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BOSTON MARATHON 2023

Qingmei Bu

Bib: 22351•F

NJ

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F50-54)
#0 / 1207
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
8:59/mi
27:55
↑ 97↓ 3451.5%
10K· 6.21 mi
9:26/mi
57:12
↑ 79↓ 1380.4%
15K· 9.32 mi
9:51/mi
1:27:49
↑ 67↓ 78
20K· 12.43 mi
10:50/mi
2:01:28
↑ 106↓ 860.1%
Half· 13.11 mi
10:29/mi
2:08:37
↑ 19↓ 370.5%
25K· 15.53 mi
10:38/mi
2:34:24
↑ 66↓ 880.2%
30K· 18.64 mi
11:32/mi
3:10:14
↑ 181↓ 1480.2%
20M
11:21/mi
3:25:39
↑ 64↓ 500.2%
21M
13:47/mi
3:39:26
↑ 106↓ 241.6%
35K· 21.75 mi
11:50/mi
3:48:17
↑ 17↓ 861.7%
23M
11:41/mi
4:02:55
↑ 23↓ 630.6%
24M
11:09/mi
4:14:04
↓ 821.3%
40K· 24.85 mi
11:48/mi
4:24:09
↓ 200.3%
25.2M
12:46/mi
4:28:33
↑ 13↓ 160.2%
Finish· 26.22 mi
11:15/mi
4:40:01
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:08:37
Pace9:49 /mi
2nd Half
Distance13.11 mi
Time2:31:24
Pace11:33 /mi
📊Positive Split: 17.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:3427:558:5927:55
8:59
-
10K
6.21 mi11:50:5157:129:1229:17
9:26
+0:27
15K
9.32 mi12:21:281:27:499:2530:37
9:51
+0:25
20K
12.43 mi12:55:072:01:289:4633:39
10:50
+0:59
Half
13.11 mi13:02:162:08:379:497:09
10:29
-0:21
25K
15.53 mi13:28:032:34:249:5625:47
10:38
+0:09
30K
18.64 mi14:03:533:10:1410:1235:50
11:32
+0:54
20M
20.00 mi14:19:183:25:3910:1715:25
11:21
-0:11
21M
21.00 mi14:33:053:39:2610:2713:47
13:47
+2:26
35K
21.75 mi14:41:563:48:1710:308:51
11:50
-1:57
23M
23.00 mi14:56:344:02:5510:3414:38
11:41
-0:09
24M
24.00 mi15:07:434:14:0410:3511:09
11:09
-0:32
40K
24.85 mi15:17:484:24:0910:3810:05
11:48
+0:39
25.2M
25.20 mi15:22:124:28:3310:394:24
12:46
+0:58
Finish
26.22 mi15:33:404:40:0110:4111:28
11:15
-1:31

