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BOSTON MARATHON 2023

Kuang Chan Lee

Bib: 10965•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 47%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M45-49)
#0 / 2252
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:29
Rank: #7730
Start → 5K
22:29 | 7:14/mi
10K· 6.21 mi
45:09
Rank: #8218 (-488)
5K → 10K
22:40 | 7:18/mi
15K· 9.32 mi
1:08:21
Rank: #8712 (-494)
10K → 15K
23:12 | 7:28/mi
20K· 12.43 mi
1:32:14
Rank: #9164 (-452)
15K → 20K
23:53 | 7:41/mi
Half· 13.11 mi
1:37:27
Rank: #9286 (-122)
20K → Half
5:13 | 7:39/mi
25K· 15.53 mi
1:56:38
Rank: #9722 (-436)
Half → 25K
19:11 | 7:55/mi
30K· 18.64 mi
2:23:05
Rank: #10577 (-855)
25K → 30K
26:27 | 8:31/mi
20M
2:35:08
Rank: #10981 (-404)
30K → 20M
12:03 | 8:52/mi
21M
2:44:41
Rank: #11348 (-367)
20M → 21M
9:33 | 9:33/mi
35K· 21.75 mi
2:51:03
Rank: #11522 (-174)
21M → 35K
6:22 | 8:31/mi
23M
3:02:12
Rank: #11824 (-302)
35K → 23M
11:09 | 8:54/mi
24M
3:11:04
Rank: #12084 (-260)
23M → 24M
8:52 | 8:52/mi
40K· 24.85 mi
3:18:45
Rank: #12259 (-175)
24M → 40K
7:41 | 8:59/mi
25.2M
3:22:06
Rank: #12342 (-83)
40K → 25.2M
3:21 | 9:43/mi
Finish· 26.22 mi
3:31:08
Rank: #12579 (-237)
25.2M → Finish
9:02 | 8:52/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:27
Pace7:26 /mi
2nd Half
Distance13.11 mi
Time1:53:41
Pace8:40 /mi
📊Positive Split: 16.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:3122:297:1422:29
7:14
-
10K
6.21 mi11:11:1145:097:1622:40
7:18
+0:04
15K
9.32 mi11:34:231:08:217:2023:12
7:28
+0:10
20K
12.43 mi11:58:161:32:147:2523:53
7:41
+0:13
Half
13.11 mi12:03:291:37:277:265:13
7:39
-0:02
25K
15.53 mi12:22:401:56:387:3019:11
7:55
+0:16
30K
18.64 mi12:49:072:23:057:4126:27
8:31
+0:36
20M
20.00 mi13:01:102:35:087:4512:03
8:52
+0:21
21M
21.00 mi13:10:432:44:417:519:33
9:33
+0:41
35K
21.75 mi13:17:052:51:037:526:22
8:31
-1:02
23M
23.00 mi13:28:143:02:127:5511:09
8:54
+0:23
24M
24.00 mi13:37:063:11:047:588:52
8:52
-0:02
40K
24.85 mi13:44:473:18:458:007:41
8:59
+0:07
25.2M
25.20 mi13:48:083:22:068:013:21
9:43
+0:44
Finish
26.22 mi13:57:103:31:088:049:02
8:52
-0:51

