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BOSTON MARATHON 2023

Yan Xu

Bib: 19509•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 49%
Gender (Female)
#0 / 11423
Top 33%
Masters (Masters Women)
#0 / 6539
Top 19%
Division (F50-54)
#0 / 1207
Top 12%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:19
Rank: #12638
Start → 5K
7:50/mi
24:19 split
10K· 6.21 mi
48:42
Rank: #13065 (-427)
5K → 10K
7:51/mi
24:23 split
15K· 9.32 mi
1:13:14
Rank: #13205 (-140)
10K → 15K
7:54/mi
24:32 split
20K· 12.43 mi
1:38:14
Rank: #13364 (-159)
15K → 20K
8:03/mi
25:00 split
Half· 13.11 mi
1:43:40
Rank: #13381 (-17)
20K → Half
7:58/mi
5:26 split
25K· 15.53 mi
2:03:17
Rank: #13350 (+31)
Half → 25K
8:05/mi
19:37 split
30K· 18.64 mi
2:29:12
Rank: #13329 (+21)
25K → 30K
8:21/mi
25:55 split
20M
2:40:31
Rank: #13247 (+82)
30K → 20M
8:20/mi
11:19 split
21M
2:49:26
Rank: #13191 (+56)
20M → 21M
8:55/mi
8:55 split
35K· 21.75 mi
2:55:26
Rank: #13149 (+42)
21M → 35K
8:01/mi
6:00 split
23M
3:06:00
Rank: #13096 (+53)
35K → 23M
8:26/mi
10:34 split
24M
3:13:58
Rank: #12993 (+103)
23M → 24M
7:58/mi
7:58 split
40K· 24.85 mi
3:21:07
Rank: #12963 (+30)
24M → 40K
8:22/mi
7:09 split
25.2M
3:24:18
Rank: #12967 (-4)
40K → 25.2M
9:14/mi
3:11 split
Finish· 26.22 mi
3:33:04
Rank: #13068 (-101)
25.2M → Finish
8:36/mi
8:46 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:40
Pace7:54 /mi
2nd Half
Distance13.11 mi
Time1:49:24
Pace8:21 /mi
📊Positive Split: 5.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:0424:197:5024:19
7:50
-
10K
6.21 mi11:39:2748:427:5024:23
7:51
+0:01
15K
9.32 mi12:03:591:13:147:5124:32
7:54
+0:03
20K
12.43 mi12:28:591:38:147:5425:00
8:03
+0:09
Half
13.11 mi12:34:251:43:407:545:26
7:58
-0:05
25K
15.53 mi12:54:022:03:177:5619:37
8:05
+0:07
30K
18.64 mi13:19:572:29:128:0025:55
8:21
+0:16
20M
20.00 mi13:31:162:40:318:0211:19
8:20
-0:01
21M
21.00 mi13:40:112:49:268:048:55
8:55
+0:35
35K
21.75 mi13:46:112:55:268:046:00
8:01
-0:54
23M
23.00 mi13:56:453:06:008:0510:34
8:26
+0:25
24M
24.00 mi14:04:433:13:588:057:58
7:58
-0:28
40K
24.85 mi14:11:523:21:078:057:09
8:22
+0:24
25.2M
25.20 mi14:15:033:24:188:063:11
9:14
+0:52
Finish
26.22 mi14:23:493:33:048:088:46
8:36
-0:38

