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BOSTON MARATHON 2023

Naoko Nakayama

Bib: 21002•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 34%
Masters (Masters Women)
#0 / 6539
Top 21%
Division (F60-64)
#0 / 527
Top 3%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:04
Rank: #16801
Start → 5K
26:04 | 8:23/mi
10K· 6.21 mi
50:56
Rank: #15804 (+997)
5K → 10K
24:52 | 8:00/mi
15K· 9.32 mi
1:15:41
Rank: #15253 (+551)
10K → 15K
24:45 | 7:58/mi
20K· 12.43 mi
1:40:21
Rank: #14692 (+561)
15K → 20K
24:40 | 7:56/mi
Half· 13.11 mi
1:45:31
Rank: #14498 (+194)
20K → Half
5:10 | 7:34/mi
25K· 15.53 mi
2:04:33
Rank: #14004 (+494)
Half → 25K
19:02 | 7:51/mi
30K· 18.64 mi
2:29:36
Rank: #13479 (+525)
25K → 30K
25:03 | 8:04/mi
20M
2:40:42
Rank: #13311 (+168)
30K → 20M
11:06 | 8:10/mi
21M
2:49:35
Rank: #13259 (+52)
20M → 21M
8:53 | 8:53/mi
35K· 21.75 mi
2:55:36
Rank: #13208 (+51)
21M → 35K
6:01 | 8:03/mi
23M
3:06:19
Rank: #13199 (+9)
35K → 23M
10:43 | 8:34/mi
24M
3:14:44
Rank: #13231 (-32)
23M → 24M
8:25 | 8:25/mi
40K· 24.85 mi
3:22:10
Rank: #13260 (-29)
24M → 40K
7:26 | 8:42/mi
25.2M
3:25:26
Rank: #13266 (-6)
40K → 25.2M
3:16 | 9:28/mi
Finish· 26.22 mi
3:34:09
Rank: #13385 (-119)
25.2M → Finish
8:43 | 8:33/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:31
Pace8:03 /mi
2nd Half
Distance13.11 mi
Time1:48:38
Pace8:17 /mi
📊Positive Split: 3.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:4626:048:2326:04
8:23
-
10K
6.21 mi11:43:3850:568:1224:52
8:00
-0:23
15K
9.32 mi12:08:231:15:418:0724:45
7:58
-0:02
20K
12.43 mi12:33:031:40:218:0424:40
7:56
-0:02
Half
13.11 mi12:38:131:45:318:035:10
7:34
-0:22
25K
15.53 mi12:57:152:04:338:0119:02
7:51
+0:17
30K
18.64 mi13:22:182:29:368:0225:03
8:04
+0:13
20M
20.00 mi13:33:242:40:428:0211:06
8:10
+0:06
21M
21.00 mi13:42:172:49:358:058:53
8:53
+0:43
35K
21.75 mi13:48:182:55:368:046:01
8:03
-0:50
23M
23.00 mi13:59:013:06:198:0610:43
8:34
+0:31
24M
24.00 mi14:07:263:14:448:078:25
8:25
-0:09
40K
24.85 mi14:14:523:22:108:087:26
8:42
+0:17
25.2M
25.20 mi14:18:083:25:268:093:16
9:28
+0:46
Finish
26.22 mi14:26:513:34:098:108:43
8:33
-0:55

