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BOSTON MARATHON 2023

Xiaofeng Wang

Bib: 19537•F

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 48%
Masters (Masters Women)
#0 / 6539
Top 38%
Division (F45-49)
#0 / 1817
Top 44%
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
8:00/mi
24:50
↑ 97↓ 3451.5%
10K· 6.21 mi
7:55/mi
49:25
↑ 79↓ 1380.4%
15K· 9.32 mi
8:11/mi
1:14:51
↑ 67↓ 78
20K· 12.43 mi
8:25/mi
1:41:01
↑ 106↓ 860.1%
Half· 13.11 mi
8:18/mi
1:46:41
↑ 19↓ 370.5%
25K· 15.53 mi
8:41/mi
2:07:43
↑ 66↓ 880.2%
30K· 18.64 mi
9:00/mi
2:35:41
↑ 181↓ 1480.2%
20M
8:58/mi
2:47:52
↑ 64↓ 500.2%
21M
9:25/mi
2:57:17
↑ 106↓ 241.6%
35K· 21.75 mi
8:23/mi
3:03:33
↑ 17↓ 861.7%
23M
8:54/mi
3:14:42
↑ 23↓ 630.6%
24M
9:04/mi
3:23:46
↓ 821.3%
40K· 24.85 mi
9:17/mi
3:31:42
↓ 200.3%
25.2M
10:00/mi
3:35:09
↑ 13↓ 160.2%
Finish· 26.22 mi
9:11/mi
3:44:31
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:41
Pace8:08 /mi
2nd Half
Distance13.11 mi
Time1:57:50
Pace8:59 /mi
📊Positive Split: 10.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:2824:508:0024:50
8:00
-
10K
6.21 mi11:41:0349:257:5724:35
7:55
-0:05
15K
9.32 mi12:06:291:14:518:0225:26
8:11
+0:16
20K
12.43 mi12:32:391:41:018:0826:10
8:25
+0:14
Half
13.11 mi12:38:191:46:418:085:40
8:18
-0:07
25K
15.53 mi12:59:212:07:438:1321:02
8:41
+0:23
30K
18.64 mi13:27:192:35:418:2127:58
9:00
+0:19
20M
20.00 mi13:39:302:47:528:2412:11
8:58
-0:02
21M
21.00 mi13:48:552:57:178:279:25
9:25
+0:27
35K
21.75 mi13:55:113:03:338:266:16
8:23
-1:02
23M
23.00 mi14:06:203:14:428:2811:09
8:54
+0:31
24M
24.00 mi14:15:243:23:468:299:04
9:04
+0:10
40K
24.85 mi14:23:203:31:428:317:56
9:17
+0:13
25.2M
25.20 mi14:26:473:35:098:323:27
10:00
+0:43
Finish
26.22 mi14:36:093:44:318:349:22
9:11
-0:49

