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BOSTON MARATHON 2023

April Bai

Bib: 21276•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 46%
Division (F60-64)
#0 / 527
Top 15%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:03
Rank: #16777
Start → 5K
26:03 | 8:23/mi
10K· 6.21 mi
51:53
Rank: #16864 (-87)
5K → 10K
25:50 | 8:19/mi
15K· 9.32 mi
1:17:59
Rank: #16970 (-106)
10K → 15K
26:06 | 8:24/mi
20K· 12.43 mi
1:44:35
Rank: #17048 (-78)
15K → 20K
26:36 | 8:34/mi
Half· 13.11 mi
1:50:16
Rank: #17028 (+20)
20K → Half
5:41 | 8:20/mi
25K· 15.53 mi
2:10:46
Rank: #16847 (+181)
Half → 25K
20:30 | 8:27/mi
30K· 18.64 mi
2:38:25
Rank: #16765 (+82)
25K → 30K
27:39 | 8:54/mi
20M
2:50:57
Rank: #16818 (-53)
30K → 20M
12:32 | 9:13/mi
21M
3:01:05
Rank: #16939 (-121)
20M → 21M
10:08 | 10:08/mi
35K· 21.75 mi
3:07:29
Rank: #16886 (+53)
21M → 35K
6:24 | 8:33/mi
23M
3:19:10
Rank: #16935 (-49)
35K → 23M
11:41 | 9:20/mi
24M
3:28:13
Rank: #16956 (-21)
23M → 24M
9:03 | 9:03/mi
40K· 24.85 mi
3:36:45
Rank: #17117 (-161)
24M → 40K
8:32 | 9:59/mi
25.2M
3:40:20
Rank: #17166 (-49)
40K → 25.2M
3:35 | 10:23/mi
Finish· 26.22 mi
3:49:50
Rank: #17304 (-138)
25.2M → Finish
9:30 | 9:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:16
Pace8:25 /mi
2nd Half
Distance13.11 mi
Time1:59:34
Pace9:07 /mi
📊Positive Split: 8.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:5426:038:2326:03
8:23
-
10K
6.21 mi11:46:4451:538:2125:50
8:19
-0:04
15K
9.32 mi12:12:501:17:598:2226:06
8:24
+0:05
20K
12.43 mi12:39:261:44:358:2526:36
8:34
+0:10
Half
13.11 mi12:45:071:50:168:255:41
8:20
-0:14
25K
15.53 mi13:05:372:10:468:2520:30
8:27
+0:07
30K
18.64 mi13:33:162:38:258:3027:39
8:54
+0:27
20M
20.00 mi13:45:482:50:578:3312:32
9:13
+0:19
21M
21.00 mi13:55:563:01:058:3710:08
10:08
+0:55
35K
21.75 mi14:02:203:07:298:376:24
8:33
-1:35
23M
23.00 mi14:14:013:19:108:4011:41
9:20
+0:47
24M
24.00 mi14:23:043:28:138:419:03
9:03
-0:17
40K
24.85 mi14:31:363:36:458:438:32
9:59
+0:56
25.2M
25.20 mi14:35:113:40:208:453:35
10:23
+0:24
Finish
26.22 mi14:44:413:49:508:469:30
9:19
-1:04

