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BOSTON MARATHON 2023

Dennis Bao

Bib: 24823•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:09/mi
25:20
↑ 97↓ 3451.5%
10K· 6.21 mi
8:02/mi
50:17
↑ 79↓ 1380.4%
15K· 9.32 mi
7:58/mi
1:15:02
↑ 67↓ 78
20K· 12.43 mi
7:57/mi
1:39:45
↑ 106↓ 860.1%
Half· 13.11 mi
7:42/mi
1:45:00
↑ 19↓ 370.5%
25K· 15.53 mi
8:13/mi
2:04:55
↑ 66↓ 880.2%
30K· 18.64 mi
8:20/mi
2:30:49
↑ 181↓ 1480.2%
20M
8:30/mi
2:42:22
↑ 64↓ 500.2%
21M
9:12/mi
2:51:34
↑ 106↓ 241.6%
35K· 21.75 mi
8:55/mi
2:58:14
↑ 17↓ 861.7%
23M
9:29/mi
3:10:07
↑ 23↓ 630.6%
24M
10:01/mi
3:20:08
↓ 821.3%
40K· 24.85 mi
11:07/mi
3:29:38
↓ 200.3%
25.2M
12:14/mi
3:33:51
↑ 13↓ 160.2%
Finish· 26.22 mi
10:28/mi
3:44:31
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:00
Pace8:01 /mi
2nd Half
Distance13.11 mi
Time1:59:31
Pace9:07 /mi
📊Positive Split: 13.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:41:4725:208:0925:20
8:09
-
10K
6.21 mi12:06:4450:178:0624:57
8:02
-0:07
15K
9.32 mi12:31:291:15:028:0324:45
7:58
-0:04
20K
12.43 mi12:56:121:39:458:0224:43
7:57
-0:01
Half
13.11 mi13:01:271:45:008:015:15
7:42
-0:15
25K
15.53 mi13:21:222:04:558:0219:55
8:13
+0:31
30K
18.64 mi13:47:162:30:498:0525:54
8:20
+0:07
20M
20.00 mi13:58:492:42:228:0711:33
8:30
+0:10
21M
21.00 mi14:08:012:51:348:109:12
9:12
+0:42
35K
21.75 mi14:14:412:58:148:126:40
8:55
-0:17
23M
23.00 mi14:26:343:10:078:1611:53
9:29
+0:34
24M
24.00 mi14:36:353:20:088:2010:01
10:01
+0:32
40K
24.85 mi14:46:053:29:388:269:30
11:07
+1:06
25.2M
25.20 mi14:50:183:33:518:294:13
12:14
+1:07
Finish
26.22 mi15:00:583:44:318:3410:40
10:28
-1:46

