Sung Jai Lee

Bib: 12645M

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Male)
#0 / 14578
Masters (Masters Men)
#0 / 9729
Division (M50-54)
#0 / 1935
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:41
Rank: #14217
Start5K
7:57/mi
24:41 split
10K· 6.21 mi
48:48
Rank: #13274 (+943)
5K10K
7:46/mi
24:07 split
15K· 9.32 mi
1:13:33
Rank: #13245 (+29)
10K15K
7:58/mi
24:45 split
20K· 12.43 mi
1:41:49
Rank: #14678 (-1433)
15K20K
9:06/mi
28:16 split
Half· 13.11 mi
1:48:03
Rank: #14938 (-260)
20KHalf
9:08/mi
6:14 split
25K· 15.53 mi
2:13:14
Rank: #16190 (-1252)
Half25K
10:23/mi
25:11 split
30K· 18.64 mi
2:47:56
Rank: #17401 (-1211)
25K30K
11:10/mi
34:42 split
20M
3:04:25
Rank: #17980 (-579)
30K20M
12:08/mi
16:29 split
21M
3:17:14
Rank: #18222 (-242)
20M21M
12:49/mi
12:49 split
35K· 21.75 mi
3:24:47
Rank: #18169 (+53)
21M35K
10:06/mi
7:33 split
23M
3:39:23
Rank: #18284 (-115)
35K23M
11:40/mi
14:36 split
24M
3:50:16
Rank: #18309 (-25)
23M24M
10:53/mi
10:53 split
40K· 24.85 mi
4:00:23
Rank: #18399 (-90)
24M40K
11:50/mi
10:07 split
25.2M
4:04:25
Rank: #18341 (+58)
40K25.2M
11:42/mi
4:02 split
Finish· 26.22 mi
4:14:16
Rank: #18268 (+73)
25.2MFinish
9:40/mi
9:51 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:03
Pace8:15 /mi
2nd Half
Distance13.11 mi
Time2:26:13
Pace11:09 /mi
📊Positive Split: 35.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:4524:417:5724:41
7:57
-
10K
6.21 mi11:18:5248:487:5124:07
7:46
-0:11
15K
9.32 mi11:43:371:13:337:5324:45
7:58
+0:12
20K
12.43 mi12:11:531:41:498:1228:16
9:06
+1:08
Half
13.11 mi12:18:071:48:038:156:14
9:08
+0:02
25K
15.53 mi12:43:182:13:148:3525:11
10:23
+1:15
30K
18.64 mi13:18:002:47:569:0134:42
11:10
+0:47
20M
20.00 mi13:34:293:04:259:1316:29
12:08
+0:58
21M
21.00 mi13:47:183:17:149:2412:49
12:49
+0:41
35K
21.75 mi13:54:513:24:479:257:33
10:06
-2:43
23M
23.00 mi14:09:273:39:239:3214:36
11:40
+1:34
24M
24.00 mi14:20:203:50:169:3610:53
10:53
-0:47
40K
24.85 mi14:30:274:00:239:4010:07
11:50
+0:57
25.2M
25.20 mi14:34:294:04:259:424:02
11:42
-0:08
Finish
26.22 mi14:44:204:14:169:429:51
9:40
-2:02

