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BOSTON MARATHON 2023

Chris Leung

Bib: 27340•M

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
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
32:43
Rank: #24776
Start → 5K
32:43 | 10:32/mi
10K· 6.21 mi
1:05:56
Rank: #24928 (-152)
5K → 10K
33:13 | 10:41/mi
15K· 9.32 mi
1:40:27
Rank: #25104 (-176)
10K → 15K
34:31 | 11:07/mi
20K· 12.43 mi
2:13:16
Rank: #24802 (+302)
15K → 20K
32:49 | 10:34/mi
Half· 13.11 mi
2:20:18
Rank: #24759 (+43)
20K → Half
7:02 | 10:19/mi
25K· 15.53 mi
2:46:11
Rank: #24556 (+203)
Half → 25K
25:53 | 10:41/mi
30K· 18.64 mi
3:20:20
Rank: #24252 (+304)
25K → 30K
34:09 | 11:00/mi
20M
3:34:34
Rank: #24081 (+171)
30K → 20M
14:14 | 10:28/mi
21M
3:45:14
Rank: #23905 (+176)
20M → 21M
10:40 | 10:40/mi
35K· 21.75 mi
3:52:28
Rank: #23806 (+99)
21M → 35K
7:14 | 9:40/mi
23M
4:04:33
Rank: #23595 (+211)
35K → 23M
12:05 | 9:39/mi
24M
4:14:04
Rank: #23469 (+126)
23M → 24M
9:31 | 9:31/mi
40K· 24.85 mi
4:22:43
Rank: #23362 (+107)
24M → 40K
8:39 | 10:07/mi
25.2M
4:26:17
Rank: #23298 (+64)
40K → 25.2M
3:34 | 10:21/mi
Finish· 26.22 mi
4:35:21
Rank: #23154 (+144)
25.2M → Finish
9:04 | 8:54/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time2:20:18
Pace10:42 /mi
2nd Half✓ Faster
Distance13.11 mi
Time2:15:03
Pace10:18 /mi
📊Negative Split: 3.7% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:5632:4310:3232:43
10:32
-
10K
6.21 mi12:23:091:05:5610:3733:13
10:41
+0:09
15K
9.32 mi12:57:401:40:2710:4734:31
11:07
+0:26
20K
12.43 mi13:30:292:13:1610:4332:49
10:34
-0:33
Half
13.11 mi13:37:312:20:1810:427:02
10:19
-0:15
25K
15.53 mi14:03:242:46:1110:4225:53
10:41
+0:22
30K
18.64 mi14:37:333:20:2010:4534:09
11:00
+0:19
20M
20.00 mi14:51:473:34:3410:4414:14
10:28
-0:32
21M
21.00 mi15:02:273:45:1410:4410:40
10:40
+0:12
35K
21.75 mi15:09:413:52:2810:417:14
9:40
-1:00
23M
23.00 mi15:21:464:04:3310:3812:05
9:39
-0:01
24M
24.00 mi15:31:174:14:0410:359:31
9:31
-0:08
40K
24.85 mi15:39:564:22:4310:348:39
10:07
+0:36
25.2M
25.20 mi15:43:304:26:1710:343:34
10:21
+0:14
Finish
26.22 mi15:52:344:35:2110:319:04
8:54
-1:27