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

8:19 /mi

Average Pace

8:46 /mi

Slowest Pace

10:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:34

48% of race

Time at Steady Pace

1:15:50

33% of race

Time at Slower Pace

43:26

19% of race

Average Pace: 8:46 /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 mi11:20:5426:038:2326:03
8:23
#16777
10K
6.21 mi11:46:4451:538:2125:50
8:19
#16864
15K
9.32 mi12:12:501:17:598:2226:06
8:24
#16970
20K
12.43 mi12:39:261:44:358:2526:36
8:34
#17048
Half
13.11 mi12:45:071:50:168:255:41
8:20
#17028
25K
15.53 mi13:05:372:10:468:2520:30
8:27
#16847
30K
18.64 mi13:33:162:38:258:3027:39
8:54
#16765
20M
20.00 mi13:45:482:50:578:3312:32
9:13
#16818
21M
21.00 mi13:55:563:01:058:3710:08
10:08
#16939
35K
21.75 mi14:02:203:07:298:376:24
8:33
#16886
23M
23.00 mi14:14:013:19:108:4011:41
9:20
#16935
24M
24.00 mi14:23:043:28:138:419:03
9:03
#16956
40K
24.85 mi14:31:363:36:458:438:32
9:59
#17117
25.2M
25.20 mi14:35:113:40:208:453:35
10:23
#17166
Finish
26.22 mi14:44:413:49:508:469:30
9:19
#17304
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi167775783578317163(Top 64%)6026(Top 53%)6026(Top 1143%)
10K6.21 mi3.10 mi16864-875821-385821-3817047(Top 64%)5902(Top 52%)5902(Top 1120%)
15K9.32 mi3.11 mi16970-1065889-685889-6817163(Top 64%)6026(Top 53%)6026(Top 1143%)
20K12.43 mi3.11 mi17048-785957-685957-6817252(Top 65%)6075(Top 53%)6075(Top 1153%)
Half13.11 mi0.68 mi17028+205946+115946+1116734(Top 63%)5745(Top 50%)5745(Top 1090%)
25K15.53 mi2.42 mi16847+1815862+845862+8415957(Top 60%)5422(Top 47%)5422(Top 1029%)
30K18.64 mi3.11 mi16765+825834+285834+2816657(Top 63%)5866(Top 51%)5866(Top 1113%)
20M20.00 mi1.36 mi16818-535873-395873-3917671(Top 66%)6560(Top 57%)6560(Top 1245%)
21M21.00 mi1.00 mi16939-1215952-795952-7918506(Top 70%)7057(Top 62%)7057(Top 1339%)
35K21.75 mi0.75 mi16886+535925+275925+2715644(Top 59%)5503(Top 48%)5503(Top 1044%)
23M23.00 mi1.25 mi16935-495983-585983-5817672(Top 66%)6670(Top 58%)6670(Top 1266%)
24M24.00 mi1.00 mi16956-216017-346017-3417467(Top 66%)6615(Top 58%)6615(Top 1255%)
40K24.85 mi0.85 mi17117-1616126-1096126-10919907(Top 75%)8008(Top 70%)8008(Top 1520%)
25.2M25.20 mi0.35 mi17166-496156-306156-3018763(Top 70%)7367(Top 64%)7367(Top 1398%)
Finish26.22 mi1.02 mi17304-1386245-896245-8919464(Top 73%)7707(Top 67%)7707(Top 1462%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21stories
+97ft-345ft

Overall

17163

Females

6026

F60-64

6026

5K→10K

3.1 - 6.2 mi

Top 64%
×5stories
+79ft-138ft

Overall

17047

Females

5902

F60-64

5902

10K→15K

6.2 - 9.3 mi

Top 64%
×3stories
+67ft-78ft

Overall

17163

Females

6026

F60-64

6026

15K→20K

9.3 - 12.4 mi

Top 65%
×5stories
+106ft-86ft

Overall

17252

Females

6075

F60-64

6075

20K→Half

12.4 - 13.1 mi

Top 63%
×2stories
+19ft-37ft

Overall

16734

Females

5745

F60-64

5745

Half→25K

13.1 - 15.5 mi

Top 60%
×4stories
+66ft-88ft

Overall

15957

Females

5422

F60-64

5422

25K→30K

15.5 - 18.6 mi

Top 63%
×9stories
+181ft-148ft

Overall

16657

Females

5866

F60-64

5866

30K→20M

18.6 - 20.0 mi

Top 66%
×5stories
+64ft-50ft

Overall

17671

Females

6560

F60-64

6560

20M→21M

20.0 - 21.0 mi

Top 70%
×8stories
+106ft-24ft

Overall

18506

Females

7057

F60-64

7057

21M→35K

21.0 - 21.8 mi

Top 59%
×7stories
+17ft-86ft

Overall

15644

Females

5503

F60-64

5503

35K→23M

21.8 - 23.0 mi

Top 66%
×5stories
+23ft-63ft

Overall

17672

Females

6670

F60-64

6670

23M→24M

23.0 - 24.0 mi

Top 66%
×6stories
+12ft-82ft

Overall

17467

Females

6615

F60-64

6615

24M→40K

24.0 - 24.9 mi

Top 75%
×1story
+6ft-20ft

Overall

19907

Females

8008

F60-64

8008

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

18763

Females

7367

F60-64

7367

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2stories
+22ft-21ft

Overall

19464

Females

7707

F60-64

7707

Passing Analysis

Category:
Athletes Passed
1390
Passed By
1917
Net Change
-527
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16777
5K → 10K268355-87#16777#16864
10K → 15K151257-106#16864#16970
15K → 20K157235-78#16970#17048
20K → Half3919+20#17048#17028
Half → 25K21635+181#17028#16847
25K → 30K203121+82#16847#16765
30K → 20M65118-53#16765#16818
20M → 21M41162-121#16818#16939
21M → 35K7118+53#16939#16886
35K → 23M69118-49#16886#16935
23M → 24M5172-21#16935#16956
24M → 40K21182-161#16956#17117
40K → 25.2M1261-49#17117#17166
25.2M → Finish26164-138#17166#17304
TOTALS13901917-527
📊

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