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BOSTON MARATHON 2023

Alex Dunbar

Bib: 1601•M

GA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 8%
Gender (Male)
#0 / 15176
Top 13%
Division (M18-39)
#0 / 5285
Top 29%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:25
Rank: #2671
Start → 5K
20:25 | 6:34/mi
10K· 6.21 mi
40:01
Rank: #2185 (+486)
5K → 10K
19:36 | 6:19/mi
15K· 9.32 mi
59:40
Rank: #2007 (+178)
10K → 15K
19:39 | 6:19/mi
20K· 12.43 mi
1:19:36
Rank: #1961 (+46)
15K → 20K
19:56 | 6:25/mi
Half· 13.11 mi
1:23:56
Rank: #1957 (+4)
20K → Half
4:20 | 6:21/mi
25K· 15.53 mi
1:40:38
Rank: #2297 (-340)
Half → 25K
16:42 | 6:53/mi
30K· 18.64 mi
2:01:05
Rank: #2211 (+86)
25K → 30K
20:27 | 6:35/mi
20M
2:10:01
Rank: #2142 (+69)
30K → 20M
8:56 | 6:34/mi
21M
2:16:51
Rank: #2085 (+57)
20M → 21M
6:50 | 6:50/mi
35K· 21.75 mi
2:21:34
Rank: #2056 (+29)
21M → 35K
4:43 | 6:18/mi
23M
2:29:58
Rank: #2033 (+23)
35K → 23M
8:24 | 6:43/mi
24M
2:36:29
Rank: #2019 (+14)
23M → 24M
6:31 | 6:31/mi
40K· 24.85 mi
2:42:20
Rank: #2030 (-11)
24M → 40K
5:51 | 6:51/mi
25.2M
2:44:51
Rank: #2029 (+1)
40K → 25.2M
2:31 | 7:18/mi
Finish· 26.22 mi
2:51:33
Rank: #2023 (+6)
25.2M → Finish
6:42 | 6:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:56
Pace6:24 /mi
2nd Half
Distance13.11 mi
Time1:27:37
Pace6:41 /mi
📊Positive Split: 4.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:4620:256:3420:25
6:34
-
10K
6.21 mi10:40:2240:016:2619:36
6:19
-0:15
15K
9.32 mi11:00:0159:406:2419:39
6:19
0:00
20K
12.43 mi11:19:571:19:366:2419:56
6:25
+0:06
Half
13.11 mi11:24:171:23:566:244:20
6:21
-0:04
25K
15.53 mi11:40:591:40:386:2916:42
6:53
+0:32
30K
18.64 mi12:01:262:01:056:3020:27
6:35
-0:18
20M
20.00 mi12:10:222:10:016:308:56
6:34
-0:01
21M
21.00 mi12:17:122:16:516:316:50
6:50
+0:16
35K
21.75 mi12:21:552:21:346:314:43
6:18
-0:32
23M
23.00 mi12:30:192:29:586:318:24
6:43
+0:25
24M
24.00 mi12:36:502:36:296:316:31
6:31
-0:12
40K
24.85 mi12:42:412:42:206:325:51
6:51
+0:20
25.2M
25.20 mi12:45:122:44:516:332:31
7:18
+0:27
Finish
26.22 mi12:51:542:51:336:336:42
6:34
-0:44