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

7:42 /mi

Average Pace

8:34 /mi

Slowest Pace

12:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

5:15

2% of race

Time at Steady Pace

2:43:47

73% of race

Time at Slower Pace

55:29

25% of race

Average Pace: 8:34 /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 mi11:41:4725:208:0925:20
8:09
#15101
10K
6.21 mi12:06:4450:178:0624:57
8:02
#15054
15K
9.32 mi12:31:291:15:028:0324:45
7:58
#14750
20K
12.43 mi12:56:121:39:458:0224:43
7:57
#14293
Half
13.11 mi13:01:271:45:008:015:15
7:42
#14188
25K
15.53 mi13:21:222:04:558:0219:55
8:13
#14211
30K
18.64 mi13:47:162:30:498:0525:54
8:20
#14027
20M
20.00 mi13:58:492:42:228:0711:33
8:30
#13979
21M
21.00 mi14:08:012:51:348:109:12
9:12
#13983
35K
21.75 mi14:14:412:58:148:126:40
8:55
#14130
23M
23.00 mi14:26:343:10:078:1611:53
9:29
#14445
24M
24.00 mi14:36:353:20:088:2010:01
10:01
#14829
40K
24.85 mi14:46:053:29:388:269:30
11:07
#15355
25.2M
25.20 mi14:50:183:33:518:294:13
12:14
#15595
Finish
26.22 mi15:00:583:44:318:3410:40
10:28
#16055
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi15101103701037014105(Top 53%)9945(Top 66%)9945(Top 188%)
10K6.21 mi3.10 mi15054+4710356+1410356+1415017(Top 56%)10310(Top 68%)10310(Top 195%)
15K9.32 mi3.11 mi14750+30410226+13010226+13014105(Top 53%)9945(Top 66%)9945(Top 188%)
20K12.43 mi3.11 mi14293+45710023+20310023+20313072(Top 49%)9475(Top 62%)9475(Top 179%)
Half13.11 mi0.68 mi14188+1059978+459978+4511841(Top 44%)9026(Top 59%)9026(Top 171%)
25K15.53 mi2.42 mi14211-239957+219957+2114329(Top 54%)9909(Top 65%)9909(Top 187%)
30K18.64 mi3.11 mi14027+1849846+1119846+11113270(Top 50%)9356(Top 62%)9356(Top 177%)
20M20.00 mi1.36 mi13979+489811+359811+3513616(Top 51%)9420(Top 62%)9420(Top 178%)
21M21.00 mi1.00 mi13983-49792+199792+1914470(Top 54%)9710(Top 64%)9710(Top 184%)
35K21.75 mi0.75 mi14130-1479828-369828-3617471(Top 66%)10909(Top 72%)10909(Top 206%)
23M23.00 mi1.25 mi14445-3159930-1029930-10218285(Top 69%)11252(Top 74%)11252(Top 213%)
24M24.00 mi1.00 mi14829-38410063-13310063-13320808(Top 78%)12346(Top 81%)12346(Top 234%)
40K24.85 mi0.85 mi15355-52610240-17710240-17722562(Top 85%)13108(Top 86%)13108(Top 248%)
25.2M25.20 mi0.35 mi15595-24010325-8510325-8522845(Top 86%)13243(Top 87%)13243(Top 251%)
Finish26.22 mi1.02 mi16055-46010514-18910514-18922923(Top 86%)13283(Top 88%)13283(Top 251%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21story building
+97ft-345ft

Overall

14105

Males

9945

M18-39

9945

5K→10K

3.1 - 6.2 mi

Top 56%
×5story building
+79ft-138ft

Overall

15017

Males

10310

M18-39

10310

10K→15K

6.2 - 9.3 mi

Top 53%
×3story building
+67ft-78ft

Overall

14105

Males

9945

M18-39

9945

15K→20K

9.3 - 12.4 mi

Top 49%
×5story building
+106ft-86ft

Overall

13072

Males

9475

M18-39

9475

20K→Half

12.4 - 13.1 mi

Top 44%
×2story building
+19ft-37ft

Overall

11841

Males

9026

M18-39

9026

Half→25K

13.1 - 15.5 mi

Top 54%
×4story building
+66ft-88ft

Overall

14329

Males

9909

M18-39

9909

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

13270

Males

9356

M18-39

9356

30K→20M

18.6 - 20.0 mi

Top 51%
×5story building
+64ft-50ft

Overall

13616

Males

9420

M18-39

9420

20M→21M

20.0 - 21.0 mi

Top 54%
×8story building
+106ft-24ft

Overall

14470

Males

9710

M18-39

9710

21M→35K

21.0 - 21.8 mi

Top 66%
×7story building
+17ft-86ft

Overall

17471

Males

10909

M18-39

10909

35K→23M

21.8 - 23.0 mi

Top 69%
×5story building
+23ft-63ft

Overall

18285

Males

11252

M18-39

11252

23M→24M

23.0 - 24.0 mi

Top 78%
×6story building
+12ft-82ft

Overall

20808

Males

12346

M18-39

12346

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

22562

Males

13108

M18-39

13108

40K→25.2M

24.9 - 25.2 mi

Top 86%
×1story
+13ft-16ft

Overall

22845

Males

13243

M18-39

13243

25.2M→Finish

25.2 - 26.2 mi

Top 86%
×2story building
+22ft-21ft

Overall

22923

Males

13283

M18-39

13283

Passing Analysis

Category:
Athletes Passed
1993
Passed By
2947
Net Change
-954
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15101
5K → 10K323276+47#15101#15054
10K → 15K36561+304#15054#14750
15K → 20K48528+457#14750#14293
20K → Half1061+105#14293#14188
Half → 25K139162-23#14188#14211
25K → 30K28399+184#14211#14027
30K → 20M11971+48#14027#13979
20M → 21M9296-4#13979#13983
21M → 35K17164-147#13983#14130
35K → 23M25340-315#14130#14445
23M → 24M17401-384#14445#14829
24M → 40K8534-526#14829#15355
40K → 25.2M4244-240#15355#15595
25.2M → Finish10470-460#15595#16055
TOTALS19932947-954
📊

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