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BOSTON MARATHON 2023

Henry To

Bib: 2052•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 8%
Gender (Male)
#0 / 15176
Top 14%
Masters (Masters Men)
#0 / 9891
Top 4%
Division (M40-44)
#0 / 2241
Top 13%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:24
Rank: #2642
Start → 5K
20:24 | 6:34/mi
10K· 6.21 mi
40:37
Rank: #2704 (-62)
5K → 10K
20:13 | 6:30/mi
15K· 9.32 mi
1:00:58
Rank: #2767 (-63)
10K → 15K
20:21 | 6:33/mi
20K· 12.43 mi
1:21:22
Rank: #2710 (+57)
15K → 20K
20:24 | 6:34/mi
Half· 13.11 mi
1:25:51
Rank: #2732 (-22)
20K → Half
4:29 | 6:34/mi
25K· 15.53 mi
1:41:46
Rank: #2686 (+46)
Half → 25K
15:55 | 6:34/mi
30K· 18.64 mi
2:02:40
Rank: #2636 (+50)
25K → 30K
20:54 | 6:44/mi
20M
2:11:37
Rank: #2544 (+92)
30K → 20M
8:57 | 6:35/mi
21M
2:18:18
Rank: #2407 (+137)
20M → 21M
6:41 | 6:41/mi
35K· 21.75 mi
2:22:55
Rank: #2341 (+66)
21M → 35K
4:37 | 6:10/mi
23M
2:30:59
Rank: #2248 (+93)
35K → 23M
8:04 | 6:27/mi
24M
2:37:15
Rank: #2175 (+73)
23M → 24M
6:16 | 6:16/mi
40K· 24.85 mi
2:42:51
Rank: #2136 (+39)
24M → 40K
5:36 | 6:33/mi
25.2M
2:45:26
Rank: #2153 (-17)
40K → 25.2M
2:35 | 7:29/mi
Finish· 26.22 mi
2:52:21
Rank: #2170 (-17)
25.2M → Finish
6:55 | 6:47/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:25:51
Pace6:33 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:26:30
Pace6:36 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:1420:246:3420:24
6:34
-
10K
6.21 mi10:41:2740:376:3220:13
6:30
-0:04
15K
9.32 mi11:01:481:00:586:3220:21
6:33
+0:03
20K
12.43 mi11:22:121:21:226:3320:24
6:34
+0:01
Half
13.11 mi11:26:411:25:516:334:29
6:34
0:00
25K
15.53 mi11:42:361:41:466:3315:55
6:34
0:00
30K
18.64 mi12:03:302:02:406:3520:54
6:44
+0:10
20M
20.00 mi12:12:272:11:376:358:57
6:35
-0:09
21M
21.00 mi12:19:082:18:186:356:41
6:41
+0:06
35K
21.75 mi12:23:452:22:556:344:37
6:10
-0:31
23M
23.00 mi12:31:492:30:596:348:04
6:27
+0:17
24M
24.00 mi12:38:052:37:156:336:16
6:16
-0:11
40K
24.85 mi12:43:412:42:516:335:36
6:33
+0:17
25.2M
25.20 mi12:46:162:45:266:342:35
7:29
+0:56
Finish
26.22 mi12:53:112:52:216:356:55
6:47
-0:42