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

7:34 /mi

Average Pace

8:10 /mi

Slowest Pace

9:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

48:52

23% of race

Time at Steady Pace

1:57:51

55% of race

Time at Slower Pace

47:26

22% 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 mi11:18:4626:048:2326:04
8:23
#16801
10K
6.21 mi11:43:3850:568:1224:52
8:00
#15804
15K
9.32 mi12:08:231:15:418:0724:45
7:58
#15253
20K
12.43 mi12:33:031:40:218:0424:40
7:56
#14692
Half
13.11 mi12:38:131:45:318:035:10
7:34
#14498
25K
15.53 mi12:57:152:04:338:0119:02
7:51
#14004
30K
18.64 mi13:22:182:29:368:0225:03
8:04
#13479
20M
20.00 mi13:33:242:40:428:0211:06
8:10
#13311
21M
21.00 mi13:42:172:49:358:058:53
8:53
#13259
35K
21.75 mi13:48:182:55:368:046:01
8:03
#13208
23M
23.00 mi13:59:013:06:198:0610:43
8:34
#13199
24M
24.00 mi14:07:263:14:448:078:25
8:25
#13231
40K
24.85 mi14:14:523:22:108:087:26
8:42
#13260
25.2M
25.20 mi14:18:083:25:268:093:16
9:28
#13266
Finish
26.22 mi14:26:513:34:098:108:43
8:33
#13385
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi168015791579114118(Top 53%)4154(Top 36%)4154(Top 788%)
10K6.21 mi3.10 mi15804+9975158+6335158+63314840(Top 56%)4573(Top 40%)4573(Top 868%)
15K9.32 mi3.11 mi15253+5514821+3374821+33714118(Top 53%)4154(Top 36%)4154(Top 788%)
20K12.43 mi3.11 mi14692+5614487+3344487+33412957(Top 49%)3526(Top 31%)3526(Top 669%)
Half13.11 mi0.68 mi14498+1944367+1204367+12010906(Top 41%)2335(Top 20%)2335(Top 443%)
25K15.53 mi2.42 mi14004+4944111+2564111+25611550(Top 43%)2805(Top 25%)2805(Top 532%)
30K18.64 mi3.11 mi13479+5253829+2823829+28211404(Top 43%)2855(Top 25%)2855(Top 542%)
20M20.00 mi1.36 mi13311+1683740+893740+8911510(Top 43%)3016(Top 26%)3016(Top 572%)
21M21.00 mi1.00 mi13259+523727+133727+1312781(Top 48%)3832(Top 34%)3832(Top 727%)
35K21.75 mi0.75 mi13208+513718+93718+912469(Top 47%)3688(Top 32%)3688(Top 700%)
23M23.00 mi1.25 mi13199+93733-153733-1513592(Top 51%)4387(Top 38%)4387(Top 832%)
24M24.00 mi1.00 mi13231-323783-503783-5013986(Top 53%)4660(Top 41%)4660(Top 884%)
40K24.85 mi0.85 mi13260-293814-313814-3114479(Top 54%)5009(Top 44%)5009(Top 950%)
25.2M25.20 mi0.35 mi13266-63833-193833-1915075(Top 57%)5329(Top 47%)5329(Top 1011%)
Finish26.22 mi1.02 mi13385-1193924-913924-9115739(Top 59%)5659(Top 50%)5659(Top 1074%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21stories
+97ft-345ft

Overall

14118

Females

4154

F60-64

4154

5K→10K

3.1 - 6.2 mi

Top 56%
×5stories
+79ft-138ft

Overall

14840

Females

4573

F60-64

4573

10K→15K

6.2 - 9.3 mi

Top 53%
×3stories
+67ft-78ft

Overall

14118

Females

4154

F60-64

4154

15K→20K

9.3 - 12.4 mi

Top 49%
×5stories
+106ft-86ft

Overall

12957

Females

3526

F60-64

3526

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

10906

Females

2335

F60-64

2335

Half→25K

13.1 - 15.5 mi

Top 43%
×4stories
+66ft-88ft

Overall

11550

Females

2805

F60-64

2805

25K→30K

15.5 - 18.6 mi

Top 43%
×9stories
+181ft-148ft

Overall

11404

Females

2855

F60-64

2855

30K→20M

18.6 - 20.0 mi

Top 43%
×5stories
+64ft-50ft

Overall

11510

Females

3016

F60-64

3016

20M→21M

20.0 - 21.0 mi

Top 48%
×8stories
+106ft-24ft

Overall

12781

Females

3832

F60-64

3832

21M→35K

21.0 - 21.8 mi

Top 47%
×7stories
+17ft-86ft

Overall

12469

Females

3688

F60-64

3688

35K→23M

21.8 - 23.0 mi

Top 51%
×5stories
+23ft-63ft

Overall

13592

Females

4387

F60-64

4387

23M→24M

23.0 - 24.0 mi

Top 53%
×6stories
+12ft-82ft

Overall

13986

Females

4660

F60-64

4660

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

14479

Females

5009

F60-64

5009

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

15075

Females

5329

F60-64

5329

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2stories
+22ft-21ft

Overall

15739

Females

5659

F60-64

5659

Passing Analysis

Category:
Athletes Passed
4082
Passed By
666
Net Change
+3416
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16801
5K → 10K106366+997#16801#15804
10K → 15K57423+551#15804#15253
15K → 20K57514+561#15253#14692
20K → Half1951+194#14692#14498
Half → 25K5006+494#14498#14004
25K → 30K5349+525#14004#13479
30K → 20M18315+168#13479#13311
20M → 21M11260+52#13311#13259
21M → 35K8231+51#13259#13208
35K → 23M9485+9#13208#13199
23M → 24M5991-32#13199#13231
24M → 40K5382-29#13231#13260
40K → 25.2M3238-6#13260#13266
25.2M → Finish26145-119#13266#13385
TOTALS4082666+3416
📊

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