Kai Yiu Sung

Bib: 23203F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 48%
Masters (Masters Women)
#0 / 6759
Top 37%
Division (F45-49)
#0 / 1813
Top 46%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:19
Rank: #17736
Start5K
25:19 | 8:09/mi
10K· 6.21 mi
51:08
Rank: #18174 (-438)
5K10K
25:49 | 8:19/mi
15K· 9.32 mi
1:17:13
Rank: #18311 (-137)
10K15K
26:05 | 8:24/mi
20K· 12.43 mi
1:43:20
Rank: #18091 (+220)
15K20K
26:07 | 8:24/mi
Half· 13.11 mi
1:49:01
Rank: #18068 (+23)
20KHalf
5:41 | 8:20/mi
25K· 15.53 mi
2:09:30
Rank: #17827 (+241)
Half25K
20:29 | 8:27/mi
30K· 18.64 mi
2:37:04
Rank: #17636 (+191)
25K30K
27:34 | 8:52/mi
20M
2:49:12
Rank: #17522 (+114)
30K20M
12:08 | 8:56/mi
21M
2:58:34
Rank: #17382 (+140)
20M21M
9:22 | 9:22/mi
35K· 21.75 mi
3:05:01
Rank: #17319 (+63)
21M35K
6:27 | 8:37/mi
23M
3:15:59
Rank: #17156 (+163)
35K23M
10:58 | 8:46/mi
24M
3:24:27
Rank: #17021 (+135)
23M24M
8:28 | 8:28/mi
40K· 24.85 mi
3:31:57
Rank: #16936 (+85)
24M40K
7:30 | 8:46/mi
25.2M
3:35:11
Rank: #16870 (+66)
40K25.2M
3:14 | 9:23/mi
Finish· 26.22 mi
3:43:47
Rank: #16836 (+34)
25.2MFinish
8:36 | 8:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:01
Pace8:19 /mi
2nd Half
Distance13.11 mi
Time1:54:46
Pace8:45 /mi
📊Positive Split: 5.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:5625:198:0925:19
8:09
-
10K
6.21 mi11:46:4551:088:1425:49
8:19
+0:10
15K
9.32 mi12:12:501:17:138:1726:05
8:24
+0:05
20K
12.43 mi12:38:571:43:208:1926:07
8:24
0:00
Half
13.11 mi12:44:381:49:018:195:41
8:20
-0:04
25K
15.53 mi13:05:072:09:308:2020:29
8:27
+0:07
30K
18.64 mi13:32:412:37:048:2627:34
8:52
+0:25
20M
20.00 mi13:44:492:49:128:2812:08
8:56
+0:04
21M
21.00 mi13:54:112:58:348:309:22
9:22
+0:26
35K
21.75 mi14:00:383:05:018:306:27
8:37
-0:45
23M
23.00 mi14:11:363:15:598:3110:58
8:46
+0:09
24M
24.00 mi14:20:043:24:278:318:28
8:28
-0:18
40K
24.85 mi14:27:343:31:578:327:30
8:46
+0:18
25.2M
25.20 mi14:30:483:35:118:323:14
9:23
+0:37
Finish
26.22 mi14:39:243:43:478:328:36
8:26
-0:57

