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BOSTON MARATHON 2023

Yichun Sun

Bib: 13562•F

AB

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 41%
Gender (Female)
#0 / 11423
Top 22%
Masters (Masters Women)
#0 / 6539
Top 10%
Division (F45-49)
#0 / 1817
Top 11%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:09
Rank: #12123
Start → 5K
24:09 | 7:46/mi
10K· 6.21 mi
48:01
Rank: #12082 (+41)
5K → 10K
23:52 | 7:41/mi
15K· 9.32 mi
1:11:44
Rank: #11755 (+327)
10K → 15K
23:43 | 7:38/mi
20K· 12.43 mi
1:35:42
Rank: #11541 (+214)
15K → 20K
23:58 | 7:43/mi
Half· 13.11 mi
1:40:49
Rank: #11460 (+81)
20K → Half
5:07 | 7:30/mi
25K· 15.53 mi
1:59:31
Rank: #11248 (+212)
Half → 25K
18:42 | 7:43/mi
30K· 18.64 mi
2:23:59
Rank: #10958 (+290)
25K → 30K
24:28 | 7:53/mi
20M
2:34:46
Rank: #10829 (+129)
30K → 20M
10:47 | 7:56/mi
21M
2:43:23
Rank: #10851 (-22)
20M → 21M
8:37 | 8:37/mi
35K· 21.75 mi
2:49:16
Rank: #10842 (+9)
21M → 35K
5:53 | 7:52/mi
23M
2:59:34
Rank: #10854 (-12)
35K → 23M
10:18 | 8:14/mi
24M
3:07:32
Rank: #10849 (+5)
23M → 24M
7:58 | 7:58/mi
40K· 24.85 mi
3:14:26
Rank: #10818 (+31)
24M → 40K
6:54 | 8:04/mi
25.2M
3:17:33
Rank: #10851 (-33)
40K → 25.2M
3:07 | 9:02/mi
Finish· 26.22 mi
3:25:45
Rank: #10902 (-51)
25.2M → Finish
8:12 | 8:03/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:49
Pace7:41 /mi
2nd Half
Distance13.11 mi
Time1:44:56
Pace8:00 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:0424:097:4624:09
7:46
-
10K
6.21 mi11:16:5648:017:4423:52
7:41
-0:05
15K
9.32 mi11:40:391:11:447:4223:43
7:38
-0:03
20K
12.43 mi12:04:371:35:427:4223:58
7:43
+0:05
Half
13.11 mi12:09:441:40:497:415:07
7:30
-0:13
25K
15.53 mi12:28:261:59:317:4218:42
7:43
+0:13
30K
18.64 mi12:52:542:23:597:4324:28
7:53
+0:10
20M
20.00 mi13:03:412:34:467:4410:47
7:56
+0:03
21M
21.00 mi13:12:182:43:237:478:37
8:37
+0:41
35K
21.75 mi13:18:112:49:167:475:53
7:52
-0:45
23M
23.00 mi13:28:292:59:347:4810:18
8:14
+0:22
24M
24.00 mi13:36:273:07:327:497:58
7:58
-0:16
40K
24.85 mi13:43:213:14:267:496:54
8:04
+0:06
25.2M
25.20 mi13:46:283:17:337:503:07
9:02
+0:58
Finish
26.22 mi13:54:403:25:457:518:12
8:03
-0:59

