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BOSTON MARATHON 2023

Bi-Ju Hu

Bib: 15458•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 38%
Masters (Masters Women)
#0 / 6539
Top 25%
Division (F40-44)
#0 / 1878
Top 45%
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
7:44/mi
24:03
↑ 97↓ 3451.5%
10K· 6.21 mi
7:41/mi
47:55
↑ 79↓ 1380.4%
15K· 9.32 mi
7:41/mi
1:11:47
↑ 67↓ 78
20K· 12.43 mi
7:46/mi
1:35:56
↑ 106↓ 860.1%
Half· 13.11 mi
7:36/mi
1:41:07
↑ 19↓ 370.5%
25K· 15.53 mi
8:06/mi
2:00:46
↑ 66↓ 880.2%
30K· 18.64 mi
8:23/mi
2:26:49
↑ 181↓ 1480.2%
20M
9:06/mi
2:39:12
↑ 64↓ 500.2%
21M
9:06/mi
2:48:18
↑ 106↓ 241.6%
35K· 21.75 mi
9:01/mi
2:55:03
↑ 17↓ 861.7%
23M
9:36/mi
3:07:04
↑ 23↓ 630.6%
24M
9:27/mi
3:16:31
↓ 821.3%
40K· 24.85 mi
9:10/mi
3:24:21
↓ 200.3%
25.2M
9:40/mi
3:27:41
↑ 13↓ 160.2%
Finish· 26.22 mi
8:47/mi
3:36:38
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:07
Pace7:43 /mi
2nd Half
Distance13.11 mi
Time1:55:31
Pace8:49 /mi
📊Positive Split: 14.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:3824:037:4424:03
7:44
-
10K
6.21 mi11:17:3047:557:4323:52
7:41
-0:03
15K
9.32 mi11:41:221:11:477:4223:52
7:41
0:00
20K
12.43 mi12:05:311:35:567:4324:09
7:46
+0:05
Half
13.11 mi12:10:421:41:077:435:11
7:36
-0:10
25K
15.53 mi12:30:212:00:467:4619:39
8:06
+0:30
30K
18.64 mi12:56:242:26:497:5326:03
8:23
+0:17
20M
20.00 mi13:08:472:39:127:5812:23
9:06
+0:43
21M
21.00 mi13:17:532:48:188:019:06
9:06
0:00
35K
21.75 mi13:24:382:55:038:036:45
9:01
-0:05
23M
23.00 mi13:36:393:07:048:0812:01
9:36
+0:35
24M
24.00 mi13:46:063:16:318:119:27
9:27
-0:09
40K
24.85 mi13:53:563:24:218:137:50
9:10
-0:17
25.2M
25.20 mi13:57:163:27:418:143:20
9:40
+0:30
Finish
26.22 mi14:06:133:36:388:168:57
8:47
-0:53