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

8:09 /mi

Average Pace

8:32 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:31:11

94% of race

Time at Steady Pace

12:36

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:32 /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 mi11:20:5625:198:0925:19
8:09
#17736
10K
6.21 mi11:46:4551:088:1425:49
8:19
#18174
15K
9.32 mi12:12:501:17:138:1726:05
8:24
#18311
20K
12.43 mi12:38:571:43:208:1926:07
8:24
#18091
Half
13.11 mi12:44:381:49:018:195:41
8:20
#18068
25K
15.53 mi13:05:072:09:308:2020:29
8:27
#17827
30K
18.64 mi13:32:412:37:048:2627:34
8:52
#17636
20M
20.00 mi13:44:492:49:128:2812:08
8:56
#17522
21M
21.00 mi13:54:112:58:348:309:22
9:22
#17382
35K
21.75 mi14:00:383:05:018:306:27
8:37
#17319
23M
23.00 mi14:11:363:15:598:3110:58
8:46
#17156
24M
24.00 mi14:20:043:24:278:318:28
8:28
#17021
40K
24.85 mi14:27:343:31:578:327:30
8:46
#16936
25.2M
25.20 mi14:30:483:35:118:323:14
9:23
#16870
Finish
26.22 mi14:39:243:43:478:328:36
8:26
#16836
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi177366179617918682(Top 66%)6709(Top 55%)6709(Top 370%)
10K6.21 mi3.10 mi18174-4386434-2556434-25518618(Top 66%)6661(Top 54%)6661(Top 367%)
15K9.32 mi3.11 mi18311-1376516-826516-8218682(Top 66%)6709(Top 55%)6709(Top 370%)
20K12.43 mi3.11 mi18091+2206390+1266390+12617595(Top 62%)6107(Top 50%)6107(Top 337%)
Half13.11 mi0.68 mi18068+236378+126378+1218138(Top 64%)6388(Top 52%)6388(Top 352%)
25K15.53 mi2.42 mi17827+2416257+1216257+12116870(Top 59%)5781(Top 47%)5781(Top 319%)
30K18.64 mi3.11 mi17636+1916202+556202+5517012(Top 60%)6037(Top 49%)6037(Top 333%)
20M20.00 mi1.36 mi17522+1146157+456157+4516426(Top 58%)5839(Top 48%)5839(Top 322%)
21M21.00 mi1.00 mi17382+1406105+526105+5215498(Top 55%)5456(Top 45%)5456(Top 301%)
35K21.75 mi0.75 mi17319+636093+126093+1216221(Top 57%)5906(Top 48%)5906(Top 326%)
23M23.00 mi1.25 mi17156+1636026+676026+6714909(Top 52%)5289(Top 43%)5289(Top 292%)
24M24.00 mi1.00 mi17021+1355970+565970+5614336(Top 50%)5005(Top 41%)5005(Top 276%)
40K24.85 mi0.85 mi16936+855951+195951+1915064(Top 53%)5559(Top 45%)5559(Top 307%)
25.2M25.20 mi0.35 mi16870+665928+235928+2313978(Top 49%)5021(Top 41%)5021(Top 277%)
Finish26.22 mi1.02 mi16836+345925+35925+315853(Top 56%)5942(Top 49%)5942(Top 328%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21stories
+97ft-345ft

Overall

18682

Females

6709

F45-49

6709

5K→10K

3.1 - 6.2 mi

Top 66%
×5stories
+79ft-138ft

Overall

18618

Females

6661

F45-49

6661

10K→15K

6.2 - 9.3 mi

Top 66%
×3stories
+67ft-78ft

Overall

18682

Females

6709

F45-49

6709

15K→20K

9.3 - 12.4 mi

Top 62%
×5stories
+106ft-86ft

Overall

17595

Females

6107

F45-49

6107

20K→Half

12.4 - 13.1 mi

Top 64%
×2stories
+19ft-37ft

Overall

18138

Females

6388

F45-49

6388

Half→25K

13.1 - 15.5 mi

Top 59%
×4stories
+66ft-88ft

Overall

16870

Females

5781

F45-49

5781

25K→30K

15.5 - 18.6 mi

Top 60%
×9stories
+181ft-148ft

Overall

17012

Females

6037

F45-49

6037

30K→20M

18.6 - 20.0 mi

Top 58%
×5stories
+64ft-50ft

Overall

16426

Females

5839

F45-49

5839

20M→21M

20.0 - 21.0 mi

Top 55%
×8stories
+106ft-24ft

Overall

15498

Females

5456

F45-49

5456

21M→35K

21.0 - 21.8 mi

Top 57%
×7stories
+17ft-86ft

Overall

16221

Females

5906

F45-49

5906

35K→23M

21.8 - 23.0 mi

Top 52%
×5stories
+23ft-63ft

Overall

14909

Females

5289

F45-49

5289

23M→24M

23.0 - 24.0 mi

Top 50%
×6stories
+12ft-82ft

Overall

14336

Females

5005

F45-49

5005

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

15064

Females

5559

F45-49

5559

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13978

Females

5021

F45-49

5021

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2stories
+22ft-21ft

Overall

15853

Females

5942

F45-49

5942

Passing Analysis

Category:
Athletes Passed
2306
Passed By
1406
Net Change
+900
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17736
5K10K136574-438#17736#18174
10K15K140277-137#18174#18311
15K20K29676+220#18311#18091
20KHalf4724+23#18091#18068
Half25K28847+241#18068#17827
25K30K321130+191#17827#17636
30K20M16349+114#17636#17522
20M21M17636+140#17522#17382
21M35K9532+63#17382#17319
35K23M19734+163#17319#17156
23M24M15924+135#17156#17021
24M40K11934+85#17021#16936
40K25.2M7610+66#16936#16870
25.2MFinish9359+34#16870#16836
TOTALS23061406+900
📊

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