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

7:50 /mi

Average Pace

8:08 /mi

Slowest Pace

9:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:20:58

94% of race

Time at Steady Pace

12:06

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:08 /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 mi11:15:0424:197:5024:19
7:50
#12638
10K
6.21 mi11:39:2748:427:5024:23
7:51
#13065
15K
9.32 mi12:03:591:13:147:5124:32
7:54
#13205
20K
12.43 mi12:28:591:38:147:5425:00
8:03
#13364
Half
13.11 mi12:34:251:43:407:545:26
7:58
#13381
25K
15.53 mi12:54:022:03:177:5619:37
8:05
#13350
30K
18.64 mi13:19:572:29:128:0025:55
8:21
#13329
20M
20.00 mi13:31:162:40:318:0211:19
8:20
#13247
21M
21.00 mi13:40:112:49:268:048:55
8:55
#13191
35K
21.75 mi13:46:112:55:268:046:00
8:01
#13149
23M
23.00 mi13:56:453:06:008:0510:34
8:26
#13096
24M
24.00 mi14:04:433:13:588:057:58
7:58
#12993
40K
24.85 mi14:11:523:21:078:057:09
8:22
#12963
25.2M
25.20 mi14:15:033:24:188:063:11
9:14
#12967
Finish
26.22 mi14:23:493:33:048:088:46
8:36
#13068
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi126383244324413512(Top 51%)3785(Top 33%)3785(Top 314%)
10K6.21 mi3.10 mi13065-4273486-2423486-24213558(Top 51%)3768(Top 33%)3768(Top 312%)
15K9.32 mi3.11 mi13205-1403581-953581-9513512(Top 51%)3785(Top 33%)3785(Top 314%)
20K12.43 mi3.11 mi13364-1593701-1203701-12013816(Top 52%)3996(Top 35%)3996(Top 331%)
Half13.11 mi0.68 mi13381-173712-113712-1114097(Top 53%)4128(Top 36%)4128(Top 342%)
25K15.53 mi2.42 mi13350+313716-43716-413450(Top 51%)3889(Top 34%)3889(Top 322%)
30K18.64 mi3.11 mi13329+213742-263742-2613307(Top 50%)3923(Top 34%)3923(Top 325%)
20M20.00 mi1.36 mi13247+823705+373705+3712560(Top 47%)3617(Top 32%)3617(Top 300%)
21M21.00 mi1.00 mi13191+563683+223683+2212949(Top 49%)3913(Top 34%)3913(Top 324%)
35K21.75 mi0.75 mi13149+423681+23681+212323(Top 46%)3614(Top 32%)3614(Top 299%)
23M23.00 mi1.25 mi13096+533679+23679+212868(Top 48%)3992(Top 35%)3992(Top 331%)
24M24.00 mi1.00 mi12993+1033642+373642+3711044(Top 41%)3117(Top 27%)3117(Top 258%)
40K24.85 mi0.85 mi12963+303655-133655-1312494(Top 47%)3935(Top 34%)3935(Top 326%)
25.2M25.20 mi0.35 mi12967-43665-103665-1013836(Top 52%)4647(Top 41%)4647(Top 385%)
Finish26.22 mi1.02 mi13068-1013739-743739-7415997(Top 60%)5798(Top 51%)5798(Top 480%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21story building
+97ft-345ft

Overall

13512

Females

3785

F50-54

3785

5K→10K

3.1 - 6.2 mi

Top 51%
×5story building
+79ft-138ft

Overall

13558

Females

3768

F50-54

3768

10K→15K

6.2 - 9.3 mi

Top 51%
×3story building
+67ft-78ft

Overall

13512

Females

3785

F50-54

3785

15K→20K

9.3 - 12.4 mi

Top 52%
×5story building
+106ft-86ft

Overall

13816

Females

3996

F50-54

3996

20K→Half

12.4 - 13.1 mi

Top 53%
×2story building
+19ft-37ft

Overall

14097

Females

4128

F50-54

4128

Half→25K

13.1 - 15.5 mi

Top 51%
×4story building
+66ft-88ft

Overall

13450

Females

3889

F50-54

3889

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

13307

Females

3923

F50-54

3923

30K→20M

18.6 - 20.0 mi

Top 47%
×5story building
+64ft-50ft

Overall

12560

Females

3617

F50-54

3617

20M→21M

20.0 - 21.0 mi

Top 49%
×8story building
+106ft-24ft

Overall

12949

Females

3913

F50-54

3913

21M→35K

21.0 - 21.8 mi

Top 46%
×7story building
+17ft-86ft

Overall

12323

Females

3614

F50-54

3614

35K→23M

21.8 - 23.0 mi

Top 48%
×5story building
+23ft-63ft

Overall

12868

Females

3992

F50-54

3992

23M→24M

23.0 - 24.0 mi

Top 41%
×6story building
+12ft-82ft

Overall

11044

Females

3117

F50-54

3117

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

12494

Females

3935

F50-54

3935

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

13836

Females

4647

F50-54

4647

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2story building
+22ft-21ft

Overall

15997

Females

5798

F50-54

5798

Passing Analysis

Category:
Athletes Passed
1511
Passed By
1941
Net Change
-430
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12638
5K → 10K148575-427#12638#13065
10K → 15K156296-140#13065#13205
15K → 20K135294-159#13205#13364
20K → Half2340-17#13364#13381
Half → 25K157126+31#13381#13350
25K → 30K202181+21#13350#13329
30K → 20M13048+82#13329#13247
20M → 21M10751+56#13247#13191
21M → 35K8038+42#13191#13149
35K → 23M11966+53#13149#13096
23M → 24M11916+103#13096#12993
24M → 40K8353+30#12993#12963
40K → 25.2M2731-4#12963#12967
25.2M → Finish25126-101#12967#13068
TOTALS15111941-430
📊

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