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BOSTON MARATHON 2023

Qing Zhou

Bib: 15514•F

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 41%
Masters (Masters Women)
#0 / 6539
Top 28%
Division (F40-44)
#0 / 1878
Top 49%
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
7:41/mi
23:52
↑ 97↓ 3451.5%
10K· 6.21 mi
7:42/mi
47:48
↑ 79↓ 1380.4%
15K· 9.32 mi
7:55/mi
1:12:25
↑ 67↓ 78
20K· 12.43 mi
8:31/mi
1:38:52
↑ 106↓ 860.1%
Half· 13.11 mi
8:20/mi
1:44:33
↑ 19↓ 370.5%
25K· 15.53 mi
8:47/mi
2:05:51
↑ 66↓ 880.2%
30K· 18.64 mi
8:53/mi
2:33:28
↑ 181↓ 1480.2%
20M
8:44/mi
2:45:20
↑ 64↓ 500.2%
21M
9:45/mi
2:55:05
↑ 106↓ 241.6%
35K· 21.75 mi
8:00/mi
3:01:04
↑ 17↓ 861.7%
23M
8:34/mi
3:11:48
↑ 23↓ 630.6%
24M
8:12/mi
3:20:00
↓ 821.3%
40K· 24.85 mi
8:38/mi
3:27:23
↓ 200.3%
25.2M
9:17/mi
3:30:35
↑ 13↓ 160.2%
Finish· 26.22 mi
8:01/mi
3:38:45
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:33
Pace7:59 /mi
2nd Half
Distance13.11 mi
Time1:54:12
Pace8:43 /mi
📊Positive Split: 9.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:5023:527:4123:52
7:41
-
10K
6.21 mi11:17:4647:487:4223:56
7:42
+0:01
15K
9.32 mi11:42:231:12:257:4624:37
7:55
+0:13
20K
12.43 mi12:08:501:38:527:5726:27
8:31
+0:36
Half
13.11 mi12:14:311:44:337:595:41
8:20
-0:11
25K
15.53 mi12:35:492:05:518:0621:18
8:47
+0:27
30K
18.64 mi13:03:262:33:288:1427:37
8:53
+0:06
20M
20.00 mi13:15:182:45:208:1611:52
8:44
-0:09
21M
21.00 mi13:25:032:55:058:209:45
9:45
+1:01
35K
21.75 mi13:31:023:01:048:205:59
8:00
-1:45
23M
23.00 mi13:41:463:11:488:2010:44
8:34
+0:34
24M
24.00 mi13:49:583:20:008:208:12
8:12
-0:22
40K
24.85 mi13:57:213:27:238:217:23
8:38
+0:26
25.2M
25.20 mi14:00:333:30:358:213:12
9:17
+0:39
Finish
26.22 mi14:08:433:38:458:218:10
8:01
-1:16

