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BOSTON MARATHON 2023

Chang-Hong Yu

Bib: 24305•F

TN

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
31:06
Rank: #23477
Start → 5K
10:01/mi
31:06 split
10K· 6.21 mi
1:03:03
Rank: #23957 (-480)
5K → 10K
10:17/mi
31:57 split
15K· 9.32 mi
1:35:45
Rank: #24160 (-203)
10K → 15K
10:32/mi
32:42 split
20K· 12.43 mi
2:11:04
Rank: #24493 (-333)
15K → 20K
11:22/mi
35:19 split
Half· 13.11 mi
2:17:59
Rank: #24451 (+42)
20K → Half
10:08/mi
6:55 split
25K· 15.53 mi
2:45:31
Rank: #24461 (-10)
Half → 25K
11:21/mi
27:32 split
30K· 18.64 mi
3:19:24
Rank: #24158 (+303)
25K → 30K
10:54/mi
33:53 split
20M
3:34:41
Rank: #24089 (+69)
30K → 20M
11:15/mi
15:17 split
21M
3:45:43
Rank: #23947 (+142)
20M → 21M
11:02/mi
11:02 split
35K· 21.75 mi
3:53:23
Rank: #23884 (+63)
21M → 35K
10:15/mi
7:40 split
23M
4:07:06
Rank: #23811 (+73)
35K → 23M
10:57/mi
13:43 split
24M
4:17:18
Rank: #23722 (+89)
23M → 24M
10:12/mi
10:12 split
40K· 24.85 mi
4:26:57
Rank: #23694 (+28)
24M → 40K
11:17/mi
9:39 split
25.2M
4:31:08
Rank: #23681 (+13)
40K → 25.2M
12:08/mi
4:11 split
Finish· 26.22 mi
4:42:07
Rank: #23679 (+2)
25.2M → Finish
10:47/mi
10:59 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:17:59
Pace10:32 /mi
2nd Half
Distance13.11 mi
Time2:24:08
Pace11:00 /mi
📊Positive Split: 4.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:4731:0610:0131:06
10:01
-
10K
6.21 mi12:19:441:03:0310:0931:57
10:17
+0:16
15K
9.32 mi12:52:261:35:4510:1632:42
10:32
+0:15
20K
12.43 mi13:27:452:11:0410:3335:19
11:22
+0:50
Half
13.11 mi13:34:402:17:5910:326:55
10:08
-1:14
25K
15.53 mi14:02:122:45:3110:3927:32
11:21
+1:13
30K
18.64 mi14:36:053:19:2410:4233:53
10:54
-0:27
20M
20.00 mi14:51:223:34:4110:4415:17
11:15
+0:21
21M
21.00 mi15:02:243:45:4310:4511:02
11:02
-0:13
35K
21.75 mi15:10:043:53:2310:447:40
10:15
-0:47
23M
23.00 mi15:23:474:07:0610:4513:43
10:57
+0:42
24M
24.00 mi15:33:594:17:1810:4310:12
10:12
-0:45
40K
24.85 mi15:43:384:26:5710:449:39
11:17
+1:05
25.2M
25.20 mi15:47:494:31:0810:464:11
12:08
+0:51
Finish
26.22 mi15:58:484:42:0710:4610:59
10:47
-1:21