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

8:54 /mi

Average Pace

10:31 /mi

Slowest Pace

11:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

46:33

17% of race

Time at Steady Pace

2:40:08

58% of race

Time at Slower Pace

1:08:40

25% of race

Average Pace: 10:30 /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 mi11:49:5632:4310:3232:43
10:32
#24776
10K
6.21 mi12:23:091:05:5610:3733:13
10:41
#24928
15K
9.32 mi12:57:401:40:2710:4734:31
11:07
#25104
20K
12.43 mi13:30:292:13:1610:4332:49
10:34
#24802
Half
13.11 mi13:37:312:20:1810:427:02
10:19
#24759
25K
15.53 mi14:03:242:46:1110:4225:53
10:41
#24556
30K
18.64 mi14:37:333:20:2010:4534:09
11:00
#24252
20M
20.00 mi14:51:473:34:3410:4414:14
10:28
#24081
21M
21.00 mi15:02:273:45:1410:4410:40
10:40
#23905
35K
21.75 mi15:09:413:52:2810:417:14
9:40
#23806
23M
23.00 mi15:21:464:04:3310:3812:05
9:39
#23595
24M
24.00 mi15:31:174:14:0410:359:31
9:31
#23469
40K
24.85 mi15:39:564:22:4310:348:39
10:07
#23362
25.2M
25.20 mi15:43:304:26:1710:343:34
10:21
#23298
Finish
26.22 mi15:52:344:35:2110:319:04
8:54
#23154
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi24776144361443625315(Top 95%)14654(Top 97%)14654(Top 651%)
10K6.21 mi3.10 mi24928-15214511-7514511-7525003(Top 94%)14538(Top 96%)14538(Top 646%)
15K9.32 mi3.11 mi25104-17614586-7514586-7525315(Top 95%)14654(Top 97%)14654(Top 651%)
20K12.43 mi3.11 mi24802+30214437+14914437+14923943(Top 90%)14051(Top 93%)14051(Top 624%)
Half13.11 mi0.68 mi24759+4314413+2414413+2423854(Top 90%)13994(Top 92%)13994(Top 621%)
25K15.53 mi2.42 mi24556+20314313+10014313+10023473(Top 88%)13797(Top 91%)13797(Top 613%)
30K18.64 mi3.11 mi24252+30414157+15614157+15623085(Top 87%)13562(Top 89%)13562(Top 602%)
20M20.00 mi1.36 mi24081+17114076+8114076+8121674(Top 81%)12861(Top 85%)12861(Top 571%)
21M21.00 mi1.00 mi23905+17613997+7913997+7920060(Top 75%)12081(Top 80%)12081(Top 536%)
35K21.75 mi0.75 mi23806+9913950+4713950+4720372(Top 77%)12204(Top 80%)12204(Top 542%)
23M23.00 mi1.25 mi23595+21113851+9913851+9918910(Top 71%)11535(Top 76%)11535(Top 512%)
24M24.00 mi1.00 mi23469+12613776+7513776+7519274(Top 72%)11653(Top 77%)11653(Top 517%)
40K24.85 mi0.85 mi23362+10713711+6513711+6520280(Top 76%)12055(Top 79%)12055(Top 535%)
25.2M25.20 mi0.35 mi23298+6413675+3613675+3618606(Top 70%)11315(Top 75%)11315(Top 502%)
Finish26.22 mi1.02 mi23154+14413605+7013605+7017480(Top 66%)10828(Top 71%)10828(Top 481%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 95%
×21stories
+97ft-345ft

Overall

25315

Males

14654

M45-49

14654

5K→10K

3.1 - 6.2 mi

Top 94%
×5stories
+79ft-138ft

Overall

25003

Males

14538

M45-49

14538

10K→15K

6.2 - 9.3 mi

Top 95%
×3stories
+67ft-78ft

Overall

25315

Males

14654

M45-49

14654

15K→20K

9.3 - 12.4 mi

Top 90%
×5stories
+106ft-86ft

Overall

23943

Males

14051

M45-49

14051

20K→Half

12.4 - 13.1 mi

Top 90%
×2stories
+19ft-37ft

Overall

23854

Males

13994

M45-49

13994

Half→25K

13.1 - 15.5 mi

Top 88%
×4stories
+66ft-88ft

Overall

23473

Males

13797

M45-49

13797

25K→30K

15.5 - 18.6 mi

Top 87%
×9stories
+181ft-148ft

Overall

23085

Males

13562

M45-49

13562

30K→20M

18.6 - 20.0 mi

Top 81%
×5stories
+64ft-50ft

Overall

21674

Males

12861

M45-49

12861

20M→21M

20.0 - 21.0 mi

Top 75%
×8stories
+106ft-24ft

Overall

20060

Males

12081

M45-49

12081

21M→35K

21.0 - 21.8 mi

Top 77%
×7stories
+17ft-86ft

Overall

20372

Males

12204

M45-49

12204

35K→23M

21.8 - 23.0 mi

Top 71%
×5stories
+23ft-63ft

Overall

18910

Males

11535

M45-49

11535

23M→24M

23.0 - 24.0 mi

Top 72%
×6stories
+12ft-82ft

Overall

19274

Males

11653

M45-49

11653

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20280

Males

12055

M45-49

12055

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

18606

Males

11315

M45-49

11315

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2stories
+22ft-21ft

Overall

17480

Males

10828

M45-49

10828

Passing Analysis

Category:
Athletes Passed
2158
Passed By
536
Net Change
+1622
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24776
5K → 10K123275-152#24776#24928
10K → 15K49225-176#24928#25104
15K → 20K31210+302#25104#24802
20K → Half485+43#24802#24759
Half → 25K2063+203#24759#24556
25K → 30K31511+304#24556#24252
30K → 20M1754+171#24252#24081
20M → 21M1760+176#24081#23905
21M → 35K990+99#23905#23806
35K → 23M2121+211#23806#23595
23M → 24M1282+126#23595#23469
24M → 40K1070+107#23469#23362
40K → 25.2M640+64#23362#23298
25.2M → Finish1440+144#23298#23154
TOTALS2158536+1622
📊

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