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BOSTON MARATHON 2023

Eun Sook Song

Bib: 23274•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
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
31:39
Rank: #23921
Start → 5K
31:39 | 10:11/mi
10K· 6.21 mi
1:00:49
Rank: #23137 (+784)
5K → 10K
29:10 | 9:23/mi
15K· 9.32 mi
1:29:40
Rank: #22647 (+490)
10K → 15K
28:51 | 9:17/mi
20K· 12.43 mi
1:59:30
Rank: #22450 (+197)
15K → 20K
29:50 | 9:36/mi
Half· 13.11 mi
2:05:30
Rank: #22315 (+135)
20K → Half
6:00 | 8:48/mi
25K· 15.53 mi
2:28:34
Rank: #22067 (+248)
Half → 25K
23:04 | 9:31/mi
30K· 18.64 mi
2:59:39
Rank: #21876 (+191)
25K → 30K
31:05 | 10:00/mi
20M
3:13:34
Rank: #21810 (+66)
30K → 20M
13:55 | 10:14/mi
21M
3:25:19
Rank: #21869 (-59)
20M → 21M
11:45 | 11:45/mi
35K· 21.75 mi
3:32:46
Rank: #21852 (+17)
21M → 35K
7:27 | 9:57/mi
23M
3:45:59
Rank: #21827 (+25)
35K → 23M
13:13 | 10:33/mi
24M
3:55:40
Rank: #21742 (+85)
23M → 24M
9:41 | 9:41/mi
40K· 24.85 mi
4:04:54
Rank: #21744 (-2)
24M → 40K
9:14 | 10:48/mi
25.2M
4:08:50
Rank: #21730 (+14)
40K → 25.2M
3:56 | 11:24/mi
Finish· 26.22 mi
4:19:11
Rank: #21756 (-26)
25.2M → Finish
10:21 | 10:09/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:05:30
Pace9:34 /mi
2nd Half
Distance13.11 mi
Time2:13:41
Pace10:12 /mi
📊Positive Split: 6.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:2031:3910:1131:39
10:11
-
10K
6.21 mi12:20:301:00:499:4729:10
9:23
-0:48
15K
9.32 mi12:49:211:29:409:3728:51
9:17
-0:06
20K
12.43 mi13:19:111:59:309:3729:50
9:36
+0:19
Half
13.11 mi13:25:112:05:309:346:00
8:48
-0:48
25K
15.53 mi13:48:152:28:349:3423:04
9:31
+0:43
30K
18.64 mi14:19:202:59:399:3831:05
10:00
+0:29
20M
20.00 mi14:33:153:13:349:4113:55
10:14
+0:14
21M
21.00 mi14:45:003:25:199:4711:45
11:45
+1:31
35K
21.75 mi14:52:273:32:469:477:27
9:57
-1:48
23M
23.00 mi15:05:403:45:599:5013:13
10:33
+0:36
24M
24.00 mi15:15:213:55:409:499:41
9:41
-0:52
40K
24.85 mi15:24:354:04:549:519:14
10:48
+1:07
25.2M
25.20 mi15:28:314:08:509:523:56
11:24
+0:36
Finish
26.22 mi15:38:524:19:119:5410:21
10:09
-1:15