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

7:55 /mi

Average Pace

8:34 /mi

Slowest Pace

10:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:57

50% of race

Time at Steady Pace

1:21:24

36% of race

Time at Slower Pace

30:10

13% of race

Average Pace: 8:34 /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 mi11:16:2824:508:0024:50
8:00
#13987
10K
6.21 mi11:41:0349:257:5724:35
7:55
#14016
15K
9.32 mi12:06:291:14:518:0225:26
8:11
#14586
20K
12.43 mi12:32:391:41:018:0826:10
8:25
#15088
Half
13.11 mi12:38:191:46:418:085:40
8:18
#15164
25K
15.53 mi12:59:212:07:438:1321:02
8:41
#15506
30K
18.64 mi13:27:192:35:418:2127:58
9:00
#15823
20M
20.00 mi13:39:302:47:528:2412:11
8:58
#15853
21M
21.00 mi13:48:552:57:178:279:25
9:25
#15813
35K
21.75 mi13:55:113:03:338:266:16
8:23
#15746
23M
23.00 mi14:06:203:14:428:2811:09
8:54
#15711
24M
24.00 mi14:15:243:23:468:299:04
9:04
#15812
40K
24.85 mi14:23:203:31:428:317:56
9:17
#15878
25.2M
25.20 mi14:26:473:35:098:323:27
10:00
#15903
Finish
26.22 mi14:36:093:44:318:349:22
9:11
#16056
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi139874025402515775(Top 59%)5154(Top 45%)5154(Top 284%)
10K6.21 mi3.10 mi14016-294054-294054-2914099(Top 53%)4113(Top 36%)4113(Top 226%)
15K9.32 mi3.11 mi14586-5704405-3514405-35115775(Top 59%)5154(Top 45%)5154(Top 284%)
20K12.43 mi3.11 mi15088-5024740-3354740-33516385(Top 62%)5580(Top 49%)5580(Top 307%)
Half13.11 mi0.68 mi15164-764783-434783-4316550(Top 62%)5633(Top 49%)5633(Top 310%)
25K15.53 mi2.42 mi15506-3425033-2505033-25017244(Top 65%)6135(Top 54%)6135(Top 338%)
30K18.64 mi3.11 mi15823-3175267-2345267-23417177(Top 65%)6176(Top 54%)6176(Top 340%)
20M20.00 mi1.36 mi15853-305314-475314-4716360(Top 61%)5785(Top 51%)5785(Top 318%)
21M21.00 mi1.00 mi15813+405309+55309+515577(Top 59%)5391(Top 47%)5391(Top 297%)
35K21.75 mi0.75 mi15746+675282+275282+2714627(Top 55%)4909(Top 43%)4909(Top 270%)
23M23.00 mi1.25 mi15711+355291-95291-915584(Top 59%)5503(Top 48%)5503(Top 303%)
24M24.00 mi1.00 mi15812-1015370-795370-7917543(Top 66%)6644(Top 58%)6644(Top 366%)
40K24.85 mi0.85 mi15878-665412-425412-4217433(Top 65%)6642(Top 58%)6642(Top 366%)
25.2M25.20 mi0.35 mi15903-255429-175429-1717415(Top 65%)6648(Top 58%)6648(Top 366%)
Finish26.22 mi1.02 mi16056-1535521-925521-9218875(Top 71%)7368(Top 65%)7368(Top 406%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21story building
+97ft-345ft

Overall

15775

Females

5154

F45-49

5154

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

14099

Females

4113

F45-49

4113

10K→15K

6.2 - 9.3 mi

Top 59%
×3story building
+67ft-78ft

Overall

15775

Females

5154

F45-49

5154

15K→20K

9.3 - 12.4 mi

Top 62%
×5story building
+106ft-86ft

Overall

16385

Females

5580

F45-49

5580

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

16550

Females

5633

F45-49

5633

Half→25K

13.1 - 15.5 mi

Top 65%
×4story building
+66ft-88ft

Overall

17244

Females

6135

F45-49

6135

25K→30K

15.5 - 18.6 mi

Top 65%
×9story building
+181ft-148ft

Overall

17177

Females

6176

F45-49

6176

30K→20M

18.6 - 20.0 mi

Top 61%
×5story building
+64ft-50ft

Overall

16360

Females

5785

F45-49

5785

20M→21M

20.0 - 21.0 mi

Top 59%
×8story building
+106ft-24ft

Overall

15577

Females

5391

F45-49

5391

21M→35K

21.0 - 21.8 mi

Top 55%
×7story building
+17ft-86ft

Overall

14627

Females

4909

F45-49

4909

35K→23M

21.8 - 23.0 mi

Top 59%
×5story building
+23ft-63ft

Overall

15584

Females

5503

F45-49

5503

23M→24M

23.0 - 24.0 mi

Top 66%
×6story building
+12ft-82ft

Overall

17543

Females

6644

F45-49

6644

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

17433

Females

6642

F45-49

6642

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

17415

Females

6648

F45-49

6648

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2story building
+22ft-21ft

Overall

18875

Females

7368

F45-49

7368

Passing Analysis

Category:
Athletes Passed
1056
Passed By
3125
Net Change
-2069
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13987
5K → 10K273302-29#13987#14016
10K → 15K61631-570#14016#14586
15K → 20K71573-502#14586#15088
20K → Half1995-76#15088#15164
Half → 25K56398-342#15164#15506
25K → 30K84401-317#15506#15823
30K → 20M88118-30#15823#15853
20M → 21M10262+40#15853#15813
21M → 35K8417+67#15813#15746
35K → 23M9257+35#15746#15711
23M → 24M45146-101#15711#15812
24M → 40K37103-66#15812#15878
40K → 25.2M2348-25#15878#15903
25.2M → Finish21174-153#15903#16056
TOTALS10563125-2069
📊

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