50ft

Overall

19114

Females

7355

F55-59

7355

20M→21M

20.0 - 21.0 mi

Top 74%
×8stories
+106ft-24ft

Overall

19805

Females

7819

F55-59

7819

21M→35K

21.0 - 21.8 mi

Top 68%
×7stories
+17ft-86ft

Overall

18030

Females

6861

F55-59

6861

35K→23M

21.8 - 23.0 mi

Top 70%
×5stories
+23ft-63ft

Overall

18628

Females

7205

F55-59

7205

23M→24M

23.0 - 24.0 mi

Top 66%
×6stories
+12ft-82ft

Overall

17557

Females

6658

F55-59

6658

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

16961

Females

6385

F55-59

6385

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

16887

Females

6378

F55-59

6378

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2stories
+22ft-21ft

Overall

15500

Females

5547

F55-59

5547

Passing Analysis

Category:
Athletes Passed
1355
Passed By
2014
Net Change
-659
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18439
5K → 10K280391-111#18439#18550
10K → 15K82400-318#18550#18868
15K → 20K62474-412#18868#19280
20K → Half2423+1#19280#19279
Half → 25K94187-93#19279#19372
25K → 30K107276-169#19372#19541
30K → 20M10553+52#19541#19489
20M → 21M6993-24#19489#19513
21M → 35K7418+56#19513#19457
35K → 23M9254+38#19457#19419
23M → 24M10616+90#19419#19329
24M → 40K958+87#19329#19242
40K → 25.2M456+39#19242#19203
25.2M → Finish12015+105#19203#19098
TOTALS13552014-659
📊

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