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BOSTON MARATHON 2023

Naoko Ishii

Bib: 24046•F

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
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
9:33/mi
29:41
↑ 97↓ 3451.5%
10K· 6.21 mi
9:20/mi
58:41
↑ 79↓ 1380.4%
15K· 9.32 mi
9:26/mi
1:27:58
↑ 67↓ 78
20K· 12.43 mi
9:37/mi
1:57:52
↑ 106↓ 860.1%
Half· 13.11 mi
9:37/mi
2:04:26
↑ 19↓ 370.5%
25K· 15.53 mi
9:54/mi
2:28:26
↑ 66↓ 880.2%
30K· 18.64 mi
10:04/mi
2:59:44
↑ 181↓ 1480.2%
20M
10:14/mi
3:13:39
↑ 64↓ 500.2%
21M
10:45/mi
3:24:24
↑ 106↓ 241.6%
35K· 21.75 mi
11:42/mi
3:33:09
↑ 17↓ 861.7%
23M
11:44/mi
3:47:50
↑ 23↓ 630.6%
24M
11:20/mi
3:59:10
↓ 821.3%
40K· 24.85 mi
12:04/mi
4:09:29
↓ 200.3%
25.2M
12:31/mi
4:13:48
↑ 13↓ 160.2%
Finish· 26.22 mi
11:30/mi
4:25:31
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:04:26
Pace9:30 /mi
2nd Half
Distance13.11 mi
Time2:21:05
Pace10:46 /mi
📊Positive Split: 13.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:0729:419:3329:41
9:33
-
10K
6.21 mi12:14:0758:419:2729:00
9:20
-0:13
15K
9.32 mi12:43:241:27:589:2629:17
9:26
+0:06
20K
12.43 mi13:13:181:57:529:2929:54
9:37
+0:11
Half
13.11 mi13:19:522:04:269:306:34
9:37
0:00
25K
15.53 mi13:43:522:28:269:3324:00
9:54
+0:17
30K
18.64 mi14:15:102:59:449:3931:18
10:04
+0:10
20M
20.00 mi14:29:053:13:399:4113:55
10:14
+0:10
21M
21.00 mi14:39:503:24:249:4410:45
10:45
+0:31
35K
21.75 mi14:48:353:33:099:488:45
11:42
+0:57
23M
23.00 mi15:03:163:47:509:5414:41
11:44
+0:02
24M
24.00 mi15:14:363:59:109:5811:20
11:20
-0:24
40K
24.85 mi15:24:554:09:2910:0210:19
12:04
+0:44
25.2M
25.20 mi15:29:144:13:4810:044:19
12:31
+0:27
Finish
26.22 mi15:40:574:25:3110:0811:43
11:30
-1:01