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

7:36 /mi

Average Pace

8:16 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:26:49

68% of race

Time at Steady Pace

37:11

17% of race

Time at Slower Pace

32:38

15% of race

Average Pace: 8:16 /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 mi10:53:3824:037:4424:03
7:44
#11864
10K
6.21 mi11:17:3047:557:4323:52
7:41
#11933
15K
9.32 mi11:41:221:11:477:4223:52
7:41
#11801
20K
12.43 mi12:05:311:35:567:4324:09
7:46
#11693
Half
13.11 mi12:10:421:41:077:435:11
7:36
#11648
25K
15.53 mi12:30:212:00:467:4619:39
8:06
#11959
30K
18.64 mi12:56:242:26:497:5326:03
8:23
#12270
20M
20.00 mi13:08:472:39:127:5812:23
9:06
#12702
21M
21.00 mi13:17:532:48:188:019:06
9:06
#12764
35K
21.75 mi13:24:382:55:038:036:45
9:01
#13006
23M
23.00 mi13:36:393:07:048:0812:01
9:36
#13471
24M
24.00 mi13:46:063:16:318:119:27
9:27
#13789
40K
24.85 mi13:53:563:24:218:137:50
9:10
#13905
25.2M
25.20 mi13:57:163:27:418:143:20
9:40
#13957
Finish
26.22 mi14:06:133:36:388:168:57
8:47
#14092
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi118642788278811729(Top 44%)2754(Top 24%)2754(Top 147%)
10K6.21 mi3.10 mi11933-692839-512839-5112094(Top 45%)2928(Top 26%)2928(Top 156%)
15K9.32 mi3.11 mi11801+1322788+512788+5111729(Top 44%)2754(Top 24%)2754(Top 147%)
20K12.43 mi3.11 mi11693+1082741+472741+4711528(Top 43%)2703(Top 24%)2703(Top 144%)
Half13.11 mi0.68 mi11648+452713+282713+2811103(Top 42%)2445(Top 21%)2445(Top 130%)
25K15.53 mi2.42 mi11959-3112916-2032916-20313556(Top 51%)3956(Top 35%)3956(Top 211%)
30K18.64 mi3.11 mi12270-3113140-2243140-22413603(Top 51%)4093(Top 36%)4093(Top 218%)
20M20.00 mi1.36 mi12702-4323401-2613401-26117108(Top 64%)6235(Top 55%)6235(Top 332%)
21M21.00 mi1.00 mi12764-623451-503451-5014025(Top 53%)4508(Top 39%)4508(Top 240%)
35K21.75 mi0.75 mi13006-2423608-1573608-15717997(Top 68%)6828(Top 60%)6828(Top 364%)
23M23.00 mi1.25 mi13471-4653901-2933901-29318724(Top 70%)7247(Top 63%)7247(Top 386%)
24M24.00 mi1.00 mi13789-3184128-2274128-22719041(Top 72%)7461(Top 65%)7461(Top 397%)
40K24.85 mi0.85 mi13905-1164214-864214-8616926(Top 64%)6350(Top 56%)6350(Top 338%)
25.2M25.20 mi0.35 mi13957-524249-354249-3515973(Top 60%)5837(Top 51%)5837(Top 311%)
Finish26.22 mi1.02 mi14092-1354356-1074356-10716949(Top 64%)6336(Top 55%)6336(Top 337%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21story building
+97ft-345ft

Overall

11729

Females

2754

F40-44

2754

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

12094

Females

2928

F40-44

2928

10K→15K

6.2 - 9.3 mi

Top 44%
×3story building
+67ft-78ft

Overall

11729

Females

2754

F40-44

2754

15K→20K

9.3 - 12.4 mi

Top 43%
×5story building
+106ft-86ft

Overall

11528

Females

2703

F40-44

2703

20K→Half

12.4 - 13.1 mi

Top 42%
×2story building
+19ft-37ft

Overall

11103

Females

2445

F40-44

2445

Half→25K

13.1 - 15.5 mi

Top 51%
×4story building
+66ft-88ft

Overall

13556

Females

3956

F40-44

3956

25K→30K

15.5 - 18.6 mi

Top 51%
×9story building
+181ft-148ft

Overall

13603

Females

4093

F40-44

4093

30K→20M

18.6 - 20.0 mi

Top 64%
×5story building
+64ft-50ft

Overall

17108

Females

6235

F40-44

6235

20M→21M

20.0 - 21.0 mi

Top 53%
×8story building
+106ft-24ft

Overall

14025

Females

4508

F40-44

4508

21M→35K

21.0 - 21.8 mi

Top 68%
×7story building
+17ft-86ft

Overall

17997

Females

6828

F40-44

6828

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

18724

Females

7247

F40-44

7247

23M→24M

23.0 - 24.0 mi

Top 72%
×6story building
+12ft-82ft

Overall

19041

Females

7461

F40-44

7461

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

16926

Females

6350

F40-44

6350

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

15973

Females

5837

F40-44

5837

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2story building
+22ft-21ft

Overall

16949

Females

6336

F40-44

6336

Passing Analysis

Category:
Athletes Passed
1200
Passed By
3428
Net Change
-2228
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11864
5K → 10K265334-69#11864#11933
10K → 15K262130+132#11933#11801
15K → 20K218110+108#11801#11693
20K → Half5611+45#11693#11648
Half → 25K57368-311#11648#11959
25K → 30K116427-311#11959#12270
30K → 20M28460-432#12270#12702
20M → 21M72134-62#12702#12764
21M → 35K11253-242#12764#13006
35K → 23M16481-465#13006#13471
23M → 24M16334-318#13471#13789
24M → 40K35151-116#13789#13905
40K → 25.2M1567-52#13905#13957
25.2M → Finish33168-135#13957#14092
TOTALS12003428-2228
📊

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