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BOSTON MARATHON 2023

Daniel Singer

Bib: 11724•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 24%
Gender (Male)
#0 / 15176
Top 37%
Masters (Masters Men)
#0 / 9891
Top 23%
Division (M45-49)
#0 / 2252
Top 30%
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
7:35/mi
23:33
↑ 97↓ 3451.5%
10K· 6.21 mi
7:14/mi
46:02
↑ 79↓ 1380.4%
15K· 9.32 mi
7:16/mi
1:08:37
↑ 67↓ 78
20K· 12.43 mi
7:15/mi
1:31:10
↑ 106↓ 860.1%
Half· 13.11 mi
7:01/mi
1:35:57
↑ 19↓ 370.5%
25K· 15.53 mi
7:13/mi
1:53:27
↑ 66↓ 880.2%
30K· 18.64 mi
7:24/mi
2:16:27
↑ 181↓ 1480.2%
20M
7:19/mi
2:26:24
↑ 64↓ 500.2%
21M
7:28/mi
2:33:52
↑ 106↓ 241.6%
35K· 21.75 mi
7:00/mi
2:39:06
↑ 17↓ 861.7%
23M
7:03/mi
2:47:56
↑ 23↓ 630.6%
24M
6:51/mi
2:54:47
↓ 821.3%
40K· 24.85 mi
6:55/mi
3:00:42
↓ 200.3%
25.2M
7:09/mi
3:03:10
↑ 13↓ 160.2%
Finish· 26.22 mi
6:30/mi
3:09:47
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:35:57
Pace7:19 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:33:50
Pace7:09 /mi
📊Negative Split: 2.2% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:3923:337:3523:33
7:35
-
10K
6.21 mi11:13:0846:027:2522:29
7:14
-0:21
15K
9.32 mi11:35:431:08:377:2222:35
7:16
+0:02
20K
12.43 mi11:58:161:31:107:2022:33
7:15
-0:01
Half
13.11 mi12:03:031:35:577:194:47
7:01
-0:14
25K
15.53 mi12:20:331:53:277:1817:30
7:13
+0:12
30K
18.64 mi12:43:332:16:277:1923:00
7:24
+0:11
20M
20.00 mi12:53:302:26:247:199:57
7:19
-0:05
21M
21.00 mi13:00:582:33:527:207:28
7:28
+0:09
35K
21.75 mi13:06:122:39:067:195:14
7:00
-0:28
23M
23.00 mi13:15:022:47:567:188:50
7:03
+0:03
24M
24.00 mi13:21:532:54:477:176:51
6:51
-0:12
40K
24.85 mi13:27:483:00:427:165:55
6:55
+0:04
25.2M
25.20 mi13:30:163:03:107:162:28
7:09
+0:14
Finish
26.22 mi13:36:533:09:477:156:37
6:30
-0:39