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

9:20 /mi

Average Pace

10:08 /mi

Slowest Pace

12:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:04:26

47% of race

Time at Steady Pace

1:19:58

30% of race

Time at Slower Pace

1:01:07

23% of race

Average Pace: 10:08 /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 mi11:45:0729:419:3329:41
9:33
#22261
10K
6.21 mi12:14:0758:419:2729:00
9:20
#22190
15K
9.32 mi12:43:241:27:589:2629:17
9:26
#22110
20K
12.43 mi13:13:181:57:529:2929:54
9:37
#22059
Half
13.11 mi13:19:522:04:269:306:34
9:37
#22081
25K
15.53 mi13:43:522:28:269:3324:00
9:54
#22045
30K
18.64 mi14:15:102:59:449:3931:18
10:04
#21905
20M
20.00 mi14:29:053:13:399:4113:55
10:14
#21821
21M
21.00 mi14:39:503:24:249:4410:45
10:45
#21750
35K
21.75 mi14:48:353:33:099:488:45
11:42
#21901
23M
23.00 mi15:03:163:47:509:5414:41
11:44
#22024
24M
24.00 mi15:14:363:59:109:5811:20
11:20
#22099
40K
24.85 mi15:24:554:09:2910:0210:19
12:04
#22204
25.2M
25.20 mi15:29:144:13:4810:044:19
12:31
#22233
Finish
26.22 mi15:40:574:25:3110:0811:43
11:30
#22346
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi222619009900922036(Top 83%)8809(Top 77%)8809(Top 1672%)
10K6.21 mi3.10 mi22190+718947+628947+6222034(Top 83%)8834(Top 77%)8834(Top 1676%)
15K9.32 mi3.11 mi22110+808899+488899+4822036(Top 83%)8809(Top 77%)8809(Top 1672%)
20K12.43 mi3.11 mi22059+518867+328867+3221936(Top 82%)8763(Top 77%)8763(Top 1663%)
Half13.11 mi0.68 mi22081-228874-78874-722479(Top 84%)9064(Top 79%)9064(Top 1720%)
25K15.53 mi2.42 mi22045+368852+228852+2221993(Top 83%)8838(Top 77%)8838(Top 1677%)
30K18.64 mi3.11 mi21905+1408784+688784+6821232(Top 80%)8482(Top 74%)8482(Top 1609%)
20M20.00 mi1.36 mi21821+848743+418743+4121133(Top 79%)8491(Top 74%)8491(Top 1611%)
21M21.00 mi1.00 mi21750+718717+268717+2620276(Top 76%)8083(Top 71%)8083(Top 1534%)
35K21.75 mi0.75 mi21901-1518799-828799-8224354(Top 91%)10310(Top 90%)10310(Top 1956%)
23M23.00 mi1.25 mi22024-1238884-858884-8523617(Top 89%)9911(Top 87%)9911(Top 1881%)
24M24.00 mi1.00 mi22099-758935-518935-5123646(Top 89%)9972(Top 87%)9972(Top 1892%)
40K24.85 mi0.85 mi22204-1059001-669001-6623978(Top 90%)10167(Top 89%)10167(Top 1929%)
25.2M25.20 mi0.35 mi22233-299017-169017-1623320(Top 88%)9833(Top 86%)9833(Top 1866%)
Finish26.22 mi1.02 mi22346-1139094-779094-7724684(Top 93%)10497(Top 92%)10497(Top 1992%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21story building
+97ft-345ft

Overall

22036

Females

8809

F60-64

8809

5K→10K

3.1 - 6.2 mi

Top 83%
×5story building
+79ft-138ft

Overall

22034

Females

8834

F60-64

8834

10K→15K

6.2 - 9.3 mi

Top 83%
×3story building
+67ft-78ft

Overall

22036

Females

8809

F60-64

8809

15K→20K

9.3 - 12.4 mi

Top 82%
×5story building
+106ft-86ft

Overall

21936

Females

8763

F60-64

8763

20K→Half

12.4 - 13.1 mi

Top 84%
×2story building
+19ft-37ft

Overall

22479

Females

9064

F60-64

9064

Half→25K

13.1 - 15.5 mi

Top 83%
×4story building
+66ft-88ft

Overall

21993

Females

8838

F60-64

8838

25K→30K

15.5 - 18.6 mi

Top 80%
×9story building
+181ft-148ft

Overall

21232

Females

8482

F60-64

8482

30K→20M

18.6 - 20.0 mi

Top 79%
×5story building
+64ft-50ft

Overall

21133

Females

8491

F60-64

8491

20M→21M

20.0 - 21.0 mi

Top 76%
×8story building
+106ft-24ft

Overall

20276

Females

8083

F60-64

8083

21M→35K

21.0 - 21.8 mi

Top 91%
×7story building
+17ft-86ft

Overall

24354

Females

10310

F60-64

10310

35K→23M

21.8 - 23.0 mi

Top 89%
×5story building
+23ft-63ft

Overall

23617

Females

9911

F60-64

9911

23M→24M

23.0 - 24.0 mi

Top 89%
×6story building
+12ft-82ft

Overall

23646

Females

9972

F60-64

9972

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

23978

Females

10167

F60-64

10167

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

23320

Females

9833

F60-64

9833

25.2M→Finish

25.2 - 26.2 mi

Top 93%
×2story building
+22ft-21ft

Overall

24684

Females

10497

F60-64

10497

Passing Analysis

Category:
Athletes Passed
1295
Passed By
1380
Net Change
-85
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22261
5K → 10K288217+71#22261#22190
10K → 15K212132+80#22190#22110
15K → 20K161110+51#22110#22059
20K → Half1840-22#22059#22081
Half → 25K11579+36#22081#22045
25K → 30K21474+140#22045#21905
30K → 20M10723+84#21905#21821
20M → 21M9625+71#21821#21750
21M → 35K7158-151#21750#21901
35K → 23M26149-123#21901#22024
23M → 24M2398-75#22024#22099
24M → 40K14119-105#22099#22204
40K → 25.2M736-29#22204#22233
25.2M → Finish7120-113#22233#22346
TOTALS12951380-85
📊

Passing Visuals

Category:
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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