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

10:01 /mi

Average Pace

10:46 /mi

Slowest Pace

12:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:00:32

43% of race

Time at Steady Pace

1:09:37

25% of race

Time at Slower Pace

1:31:58

33% of race

Average Pace: 10:46 /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 mi11:47:4731:0610:0131:06
10:01
#23477
10K
6.21 mi12:19:441:03:0310:0931:57
10:17
#23957
15K
9.32 mi12:52:261:35:4510:1632:42
10:32
#24160
20K
12.43 mi13:27:452:11:0410:3335:19
11:22
#24493
Half
13.11 mi13:34:402:17:5910:326:55
10:08
#24451
25K
15.53 mi14:02:122:45:3110:3927:32
11:21
#24461
30K
18.64 mi14:36:053:19:2410:4233:53
10:54
#24158
20M
20.00 mi14:51:223:34:4110:4415:17
11:15
#24089
21M
21.00 mi15:02:243:45:4310:4511:02
11:02
#23947
35K
21.75 mi15:10:043:53:2310:447:40
10:15
#23884
23M
23.00 mi15:23:474:07:0610:4513:43
10:57
#23811
24M
24.00 mi15:33:594:17:1810:4310:12
10:12
#23722
40K
24.85 mi15:43:384:26:5710:449:39
11:17
#23694
25.2M
25.20 mi15:47:494:31:0810:464:11
12:08
#23681
Finish
26.22 mi15:58:484:42:0710:4610:59
10:47
#23679
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi234779638963824504(Top 92%)10183(Top 89%)10183(Top 1932%)
10K6.21 mi3.10 mi23957-4809869-2319869-23124276(Top 91%)10044(Top 88%)10044(Top 1906%)
15K9.32 mi3.11 mi24160-2039978-1099978-10924504(Top 92%)10183(Top 89%)10183(Top 1932%)
20K12.43 mi3.11 mi24493-33310169-19110169-19125084(Top 94%)10530(Top 92%)10530(Top 1998%)
Half13.11 mi0.68 mi24451+4210149+2010149+2023570(Top 89%)9666(Top 85%)9666(Top 1834%)
25K15.53 mi2.42 mi24461-1010162-1310162-1324484(Top 92%)10220(Top 89%)10220(Top 1939%)
30K18.64 mi3.11 mi24158+30310011+15110011+15122955(Top 86%)9442(Top 83%)9442(Top 1792%)
20M20.00 mi1.36 mi24089+699988+239988+2323101(Top 87%)9568(Top 84%)9568(Top 1816%)
21M21.00 mi1.00 mi23947+1429906+829906+8220913(Top 79%)8412(Top 74%)8412(Top 1596%)
35K21.75 mi0.75 mi23884+639882+249882+2421904(Top 82%)9003(Top 79%)9003(Top 1708%)
23M23.00 mi1.25 mi23811+739847+359847+3522267(Top 84%)9199(Top 81%)9199(Top 1746%)
24M24.00 mi1.00 mi23722+899811+369811+3621353(Top 80%)8761(Top 77%)8761(Top 1662%)
40K24.85 mi0.85 mi23694+289801+109801+1022889(Top 86%)9605(Top 84%)9605(Top 1823%)
25.2M25.20 mi0.35 mi23681+139798+39798+322754(Top 85%)9531(Top 83%)9531(Top 1809%)
Finish26.22 mi1.02 mi23679+29801-39801-323581(Top 89%)9947(Top 87%)9947(Top 1887%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 92%
×21stories
+97ft-345ft

Overall

24504

Females

10183

F60-64

10183

5K→10K

3.1 - 6.2 mi

Top 91%
×5stories
+79ft-138ft

Overall

24276

Females

10044

F60-64

10044

10K→15K

6.2 - 9.3 mi

Top 92%
×3stories
+67ft-78ft

Overall

24504

Females

10183

F60-64

10183

15K→20K

9.3 - 12.4 mi

Top 94%
×5stories
+106ft-86ft

Overall

25084

Females

10530

F60-64

10530

20K→Half

12.4 - 13.1 mi

Top 89%
×2stories
+19ft-37ft

Overall

23570

Females

9666

F60-64

9666

Half→25K

13.1 - 15.5 mi

Top 92%
×4stories
+66ft-88ft

Overall

24484

Females

10220

F60-64

10220

25K→30K

15.5 - 18.6 mi

Top 86%
×9stories
+181ft-148ft

Overall

22955

Females

9442

F60-64

9442

30K→20M

18.6 - 20.0 mi

Top 87%
×5stories
+64ft-50ft

Overall

23101

Females

9568

F60-64

9568

20M→21M

20.0 - 21.0 mi

Top 79%
×8stories
+106ft-24ft

Overall

20913

Females

8412

F60-64

8412

21M→35K

21.0 - 21.8 mi

Top 82%
×7stories
+17ft-86ft

Overall

21904

Females

9003

F60-64

9003

35K→23M

21.8 - 23.0 mi

Top 84%
×5stories
+23ft-63ft

Overall

22267

Females

9199

F60-64

9199

23M→24M

23.0 - 24.0 mi

Top 80%
×6stories
+12ft-82ft

Overall

21353

Females

8761

F60-64

8761

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

22889

Females

9605

F60-64

9605

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

22754

Females

9531

F60-64

9531

25.2M→Finish

25.2 - 26.2 mi

Top 89%
×2stories
+22ft-21ft

Overall

23581

Females

9947

F60-64

9947

Passing Analysis

Category:
Athletes Passed
1148
Passed By
1350
Net Change
-202
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23477
5K → 10K50530-480#23477#23957
10K → 15K53256-203#23957#24160
15K → 20K29362-333#24160#24493
20K → Half5210+42#24493#24451
Half → 25K7686-10#24451#24461
25K → 30K32421+303#24461#24158
30K → 20M9122+69#24158#24089
20M → 21M1420+142#24089#23947
21M → 35K685+63#23947#23884
35K → 23M8512+73#23884#23811
23M → 24M901+89#23811#23722
24M → 40K4416+28#23722#23694
40K → 25.2M185+13#23694#23681
25.2M → Finish2624+2#23681#23679
TOTALS11481350-202
📊

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