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BOSTON MARATHON 2023

Chunrong Qin

Bib: 18819•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 45%
Gender (Female)
#0 / 11423
Top 27%
Masters (Masters Women)
#0 / 6539
Top 14%
Division (F45-49)
#0 / 1817
Top 15%
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
7:58/mi
24:46
↑ 97↓ 3451.5%
10K· 6.21 mi
7:51/mi
49:10
↑ 79↓ 1380.4%
15K· 9.32 mi
7:50/mi
1:13:30
↑ 67↓ 78
20K· 12.43 mi
7:53/mi
1:37:58
↑ 106↓ 860.1%
Half· 13.11 mi
7:42/mi
1:43:13
↑ 19↓ 370.5%
25K· 15.53 mi
7:52/mi
2:02:17
↑ 66↓ 880.2%
30K· 18.64 mi
8:08/mi
2:27:32
↑ 181↓ 1480.2%
20M
8:06/mi
2:38:32
↑ 64↓ 500.2%
21M
8:29/mi
2:47:01
↑ 106↓ 241.6%
35K· 21.75 mi
7:53/mi
2:52:55
↑ 17↓ 861.7%
23M
8:06/mi
3:03:03
↑ 23↓ 630.6%
24M
7:50/mi
3:10:53
↓ 821.3%
40K· 24.85 mi
8:03/mi
3:17:46
↓ 200.3%
25.2M
8:42/mi
3:20:46
↑ 13↓ 160.2%
Finish· 26.22 mi
8:03/mi
3:28:58
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:13
Pace7:52 /mi
2nd Half
Distance13.11 mi
Time1:45:45
Pace8:04 /mi
📊Positive Split: 2.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:2424:467:5824:46
7:58
-
10K
6.21 mi11:45:4849:107:5524:24
7:51
-0:07
15K
9.32 mi12:10:081:13:307:5324:20
7:50
-0:01
20K
12.43 mi12:34:361:37:587:5324:28
7:53
+0:03
Half
13.11 mi12:39:511:43:137:525:15
7:42
-0:11
25K
15.53 mi12:58:552:02:177:5219:04
7:52
+0:10
30K
18.64 mi13:24:102:27:327:5525:15
8:08
+0:16
20M
20.00 mi13:35:102:38:327:5611:00
8:06
-0:02
21M
21.00 mi13:43:392:47:017:578:29
8:29
+0:23
35K
21.75 mi13:49:332:52:557:575:54
7:53
-0:36
23M
23.00 mi13:59:413:03:037:5810:08
8:06
+0:13
24M
24.00 mi14:07:313:10:537:577:50
7:50
-0:16
40K
24.85 mi14:14:243:17:467:576:53
8:03
+0:13
25.2M
25.20 mi14:17:243:20:467:583:00
8:42
+0:39
Finish
26.22 mi14:25:363:28:587:598:12
8:03
-0:39