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

8:59 /mi

Average Pace

10:41 /mi

Slowest Pace

13:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:00:45

43% of race

Time at Steady Pace

2:21:05

50% of race

Time at Slower Pace

18:11

6% of race

Average Pace: 10:41 /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 mi11:21:3427:558:5927:55
8:59
#20391
10K
6.21 mi11:50:5157:129:1229:17
9:26
#21418
15K
9.32 mi12:21:281:27:499:2530:37
9:51
#22053
20K
12.43 mi12:55:072:01:289:4633:39
10:50
#22865
Half
13.11 mi13:02:162:08:379:497:09
10:29
#22968
25K
15.53 mi13:28:032:34:249:5625:47
10:38
#23047
30K
18.64 mi14:03:533:10:1410:1235:50
11:32
#23254
20M
20.00 mi14:19:183:25:3910:1715:25
11:21
#23252
21M
21.00 mi14:33:053:39:2610:2713:47
13:47
#23394
35K
21.75 mi14:41:563:48:1710:308:51
11:50
#23447
23M
23.00 mi14:56:344:02:5510:3414:38
11:41
#23466
24M
24.00 mi15:07:434:14:0410:3511:09
11:09
#23470
40K
24.85 mi15:17:484:24:0910:3810:05
11:48
#23484
25.2M
25.20 mi15:22:124:28:3310:394:24
12:46
#23478
Finish
26.22 mi15:33:404:40:0110:4111:28
11:15
#23536
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi203918052805223198(Top 87%)9448(Top 83%)9448(Top 783%)
10K6.21 mi3.10 mi21418-10278543-4918543-49122295(Top 84%)8979(Top 79%)8979(Top 744%)
15K9.32 mi3.11 mi22053-6358866-3238866-32323198(Top 87%)9448(Top 83%)9448(Top 783%)
20K12.43 mi3.11 mi22865-8129281-4159281-41524371(Top 92%)10133(Top 89%)10133(Top 840%)
Half13.11 mi0.68 mi22968-1039329-489329-4824180(Top 91%)10017(Top 88%)10017(Top 830%)
25K15.53 mi2.42 mi23047-799381-529381-5223417(Top 88%)9622(Top 84%)9622(Top 797%)
30K18.64 mi3.11 mi23254-2079510-1299510-12923909(Top 90%)9965(Top 87%)9965(Top 826%)
20M20.00 mi1.36 mi23252+29527-179527-1723262(Top 87%)9660(Top 85%)9660(Top 800%)
21M21.00 mi1.00 mi23394-1429606-799606-7924854(Top 93%)10531(Top 92%)10531(Top 872%)
35K21.75 mi0.75 mi23447-539640-349640-3424509(Top 92%)10401(Top 91%)10401(Top 862%)
23M23.00 mi1.25 mi23466-199664-249664-2423561(Top 89%)9881(Top 87%)9881(Top 819%)
24M24.00 mi1.00 mi23470-49672-89672-823323(Top 88%)9809(Top 86%)9809(Top 813%)
40K24.85 mi0.85 mi23484-149688-169688-1623634(Top 89%)10012(Top 88%)10012(Top 829%)
25.2M25.20 mi0.35 mi23478+69692-49692-423678(Top 89%)10024(Top 88%)10024(Top 830%)
Finish26.22 mi1.02 mi23536-589728-369728-3624368(Top 92%)10340(Top 91%)10340(Top 857%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21story building
+97ft-345ft

Overall

23198

Females

9448

F50-54

9448

5K→10K

3.1 - 6.2 mi

Top 84%
×5story building
+79ft-138ft

Overall

22295

Females

8979

F50-54

8979

10K→15K

6.2 - 9.3 mi

Top 87%
×3story building
+67ft-78ft

Overall

23198

Females

9448

F50-54

9448

15K→20K

9.3 - 12.4 mi

Top 92%
×5story building
+106ft-86ft

Overall

24371

Females

10133

F50-54

10133

20K→Half

12.4 - 13.1 mi

Top 91%
×2story building
+19ft-37ft

Overall

24180

Females

10017

F50-54

10017

Half→25K

13.1 - 15.5 mi

Top 88%
×4story building
+66ft-88ft

Overall

23417

Females

9622

F50-54

9622

25K→30K

15.5 - 18.6 mi

Top 90%
×9story building
+181ft-148ft

Overall

23909

Females

9965

F50-54

9965

30K→20M

18.6 - 20.0 mi

Top 87%
×5story building
+64ft-50ft

Overall

23262

Females

9660

F50-54

9660

20M→21M

20.0 - 21.0 mi

Top 93%
×8story building
+106ft-24ft

Overall

24854

Females

10531

F50-54

10531

21M→35K

21.0 - 21.8 mi

Top 92%
×7story building
+17ft-86ft

Overall

24509

Females

10401

F50-54

10401

35K→23M

21.8 - 23.0 mi

Top 89%
×5story building
+23ft-63ft

Overall

23561

Females

9881

F50-54

9881

23M→24M

23.0 - 24.0 mi

Top 88%
×6story building
+12ft-82ft

Overall

23323

Females

9809

F50-54

9809

24M→40K

24.0 - 24.9 mi

Top 89%
×1story
+6ft-20ft

Overall

23634

Females

10012

F50-54

10012

40K→25.2M

24.9 - 25.2 mi

Top 89%
×1story
+13ft-16ft

Overall

23678

Females

10024

F50-54

10024

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2story building
+22ft-21ft

Overall

24368

Females

10340

F50-54

10340

Passing Analysis

Category:
Athletes Passed
433
Passed By
3578
Net Change
-3145
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20391
5K → 10K411068-1027#20391#21418
10K → 15K28663-635#21418#22053
15K → 20K15827-812#22053#22865
20K → Half9112-103#22865#22968
Half → 25K68147-79#22968#23047
25K → 30K61268-207#23047#23254
30K → 20M6159+2#23254#23252
20M → 21M8150-142#23252#23394
21M → 35K1265-53#23394#23447
35K → 23M4362-19#23447#23466
23M → 24M2630-4#23466#23470
24M → 40K2842-14#23470#23484
40K → 25.2M2014+6#23484#23478
25.2M → Finish1371-58#23478#23536
TOTALS4333578-3145
📊

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