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

8:48 /mi

Average Pace

9:54 /mi

Slowest Pace

11:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:56:55

45% of race

Time at Steady Pace

1:44:08

40% of race

Time at Slower Pace

38:08

15% of race

Average Pace: 9:53 /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 mi11:51:2031:3910:1131:39
10:11
#23921
10K
6.21 mi12:20:301:00:499:4729:10
9:23
#23137
15K
9.32 mi12:49:211:29:409:3728:51
9:17
#22647
20K
12.43 mi13:19:111:59:309:3729:50
9:36
#22450
Half
13.11 mi13:25:112:05:309:346:00
8:48
#22315
25K
15.53 mi13:48:152:28:349:3423:04
9:31
#22067
30K
18.64 mi14:19:202:59:399:3831:05
10:00
#21876
20M
20.00 mi14:33:153:13:349:4113:55
10:14
#21810
21M
21.00 mi14:45:003:25:199:4711:45
11:45
#21869
35K
21.75 mi14:52:273:32:469:477:27
9:57
#21852
23M
23.00 mi15:05:403:45:599:5013:13
10:33
#21827
24M
24.00 mi15:15:213:55:409:499:41
9:41
#21742
40K
24.85 mi15:24:354:04:549:519:14
10:48
#21744
25.2M
25.20 mi15:28:314:08:509:523:56
11:24
#21730
Finish
26.22 mi15:38:524:19:119:5410:21
10:09
#21756
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi239219848984821597(Top 81%)8555(Top 75%)8555(Top 1623%)
10K6.21 mi3.10 mi23137+7849439+4099439+40922194(Top 83%)8919(Top 78%)8919(Top 1692%)
15K9.32 mi3.11 mi22647+4909162+2779162+27721597(Top 81%)8555(Top 75%)8555(Top 1623%)
20K12.43 mi3.11 mi22450+1979058+1049058+10421873(Top 82%)8726(Top 76%)8726(Top 1656%)
Half13.11 mi0.68 mi22315+1358988+708988+7019533(Top 73%)7411(Top 65%)7411(Top 1406%)
25K15.53 mi2.42 mi22067+2488861+1278861+12720886(Top 78%)8210(Top 72%)8210(Top 1558%)
30K18.64 mi3.11 mi21876+1918760+1018760+10121049(Top 79%)8374(Top 73%)8374(Top 1589%)
20M20.00 mi1.36 mi21810+668738+228738+2221129(Top 79%)8487(Top 74%)8487(Top 1610%)
21M21.00 mi1.00 mi21869-598781-438781-4322329(Top 84%)9180(Top 80%)9180(Top 1742%)
35K21.75 mi0.75 mi21852+178781878121170(Top 80%)8584(Top 75%)8584(Top 1629%)
23M23.00 mi1.25 mi21827+258780+18780+121458(Top 81%)8767(Top 77%)8767(Top 1664%)
24M24.00 mi1.00 mi21742+858744+368744+3619858(Top 75%)7901(Top 69%)7901(Top 1499%)
40K24.85 mi0.85 mi21744-28761-178761-1721948(Top 82%)9125(Top 80%)9125(Top 1731%)
25.2M25.20 mi0.35 mi21730+148759+28759+221384(Top 80%)8803(Top 77%)8803(Top 1670%)
Finish26.22 mi1.02 mi21756-268771-128771-1222182(Top 83%)9216(Top 81%)9216(Top 1749%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 81%
×21stories
+97ft-345ft

Overall

21597

Females

8555

F60-64

8555

5K→10K

3.1 - 6.2 mi

Top 83%
×5stories
+79ft-138ft

Overall

22194

Females

8919

F60-64

8919

10K→15K

6.2 - 9.3 mi

Top 81%
×3stories
+67ft-78ft

Overall

21597

Females

8555

F60-64

8555

15K→20K

9.3 - 12.4 mi

Top 82%
×5stories
+106ft-86ft

Overall

21873

Females

8726

F60-64

8726

20K→Half

12.4 - 13.1 mi

Top 73%
×2stories
+19ft-37ft

Overall

19533

Females

7411

F60-64

7411

Half→25K

13.1 - 15.5 mi

Top 78%
×4stories
+66ft-88ft

Overall

20886

Females

8210

F60-64

8210

25K→30K

15.5 - 18.6 mi

Top 79%
×9stories
+181ft-148ft

Overall

21049

Females

8374

F60-64

8374

30K→20M

18.6 - 20.0 mi

Top 79%
×5stories
+64ft-50ft

Overall

21129

Females

8487

F60-64

8487

20M→21M

20.0 - 21.0 mi

Top 84%
×8stories
+106ft-24ft

Overall

22329

Females

9180

F60-64

9180

21M→35K

21.0 - 21.8 mi

Top 80%
×7stories
+17ft-86ft

Overall

21170

Females

8584

F60-64

8584

35K→23M

21.8 - 23.0 mi

Top 81%
×5stories
+23ft-63ft

Overall

21458

Females

8767

F60-64

8767

23M→24M

23.0 - 24.0 mi

Top 75%
×6stories
+12ft-82ft

Overall

19858

Females

7901

F60-64

7901

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

21948

Females

9125

F60-64

9125

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

21384

Females

8803

F60-64

8803

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2stories
+22ft-21ft

Overall

22182

Females

9216

F60-64

9216

Passing Analysis

Category:
Athletes Passed
2613
Passed By
448
Net Change
+2165
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23921
5K → 10K81026+784#23921#23137
10K → 15K50414+490#23137#22647
15K → 20K24447+197#22647#22450
20K → Half1383+135#22450#22315
Half → 25K2579+248#22315#22067
25K → 30K24251+191#22067#21876
30K → 20M9832+66#21876#21810
20M → 21M3998-59#21810#21869
21M → 35K3316+17#21869#21852
35K → 23M7550+25#21852#21827
23M → 24M949+85#21827#21742
24M → 40K3739-2#21742#21744
40K → 25.2M228+14#21744#21730
25.2M → Finish2046-26#21730#21756
TOTALS2613448+2165
📊

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