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

7:46 /mi

Average Pace

9:42 /mi

Slowest Pace

12:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:48:03

42% of race

Time at Steady Pace

1:28:10

35% of race

Time at Slower Pace

58:03

23% of race

Average Pace: 9:42 /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 mi10:54:4524:417:5724:41
7:57
#14217
10K
6.21 mi11:18:5248:487:5124:07
7:46
#13274
15K
9.32 mi11:43:371:13:337:5324:45
7:58
#13245
20K
12.43 mi12:11:531:41:498:1228:16
9:06
#14678
Half
13.11 mi12:18:071:48:038:156:14
9:08
#14938
25K
15.53 mi12:43:182:13:148:3525:11
10:23
#16190
30K
18.64 mi13:18:002:47:569:0134:42
11:10
#17401
20M
20.00 mi13:34:293:04:259:1316:29
12:08
#17980
21M
21.00 mi13:47:183:17:149:2412:49
12:49
#18222
35K
21.75 mi13:54:513:24:479:257:33
10:06
#18169
23M
23.00 mi14:09:273:39:239:3214:36
11:40
#18284
24M
24.00 mi14:20:203:50:169:3610:53
10:53
#18309
40K
24.85 mi14:30:274:00:239:4010:07
11:50
#18399
25.2M
25.20 mi14:34:294:04:259:424:02
11:42
#18341
Finish
26.22 mi14:44:204:14:169:429:51
9:40
#18268
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi142179731973113204(Top 52%)9263(Top 64%)9263(Top 479%)
10K6.21 mi3.10 mi13274+9439359+3729359+37212342(Top 48%)8943(Top 61%)8943(Top 462%)
15K9.32 mi3.11 mi13245+299327+329327+3213204(Top 52%)9263(Top 64%)9263(Top 479%)
20K12.43 mi3.11 mi14678-14339881-5549881-55417744(Top 69%)11147(Top 76%)11147(Top 576%)
Half13.11 mi0.68 mi14938-2609989-1089989-10818810(Top 74%)11540(Top 79%)11540(Top 596%)
25K15.53 mi2.42 mi16190-125210431-44210431-44220119(Top 79%)12084(Top 83%)12084(Top 624%)
30K18.64 mi3.11 mi17401-121110880-44910880-44920362(Top 80%)12027(Top 83%)12027(Top 622%)
20M20.00 mi1.36 mi17980-57911086-20611086-20621568(Top 84%)12475(Top 86%)12475(Top 645%)
21M21.00 mi1.00 mi18222-24211181-9511181-9520407(Top 80%)11833(Top 81%)11833(Top 612%)
35K21.75 mi0.75 mi18169+5311137+4411137+4417449(Top 68%)10346(Top 71%)10346(Top 535%)
23M23.00 mi1.25 mi18284-11511164-2711164-2720019(Top 78%)11572(Top 79%)11572(Top 598%)
24M24.00 mi1.00 mi18309-2511152+1211152+1218914(Top 74%)10963(Top 75%)10963(Top 567%)
40K24.85 mi0.85 mi18399-9011182-3011182-3020087(Top 79%)11471(Top 79%)11471(Top 593%)
25.2M25.20 mi0.35 mi18341+5811141+4111141+4116568(Top 65%)9722(Top 67%)9722(Top 502%)
Finish26.22 mi1.02 mi18268+7311075+6611075+6617201(Top 67%)10055(Top 69%)10055(Top 520%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21story building
+97ft-345ft

Overall

13204

Males

9263

M50-54

9263

5K→10K

3.1 - 6.2 mi

Top 48%
×5story building
+79ft-138ft

Overall

12342

Males

8943

M50-54

8943

10K→15K

6.2 - 9.3 mi

Top 52%
×3story building
+67ft-78ft

Overall

13204

Males

9263

M50-54

9263

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

17744

Males

11147

M50-54

11147

20K→Half

12.4 - 13.1 mi

Top 74%
×2story building
+19ft-37ft

Overall

18810

Males

11540

M50-54

11540

Half→25K

13.1 - 15.5 mi

Top 79%
×4story building
+66ft-88ft

Overall

20119

Males

12084

M50-54

12084

25K→30K

15.5 - 18.6 mi

Top 80%
×9story building
+181ft-148ft

Overall

20362

Males

12027

M50-54

12027

30K→20M

18.6 - 20.0 mi

Top 84%
×5story building
+64ft-50ft

Overall

21568

Males

12475

M50-54

12475

20M→21M

20.0 - 21.0 mi

Top 80%
×8story building
+106ft-24ft

Overall

20407

Males

11833

M50-54

11833

21M→35K

21.0 - 21.8 mi

Top 68%
×7story building
+17ft-86ft

Overall

17449

Males

10346

M50-54

10346

35K→23M

21.8 - 23.0 mi

Top 78%
×5story building
+23ft-63ft

Overall

20019

Males

11572

M50-54

11572

23M→24M

23.0 - 24.0 mi

Top 74%
×6story building
+12ft-82ft

Overall

18914

Males

10963

M50-54

10963

24M→40K

24.0 - 24.9 mi

Top 79%
×1story
+6ft-20ft

Overall

20087

Males

11471

M50-54

11471

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

16568

Males

9722

M50-54

9722

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2story building
+22ft-21ft

Overall

17201

Males

10055

M50-54

10055

Passing Analysis

Category:
Athletes Passed
1854
Passed By
5905
Net Change
-4051
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14217
5K10K98946+943#14217#13274
10K15K233204+29#13274#13245
15K20K411474-1433#13245#14678
20KHalf5265-260#14678#14938
Half25K471299-1252#14938#16190
25K30K411252-1211#16190#17401
30K20M35614-579#17401#17980
20M21M35277-242#17980#18222
21M35K8330+53#18222#18169
35K23M64179-115#18169#18284
23M24M6287-25#18284#18309
24M40K37127-90#18309#18399
40K25.2M7113+58#18399#18341
25.2MFinish11138+73#18341#18268
TOTALS18545905-4051
📊

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