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

7:30 /mi

Average Pace

7:51 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

52:42

26% of race

Time at Steady Pace

2:11:01

64% of race

Time at Slower Pace

22:02

11% of race

Average Pace: 7:51 /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 mi10:53:0424:097:4624:09
7:46
#12123
10K
6.21 mi11:16:5648:017:4423:52
7:41
#12082
15K
9.32 mi11:40:391:11:447:4223:43
7:38
#11755
20K
12.43 mi12:04:371:35:427:4223:58
7:43
#11541
Half
13.11 mi12:09:441:40:497:415:07
7:30
#11460
25K
15.53 mi12:28:261:59:317:4218:42
7:43
#11248
30K
18.64 mi12:52:542:23:597:4324:28
7:53
#10958
20M
20.00 mi13:03:412:34:467:4410:47
7:56
#10829
21M
21.00 mi13:12:182:43:237:478:37
8:37
#10851
35K
21.75 mi13:18:112:49:167:475:53
7:52
#10842
23M
23.00 mi13:28:292:59:347:4810:18
8:14
#10854
24M
24.00 mi13:36:273:07:327:497:58
7:58
#10849
40K
24.85 mi13:43:213:14:267:496:54
8:04
#10818
25.2M
25.20 mi13:46:283:17:337:503:07
9:02
#10851
Finish
26.22 mi13:54:403:25:457:518:12
8:03
#10902
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi121232936293611311(Top 42%)2521(Top 22%)2521(Top 139%)
10K6.21 mi3.10 mi12082+412901+352901+3512080(Top 45%)2914(Top 26%)2914(Top 160%)
15K9.32 mi3.11 mi11755+3272759+1422759+14211311(Top 42%)2521(Top 22%)2521(Top 139%)
20K12.43 mi3.11 mi11541+2142649+1102649+11011044(Top 41%)2426(Top 21%)2426(Top 134%)
Half13.11 mi0.68 mi11460+812600+492600+4910310(Top 39%)2043(Top 18%)2043(Top 112%)
25K15.53 mi2.42 mi11248+2122500+1002500+10010420(Top 39%)2197(Top 19%)2197(Top 121%)
30K18.64 mi3.11 mi10958+2902381+1192381+1199956(Top 37%)2146(Top 19%)2146(Top 118%)
20M20.00 mi1.36 mi10829+1292346+352346+359820(Top 37%)2162(Top 19%)2162(Top 119%)
21M21.00 mi1.00 mi10851-222385-392385-3911168(Top 42%)2950(Top 26%)2950(Top 162%)
35K21.75 mi0.75 mi10842+92396-112396-1111159(Top 42%)2946(Top 26%)2946(Top 162%)
23M23.00 mi1.25 mi10854-122425-292425-2911378(Top 43%)3193(Top 28%)3193(Top 176%)
24M24.00 mi1.00 mi10849+52452-272452-2711022(Top 41%)3095(Top 27%)3095(Top 170%)
40K24.85 mi0.85 mi10818+312462-102462-1010536(Top 40%)2898(Top 25%)2898(Top 159%)
25.2M25.20 mi0.35 mi10851-332495-332495-3312755(Top 48%)4088(Top 36%)4088(Top 225%)
Finish26.22 mi1.02 mi10902-512545-502545-5012451(Top 47%)3928(Top 34%)3928(Top 216%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21stories
+97ft-345ft

Overall

11311

Females

2521

F45-49

2521

5K→10K

3.1 - 6.2 mi

Top 45%
×5stories
+79ft-138ft

Overall

12080

Females

2914

F45-49

2914

10K→15K

6.2 - 9.3 mi

Top 42%
×3stories
+67ft-78ft

Overall

11311

Females

2521

F45-49

2521

15K→20K

9.3 - 12.4 mi

Top 41%
×5stories
+106ft-86ft

Overall

11044

Females

2426

F45-49

2426

20K→Half

12.4 - 13.1 mi

Top 39%
×2stories
+19ft-37ft

Overall

10310

Females

2043

F45-49

2043

Half→25K

13.1 - 15.5 mi

Top 39%
×4stories
+66ft-88ft

Overall

10420

Females

2197

F45-49

2197

25K→30K

15.5 - 18.6 mi

Top 37%
×9stories
+181ft-148ft

Overall

9956

Females

2146

F45-49

2146

30K→20M

18.6 - 20.0 mi

Top 37%
×5stories
+64ft-50ft

Overall

9820

Females

2162

F45-49

2162

20M→21M

20.0 - 21.0 mi

Top 42%
×8stories
+106ft-24ft

Overall

11168

Females

2950

F45-49

2950

21M→35K

21.0 - 21.8 mi

Top 42%
×7stories
+17ft-86ft

Overall

11159

Females

2946

F45-49

2946

35K→23M

21.8 - 23.0 mi

Top 43%
×5stories
+23ft-63ft

Overall

11378

Females

3193

F45-49

3193

23M→24M

23.0 - 24.0 mi

Top 41%
×6stories
+12ft-82ft

Overall

11022

Females

3095

F45-49

3095

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

10536

Females

2898

F45-49

2898

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

12755

Females

4088

F45-49

4088

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2stories
+22ft-21ft

Overall

12451

Females

3928

F45-49

3928

Passing Analysis

Category:
Athletes Passed
2227*
Passed By
1006
Net Change
+1221
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12123
5K → 10K318277+41#12123#12082
10K → 15K39366+327#12082#11755
15K → 20K27561+214#11755#11541
20K → Half854+81#11541#11460
Half → 25K24331+212#11460#11248
25K → 30K33343+290#11248#10958
30K → 20M161*32+129#10958#10829
20M → 21M6587-22#10829#10851
21M → 35K4940+9#10851#10842
35K → 23M8092-12#10842#10854
23M → 24M7368+5#10854#10849
24M → 40K8049+31#10849#10818
40K → 25.2M2457-33#10818#10851
25.2M → Finish4899-51#10851#10902
TOTALS2227*1006+1221

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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🔥Passing Intensity

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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