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

6:10 /mi

Average Pace

6:35 /mi

Slowest Pace

7:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

10:53

6% of race

Time at Steady Pace

2:11:04

76% of race

Time at Slower Pace

30:24

18% of race

Average Pace: 6:34 /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 mi10:21:1420:246:3420:24
6:34
#2642
10K
6.21 mi10:41:2740:376:3220:13
6:30
#2704
15K
9.32 mi11:01:481:00:586:3220:21
6:33
#2767
20K
12.43 mi11:22:121:21:226:3320:24
6:34
#2710
Half
13.11 mi11:26:411:25:516:334:29
6:34
#2732
25K
15.53 mi11:42:361:41:466:3315:55
6:34
#2686
30K
18.64 mi12:03:302:02:406:3520:54
6:44
#2636
20M
20.00 mi12:12:272:11:376:358:57
6:35
#2544
21M
21.00 mi12:19:082:18:186:356:41
6:41
#2407
35K
21.75 mi12:23:452:22:556:344:37
6:10
#2341
23M
23.00 mi12:31:492:30:596:348:04
6:27
#2248
24M
24.00 mi12:38:052:37:156:336:16
6:16
#2175
40K
24.85 mi12:43:412:42:516:335:36
6:33
#2136
25.2M
25.20 mi12:46:162:45:266:342:35
7:29
#2153
Finish
26.22 mi12:53:112:52:216:356:55
6:47
#2170
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi2642251625162916(Top 11%)2787(Top 18%)2787(Top 124%)
10K6.21 mi3.10 mi2704-622580-642580-642825(Top 11%)2699(Top 18%)2699(Top 120%)
15K9.32 mi3.11 mi2767-632642-622642-622916(Top 11%)2787(Top 18%)2787(Top 124%)
20K12.43 mi3.11 mi2710+572589+532589+532638(Top 10%)2522(Top 17%)2522(Top 113%)
Half13.11 mi0.68 mi2732-222611-222611-223165(Top 12%)3015(Top 20%)3015(Top 135%)
25K15.53 mi2.42 mi2686+462566+452566+452504(Top 9%)2395(Top 16%)2395(Top 107%)
30K18.64 mi3.11 mi2636+502517+492517+492537(Top 10%)2412(Top 16%)2412(Top 108%)
20M20.00 mi1.36 mi2544+922433+842433+841806(Top 7%)1722(Top 11%)1722(Top 77%)
21M21.00 mi1.00 mi2407+1372306+1272306+1271059(Top 4%)1010(Top 7%)1010(Top 45%)
35K21.75 mi0.75 mi2341+662242+642242+641182(Top 4%)1126(Top 7%)1126(Top 50%)
23M23.00 mi1.25 mi2248+932153+892153+891256(Top 5%)1187(Top 8%)1187(Top 53%)
24M24.00 mi1.00 mi2175+732087+662087+661270(Top 5%)1204(Top 8%)1204(Top 54%)
40K24.85 mi0.85 mi2136+392050+372050+371734(Top 7%)1632(Top 11%)1632(Top 73%)
25.2M25.20 mi0.35 mi2153-172066-162066-163764(Top 14%)3354(Top 22%)3354(Top 150%)
Finish26.22 mi1.02 mi2170-172081-152081-153968(Top 15%)3507(Top 23%)3507(Top 156%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21stories
+97ft-345ft

Overall

2916

Males

2787

M40-44

2787

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

2825

Males

2699

M40-44

2699

10K→15K

6.2 - 9.3 mi

Top 11%
×3stories
+67ft-78ft

Overall

2916

Males

2787

M40-44

2787

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2638

Males

2522

M40-44

2522

20K→Half

12.4 - 13.1 mi

Top 12%
×2stories
+19ft-37ft

Overall

3165

Males

3015

M40-44

3015

Half→25K

13.1 - 15.5 mi

Top 9%
×4stories
+66ft-88ft

Overall

2504

Males

2395

M40-44

2395

25K→30K

15.5 - 18.6 mi

Top 10%
×9stories
+181ft-148ft

Overall

2537

Males

2412

M40-44

2412

30K→20M

18.6 - 20.0 mi

Top 7%
×5stories
+64ft-50ft

Overall

1806

Males

1722

M40-44

1722

20M→21M

20.0 - 21.0 mi

Top 4%
×8stories
+106ft-24ft

Overall

1059

Males

1010

M40-44

1010

21M→35K

21.0 - 21.8 mi

Top 4%
×7stories
+17ft-86ft

Overall

1182

Males

1126

M40-44

1126

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1256

Males

1187

M40-44

1187

23M→24M

23.0 - 24.0 mi

Top 5%
×6stories
+12ft-82ft

Overall

1270

Males

1204

M40-44

1204

24M→40K

24.0 - 24.9 mi

Top 7%
×1story
+6ft-20ft

Overall

1734

Males

1632

M40-44

1632

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3764

Males

3354

M40-44

3354

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2stories
+22ft-21ft

Overall

3968

Males

3507

M40-44

3507

Passing Analysis

Category:
Athletes Passed
1007
Passed By
535
Net Change
+472
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2642
5K → 10K123185-62#2642#2704
10K → 15K55118-63#2704#2767
15K → 20K10144+57#2767#2710
20K → Half1335-22#2710#2732
Half → 25K7024+46#2732#2686
25K → 30K9848+50#2686#2636
30K → 20M975+92#2636#2544
20M → 21M1370+137#2544#2407
21M → 35K671+66#2407#2341
35K → 23M930+93#2341#2248
23M → 24M752+73#2248#2175
24M → 40K5011+39#2175#2136
40K → 25.2M825-17#2136#2153
25.2M → Finish2037-17#2153#2170
TOTALS1007535+472
📊

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