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

7:14 /mi

Average Pace

8:04 /mi

Slowest Pace

9:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:56:38

55% of race

Time at Steady Pace

1:13:55

35% of race

Time at Slower Pace

20:35

10% of race

Average Pace: 8:03 /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 mi10:48:3122:297:1422:29
7:14
#7730
10K
6.21 mi11:11:1145:097:1622:40
7:18
#8218
15K
9.32 mi11:34:231:08:217:2023:12
7:28
#8712
20K
12.43 mi11:58:161:32:147:2523:53
7:41
#9164
Half
13.11 mi12:03:291:37:277:265:13
7:39
#9286
25K
15.53 mi12:22:401:56:387:3019:11
7:55
#9722
30K
18.64 mi12:49:072:23:057:4126:27
8:31
#10577
20M
20.00 mi13:01:102:35:087:4512:03
8:52
#10981
21M
21.00 mi13:10:432:44:417:519:33
9:33
#11348
35K
21.75 mi13:17:052:51:037:526:22
8:31
#11522
23M
23.00 mi13:28:143:02:127:5511:09
8:54
#11824
24M
24.00 mi13:37:063:11:047:588:52
8:52
#12084
40K
24.85 mi13:44:473:18:458:007:41
8:59
#12259
25.2M
25.20 mi13:48:083:22:068:013:21
9:43
#12342
Finish
26.22 mi13:57:103:31:088:049:02
8:52
#12579
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi7730680268029912(Top 37%)8102(Top 53%)8102(Top 360%)
10K6.21 mi3.10 mi8218-4887099-2977099-2978839(Top 33%)7485(Top 49%)7485(Top 332%)
15K9.32 mi3.11 mi8712-4947390-2917390-2919912(Top 37%)8102(Top 53%)8102(Top 360%)
20K12.43 mi3.11 mi9164-4527651-2617651-26110820(Top 41%)8486(Top 56%)8486(Top 377%)
Half13.11 mi0.68 mi9286-1227723-727723-7211375(Top 43%)8808(Top 58%)8808(Top 391%)
25K15.53 mi2.42 mi9722-4367976-2537976-25311999(Top 45%)8909(Top 59%)8909(Top 396%)
30K18.64 mi3.11 mi10577-8558371-3958371-39514391(Top 54%)9811(Top 65%)9811(Top 436%)
20M20.00 mi1.36 mi10981-4048544-1738544-17315795(Top 59%)10323(Top 68%)10323(Top 458%)
21M21.00 mi1.00 mi11348-3678687-1438687-14316174(Top 61%)10423(Top 69%)10423(Top 463%)
35K21.75 mi0.75 mi11522-1748747-608747-6015342(Top 58%)9995(Top 66%)9995(Top 444%)
23M23.00 mi1.25 mi11824-3028861-1148861-11415543(Top 58%)10045(Top 66%)10045(Top 446%)
24M24.00 mi1.00 mi12084-2608940-798940-7916542(Top 62%)10414(Top 69%)10414(Top 462%)
40K24.85 mi0.85 mi12259-1759008-689008-6816041(Top 60%)10138(Top 67%)10138(Top 450%)
25.2M25.20 mi0.35 mi12342-839033-259033-2516102(Top 60%)10146(Top 67%)10146(Top 451%)
Finish26.22 mi1.02 mi12579-2379108-759108-7517312(Top 65%)10743(Top 71%)10743(Top 477%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×21stories
+97ft-345ft

Overall

9912

Males

8102

M45-49

8102

5K→10K

3.1 - 6.2 mi

Top 33%
×5stories
+79ft-138ft

Overall

8839

Males

7485

M45-49

7485

10K→15K

6.2 - 9.3 mi

Top 37%
×3stories
+67ft-78ft

Overall

9912

Males

8102

M45-49

8102

15K→20K

9.3 - 12.4 mi

Top 41%
×5stories
+106ft-86ft

Overall

10820

Males

8486

M45-49

8486

20K→Half

12.4 - 13.1 mi

Top 43%
×2stories
+19ft-37ft

Overall

11375

Males

8808

M45-49

8808

Half→25K

13.1 - 15.5 mi

Top 45%
×4stories
+66ft-88ft

Overall

11999

Males

8909

M45-49

8909

25K→30K

15.5 - 18.6 mi

Top 54%
×9stories
+181ft-148ft

Overall

14391

Males

9811

M45-49

9811

30K→20M

18.6 - 20.0 mi

Top 59%
×5stories
+64ft-50ft

Overall

15795

Males

10323

M45-49

10323

20M→21M

20.0 - 21.0 mi

Top 61%
×8stories
+106ft-24ft

Overall

16174

Males

10423

M45-49

10423

21M→35K

21.0 - 21.8 mi

Top 58%
×7stories
+17ft-86ft

Overall

15342

Males

9995

M45-49

9995

35K→23M

21.8 - 23.0 mi

Top 58%
×5stories
+23ft-63ft

Overall

15543

Males

10045

M45-49

10045

23M→24M

23.0 - 24.0 mi

Top 62%
×6stories
+12ft-82ft

Overall

16542

Males

10414

M45-49

10414

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

16041

Males

10138

M45-49

10138

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

16102

Males

10146

M45-49

10146

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2stories
+22ft-21ft

Overall

17312

Males

10743

M45-49

10743

Passing Analysis

Category:
Athletes Passed
382*
Passed By
5230
Net Change
-4849
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7730
5K → 10K68556-488#7730#8218
10K → 15K37531-494#8218#8712
15K → 20K34486-452#8712#9164
20K → Half3125-122#9164#9286
Half → 25K40476-436#9286#9722
25K → 30K33887-855#9722#10577
30K → 20M22*426-404#10577#10981
20M → 21M22389-367#10981#11348
21M → 35K13187-174#11348#11522
35K → 23M36338-302#11522#11824
23M → 24M17277-260#11824#12084
24M → 40K24199-175#12084#12259
40K → 25.2M992-83#12259#12342
25.2M → Finish24261-237#12342#12579
TOTALS382*5230-4849

* 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