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

7:42 /mi

Average Pace

7:59 /mi

Slowest Pace

8:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:17:29

95% of race

Time at Steady Pace

11:29

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:58 /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 mi11:21:2424:467:5824:46
7:58
#13819
10K
6.21 mi11:45:4849:107:5524:24
7:51
#13689
15K
9.32 mi12:10:081:13:307:5324:20
7:50
#13459
20K
12.43 mi12:34:361:37:587:5324:28
7:53
#13158
Half
13.11 mi12:39:511:43:137:525:15
7:42
#13078
25K
15.53 mi12:58:552:02:177:5219:04
7:52
#12801
30K
18.64 mi13:24:102:27:327:5525:15
8:08
#12587
20M
20.00 mi13:35:102:38:327:5611:00
8:06
#12431
21M
21.00 mi13:43:392:47:017:578:29
8:29
#12286
35K
21.75 mi13:49:332:52:557:575:54
7:53
#12239
23M
23.00 mi13:59:413:03:037:5810:08
8:06
#12119
24M
24.00 mi14:07:313:10:537:577:50
7:50
#12019
40K
24.85 mi14:14:243:17:467:576:53
8:03
#11947
25.2M
25.20 mi14:17:243:20:467:583:00
8:42
#11924
Finish
26.22 mi14:25:363:28:587:598:12
8:03
#11947
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi138193907390712989(Top 49%)3467(Top 30%)3467(Top 191%)
10K6.21 mi3.10 mi13689+1303859+483859+4813600(Top 51%)3789(Top 33%)3789(Top 209%)
15K9.32 mi3.11 mi13459+2303724+1353724+13512989(Top 49%)3467(Top 30%)3467(Top 191%)
20K12.43 mi3.11 mi13158+3013583+1413583+14112410(Top 47%)3203(Top 28%)3203(Top 176%)
Half13.11 mi0.68 mi13078+803528+553528+5511920(Top 45%)2872(Top 25%)2872(Top 158%)
25K15.53 mi2.42 mi12801+2773397+1313397+13111661(Top 44%)2870(Top 25%)2870(Top 158%)
30K18.64 mi3.11 mi12587+2143313+843313+8411840(Top 44%)3088(Top 27%)3088(Top 170%)
20M20.00 mi1.36 mi12431+1563229+843229+8411011(Top 41%)2744(Top 24%)2744(Top 151%)
21M21.00 mi1.00 mi12286+1453166+633166+6310420(Top 39%)2591(Top 23%)2591(Top 143%)
35K21.75 mi0.75 mi12239+473159+73159+711334(Top 43%)3041(Top 27%)3041(Top 167%)
23M23.00 mi1.25 mi12119+1203125+343125+3410442(Top 39%)2736(Top 24%)2736(Top 151%)
24M24.00 mi1.00 mi12019+1003090+353090+3510070(Top 38%)2639(Top 23%)2639(Top 145%)
40K24.85 mi0.85 mi11947+723069+213069+2110406(Top 39%)2848(Top 25%)2848(Top 157%)
25.2M25.20 mi0.35 mi11924+233060+93060+910816(Top 41%)3090(Top 27%)3090(Top 170%)
Finish26.22 mi1.02 mi11947-233093-333093-3312456(Top 47%)3933(Top 34%)3933(Top 216%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21story building
+97ft-345ft

Overall

12989

Females

3467

F45-49

3467

5K→10K

3.1 - 6.2 mi

Top 51%
×5story building
+79ft-138ft

Overall

13600

Females

3789

F45-49

3789

10K→15K

6.2 - 9.3 mi

Top 49%
×3story building
+67ft-78ft

Overall

12989

Females

3467

F45-49

3467

15K→20K

9.3 - 12.4 mi

Top 47%
×5story building
+106ft-86ft

Overall

12410

Females

3203

F45-49

3203

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

11920

Females

2872

F45-49

2872

Half→25K

13.1 - 15.5 mi

Top 44%
×4story building
+66ft-88ft

Overall

11661

Females

2870

F45-49

2870

25K→30K

15.5 - 18.6 mi

Top 44%
×9story building
+181ft-148ft

Overall

11840

Females

3088

F45-49

3088

30K→20M

18.6 - 20.0 mi

Top 41%
×5story building
+64ft-50ft

Overall

11011

Females

2744

F45-49

2744

20M→21M

20.0 - 21.0 mi

Top 39%
×8story building
+106ft-24ft

Overall

10420

Females

2591

F45-49

2591

21M→35K

21.0 - 21.8 mi

Top 43%
×7story building
+17ft-86ft

Overall

11334

Females

3041

F45-49

3041

35K→23M

21.8 - 23.0 mi

Top 39%
×5story building
+23ft-63ft

Overall

10442

Females

2736

F45-49

2736

23M→24M

23.0 - 24.0 mi

Top 38%
×6story building
+12ft-82ft

Overall

10070

Females

2639

F45-49

2639

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

10406

Females

2848

F45-49

2848

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

10816

Females

3090

F45-49

3090

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2story building
+22ft-21ft

Overall

12456

Females

3933

F45-49

3933

Passing Analysis

Category:
Athletes Passed
2655
Passed By
783
Net Change
+1872
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13819
5K → 10K370240+130#13819#13689
10K → 15K32797+230#13689#13459
15K → 20K35958+301#13459#13158
20K → Half866+80#13158#13078
Half → 25K30124+277#13078#12801
25K → 30K30086+214#12801#12587
30K → 20M18731+156#12587#12431
20M → 21M17530+145#12431#12286
21M → 35K6417+47#12286#12239
35K → 23M15838+120#12239#12119
23M → 24M12626+100#12119#12019
24M → 40K10230+72#12019#11947
40K → 25.2M4017+23#11947#11924
25.2M → Finish6083-23#11924#11947
TOTALS2655783+1872
📊

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