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

6:30 /mi

Average Pace

7:15 /mi

Slowest Pace

7:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

38:14

20% of race

Time at Steady Pace

2:31:33

80% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:14 /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 mi10:50:3923:337:3523:33
7:35
#10323
10K
6.21 mi11:13:0846:027:2522:29
7:14
#9229
15K
9.32 mi11:35:431:08:377:2222:35
7:16
#8919
20K
12.43 mi11:58:161:31:107:2022:33
7:15
#8513
Half
13.11 mi12:03:031:35:577:194:47
7:01
#8395
25K
15.53 mi12:20:331:53:277:1817:30
7:13
#8091
30K
18.64 mi12:43:332:16:277:1923:00
7:24
#7774
20M
20.00 mi12:53:302:26:247:199:57
7:19
#7578
21M
21.00 mi13:00:582:33:527:207:28
7:28
#7373
35K
21.75 mi13:06:122:39:067:195:14
7:00
#7271
23M
23.00 mi13:15:022:47:567:188:50
7:03
#7006
24M
24.00 mi13:21:532:54:477:176:51
6:51
#6830
40K
24.85 mi13:27:483:00:427:165:55
6:55
#6657
25.2M
25.20 mi13:30:163:03:107:162:28
7:09
#6560
Finish
26.22 mi13:36:533:09:477:156:37
6:30
#6375
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi10323830083008284(Top 31%)7097(Top 47%)7097(Top 315%)
10K6.21 mi3.10 mi9229+10947706+5947706+5948364(Top 31%)7174(Top 47%)7174(Top 319%)
15K9.32 mi3.11 mi8919+3107509+1977509+1978284(Top 31%)7097(Top 47%)7097(Top 315%)
20K12.43 mi3.11 mi8513+4067260+2497260+2497476(Top 28%)6541(Top 43%)6541(Top 290%)
Half13.11 mi0.68 mi8395+1187186+747186+746580(Top 25%)5920(Top 39%)5920(Top 263%)
25K15.53 mi2.42 mi8091+3046969+2176969+2176764(Top 25%)5981(Top 39%)5981(Top 266%)
30K18.64 mi3.11 mi7774+3176733+2366733+2366611(Top 25%)5807(Top 38%)5807(Top 258%)
20M20.00 mi1.36 mi7578+1966582+1516582+1515758(Top 22%)5118(Top 34%)5118(Top 227%)
21M21.00 mi1.00 mi7373+2056435+1476435+1474436(Top 17%)4050(Top 27%)4050(Top 180%)
35K21.75 mi0.75 mi7271+1026358+776358+775326(Top 20%)4754(Top 31%)4754(Top 211%)
23M23.00 mi1.25 mi7006+2656152+2066152+2064082(Top 15%)3758(Top 25%)3758(Top 167%)
24M24.00 mi1.00 mi6830+1766016+1366016+1363956(Top 15%)3615(Top 24%)3615(Top 161%)
40K24.85 mi0.85 mi6657+1735877+1395877+1393457(Top 13%)3158(Top 21%)3158(Top 140%)
25.2M25.20 mi0.35 mi6560+975801+765801+762393(Top 9%)2226(Top 15%)2226(Top 99%)
Finish26.22 mi1.02 mi6375+1855669+1325669+1322474(Top 9%)2282(Top 15%)2282(Top 101%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21story building
+97ft-345ft

Overall

8284

Males

7097

M45-49

7097

5K→10K

3.1 - 6.2 mi

Top 31%
×5story building
+79ft-138ft

Overall

8364

Males

7174

M45-49

7174

10K→15K

6.2 - 9.3 mi

Top 31%
×3story building
+67ft-78ft

Overall

8284

Males

7097

M45-49

7097

15K→20K

9.3 - 12.4 mi

Top 28%
×5story building
+106ft-86ft

Overall

7476

Males

6541

M45-49

6541

20K→Half

12.4 - 13.1 mi

Top 25%
×2story building
+19ft-37ft

Overall

6580

Males

5920

M45-49

5920

Half→25K

13.1 - 15.5 mi

Top 25%
×4story building
+66ft-88ft

Overall

6764

Males

5981

M45-49

5981

25K→30K

15.5 - 18.6 mi

Top 25%
×9story building
+181ft-148ft

Overall

6611

Males

5807

M45-49

5807

30K→20M

18.6 - 20.0 mi

Top 22%
×5story building
+64ft-50ft

Overall

5758

Males

5118

M45-49

5118

20M→21M

20.0 - 21.0 mi

Top 17%
×8story building
+106ft-24ft

Overall

4436

Males

4050

M45-49

4050

21M→35K

21.0 - 21.8 mi

Top 20%
×7story building
+17ft-86ft

Overall

5326

Males

4754

M45-49

4754

35K→23M

21.8 - 23.0 mi

Top 15%
×5story building
+23ft-63ft

Overall

4082

Males

3758

M45-49

3758

23M→24M

23.0 - 24.0 mi

Top 15%
×6story building
+12ft-82ft

Overall

3956

Males

3615

M45-49

3615

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3457

Males

3158

M45-49

3158

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2393

Males

2226

M45-49

2226

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2story building
+22ft-21ft

Overall

2474

Males

2282

M45-49

2282

Passing Analysis

Category:
Athletes Passed
4077*
Passed By
129
Net Change
+3948
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10323
5K → 10K1125*31+1094#10323#9229
10K → 15K34838+310#9229#8919
15K → 20K4148+406#8919#8513
20K → Half1180+118#8513#8395
Half → 25K31612+304#8395#8091
25K → 30K33518+317#8091#7774
30K → 20M2004+196#7774#7578
20M → 21M2094+205#7578#7373
21M → 35K1086+102#7373#7271
35K → 23M2683+265#7271#7006
23M → 24M1771+176#7006#6830
24M → 40K1741+173#6830#6657
40K → 25.2M981+97#6657#6560
25.2M → Finish1872+185#6560#6375
TOTALS4077*129+3948

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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