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

7:41 /mi

Average Pace

8:21 /mi

Slowest Pace

9:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:34:46

43% of race

Time at Steady Pace

1:23:25

38% of race

Time at Slower Pace

40:34

19% of race

Average Pace: 8:21 /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 mi10:53:5023:527:4123:52
7:41
#11310
10K
6.21 mi11:17:4647:487:4223:56
7:42
#11744
15K
9.32 mi11:42:231:12:257:4624:37
7:55
#12400
20K
12.43 mi12:08:501:38:527:5726:27
8:31
#13745
Half
13.11 mi12:14:311:44:337:595:41
8:20
#13912
25K
15.53 mi12:35:492:05:518:0621:18
8:47
#14661
30K
18.64 mi13:03:262:33:288:1427:37
8:53
#15019
20M
20.00 mi13:15:182:45:208:1611:52
8:44
#15012
21M
21.00 mi13:25:032:55:058:209:45
9:45
#15125
35K
21.75 mi13:31:023:01:048:205:59
8:00
#15024
23M
23.00 mi13:41:463:11:488:2010:44
8:34
#14922
24M
24.00 mi13:49:583:20:008:208:12
8:12
#14798
40K
24.85 mi13:57:213:27:238:217:23
8:38
#14734
25.2M
25.20 mi14:00:333:30:358:213:12
9:17
#14718
Finish
26.22 mi14:08:433:38:458:218:10
8:01
#14623
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi113102499249913787(Top 52%)3960(Top 35%)3960(Top 211%)
10K6.21 mi3.10 mi11744-4342731-2322731-23212299(Top 46%)3047(Top 27%)3047(Top 162%)
15K9.32 mi3.11 mi12400-6563124-3933124-39313787(Top 52%)3960(Top 35%)3960(Top 211%)
20K12.43 mi3.11 mi13745-13453935-8113935-81116946(Top 64%)5893(Top 52%)5893(Top 314%)
Half13.11 mi0.68 mi13912-1674035-1004035-10016675(Top 63%)5686(Top 50%)5686(Top 303%)
25K15.53 mi2.42 mi14661-7494502-4674502-46717875(Top 67%)6497(Top 57%)6497(Top 346%)
30K18.64 mi3.11 mi15019-3584762-2604762-26016591(Top 62%)5828(Top 51%)5828(Top 310%)
20M20.00 mi1.36 mi15012+74782-204782-2015063(Top 57%)5030(Top 44%)5030(Top 268%)
21M21.00 mi1.00 mi15125-1134877-954877-9517054(Top 64%)6217(Top 54%)6217(Top 331%)
35K21.75 mi0.75 mi15024+1014827+504827+5012189(Top 46%)3552(Top 31%)3552(Top 189%)
23M23.00 mi1.25 mi14922+1024787+404787+4013680(Top 51%)4438(Top 39%)4438(Top 236%)
24M24.00 mi1.00 mi14798+1244732+554732+5512646(Top 48%)3946(Top 35%)3946(Top 210%)
40K24.85 mi0.85 mi14734+644722+104722+1014186(Top 53%)4848(Top 42%)4848(Top 258%)
25.2M25.20 mi0.35 mi14718+164723-14723-114141(Top 53%)4825(Top 42%)4825(Top 257%)
Finish26.22 mi1.02 mi14623+954677+464677+4612270(Top 46%)3854(Top 34%)3854(Top 205%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21story building
+97ft-345ft

Overall

13787

Females

3960

F40-44

3960

5K→10K

3.1 - 6.2 mi

Top 46%
×5story building
+79ft-138ft

Overall

12299

Females

3047

F40-44

3047

10K→15K

6.2 - 9.3 mi

Top 52%
×3story building
+67ft-78ft

Overall

13787

Females

3960

F40-44

3960

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

16946

Females

5893

F40-44

5893

20K→Half

12.4 - 13.1 mi

Top 63%
×2story building
+19ft-37ft

Overall

16675

Females

5686

F40-44

5686

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

17875

Females

6497

F40-44

6497

25K→30K

15.5 - 18.6 mi

Top 62%
×9story building
+181ft-148ft

Overall

16591

Females

5828

F40-44

5828

30K→20M

18.6 - 20.0 mi

Top 57%
×5story building
+64ft-50ft

Overall

15063

Females

5030

F40-44

5030

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

17054

Females

6217

F40-44

6217

21M→35K

21.0 - 21.8 mi

Top 46%
×7story building
+17ft-86ft

Overall

12189

Females

3552

F40-44

3552

35K→23M

21.8 - 23.0 mi

Top 51%
×5story building
+23ft-63ft

Overall

13680

Females

4438

F40-44

4438

23M→24M

23.0 - 24.0 mi

Top 48%
×6story building
+12ft-82ft

Overall

12646

Females

3946

F40-44

3946

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

14186

Females

4848

F40-44

4848

40K→25.2M

24.9 - 25.2 mi

Top 53%
×1story
+13ft-16ft

Overall

14141

Females

4825

F40-44

4825

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2story building
+22ft-21ft

Overall

12270

Females

3854

F40-44

3854

Passing Analysis

Category:
Athletes Passed
1081
Passed By
4394
Net Change
-3313
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11310
5K → 10K149583-434#11310#11744
10K → 15K46702-656#11744#12400
15K → 20K211366-1345#12400#13745
20K → Half6173-167#13745#13912
Half → 25K26775-749#13912#14661
25K → 30K78436-358#14661#15019
30K → 20M8679+7#15019#15012
20M → 21M56169-113#15012#15125
21M → 35K1098+101#15125#15024
35K → 23M12624+102#15024#14922
23M → 24M13814+124#14922#14798
24M → 40K8824+64#14798#14734
40K → 25.2M3923+16#14734#14718
25.2M → Finish11318+95#14718#14623
TOTALS10814394-3313
📊

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