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

6:18 /mi

Average Pace

6:33 /mi

Slowest Pace

7:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:49:02

99% of race

Time at Steady Pace

2:31

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:33 /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 mi10:20:4620:256:3420:25
6:34
#2671
10K
6.21 mi10:40:2240:016:2619:36
6:19
#2185
15K
9.32 mi11:00:0159:406:2419:39
6:19
#2007
20K
12.43 mi11:19:571:19:366:2419:56
6:25
#1961
Half
13.11 mi11:24:171:23:566:244:20
6:21
#1957
25K
15.53 mi11:40:591:40:386:2916:42
6:53
#2297
30K
18.64 mi12:01:262:01:056:3020:27
6:35
#2211
20M
20.00 mi12:10:222:10:016:308:56
6:34
#2142
21M
21.00 mi12:17:122:16:516:316:50
6:50
#2085
35K
21.75 mi12:21:552:21:346:314:43
6:18
#2056
23M
23.00 mi12:30:192:29:586:318:24
6:43
#2033
24M
24.00 mi12:36:502:36:296:316:31
6:31
#2019
40K
24.85 mi12:42:412:42:206:325:51
6:51
#2030
25.2M
25.20 mi12:45:122:44:516:332:31
7:18
#2029
Finish
26.22 mi12:51:542:51:336:336:42
6:34
#2023
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2671254325431762(Top 7%)1688(Top 11%)1688(Top 32%)
10K6.21 mi3.10 mi2185+4862092+4512092+4511810(Top 7%)1731(Top 11%)1731(Top 33%)
15K9.32 mi3.11 mi2007+1781922+1701922+1701762(Top 7%)1688(Top 11%)1688(Top 32%)
20K12.43 mi3.11 mi1961+461878+441878+441867(Top 7%)1790(Top 12%)1790(Top 34%)
Half13.11 mi0.68 mi1957+41873+51873+52000(Top 8%)1923(Top 13%)1923(Top 36%)
25K15.53 mi2.42 mi2297-3402202-3292202-3294844(Top 18%)4483(Top 30%)4483(Top 85%)
30K18.64 mi3.11 mi2211+862121+812121+811888(Top 7%)1807(Top 12%)1807(Top 34%)
20M20.00 mi1.36 mi2142+692053+682053+681737(Top 7%)1657(Top 11%)1657(Top 31%)
21M21.00 mi1.00 mi2085+571998+551998+551527(Top 6%)1456(Top 10%)1456(Top 28%)
35K21.75 mi0.75 mi2056+291972+261972+261604(Top 6%)1524(Top 10%)1524(Top 29%)
23M23.00 mi1.25 mi2033+231949+231949+232204(Top 8%)2077(Top 14%)2077(Top 39%)
24M24.00 mi1.00 mi2019+141935+141935+142157(Top 8%)2023(Top 13%)2023(Top 38%)
40K24.85 mi0.85 mi2030-111946-111946-112998(Top 11%)2756(Top 18%)2756(Top 52%)
25.2M25.20 mi0.35 mi2029+11945+11945+12873(Top 11%)2628(Top 17%)2628(Top 50%)
Finish26.22 mi1.02 mi2023+61939+61939+62835(Top 11%)2572(Top 17%)2572(Top 49%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×21stories
+97ft-345ft

Overall

1762

Males

1688

M18-39

1688

5K→10K

3.1 - 6.2 mi

Top 7%
×5stories
+79ft-138ft

Overall

1810

Males

1731

M18-39

1731

10K→15K

6.2 - 9.3 mi

Top 7%
×3stories
+67ft-78ft

Overall

1762

Males

1688

M18-39

1688

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

1867

Males

1790

M18-39

1790

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2000

Males

1923

M18-39

1923

Half→25K

13.1 - 15.5 mi

Top 18%
×4stories
+66ft-88ft

Overall

4844

Males

4483

M18-39

4483

25K→30K

15.5 - 18.6 mi

Top 7%
×9stories
+181ft-148ft

Overall

1888

Males

1807

M18-39

1807

30K→20M

18.6 - 20.0 mi

Top 7%
×5stories
+64ft-50ft

Overall

1737

Males

1657

M18-39

1657

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1527

Males

1456

M18-39

1456

21M→35K

21.0 - 21.8 mi

Top 6%
×7stories
+17ft-86ft

Overall

1604

Males

1524

M18-39

1524

35K→23M

21.8 - 23.0 mi

Top 8%
×5stories
+23ft-63ft

Overall

2204

Males

2077

M18-39

2077

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2157

Males

2023

M18-39

2023

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

2998

Males

2756

M18-39

2756

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

2873

Males

2628

M18-39

2628

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

2835

Males

2572

M18-39

2572

Passing Analysis

Category:
Athletes Passed
1218
Passed By
570
Net Change
+648
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2671
5K → 10K49711+486#2671#2185
10K → 15K1857+178#2185#2007
15K → 20K7933+46#2007#1961
20K → Half1612+4#1961#1957
Half → 25K4344-340#1957#2297
25K → 30K11125+86#2297#2211
30K → 20M767+69#2211#2142
20M → 21M636+57#2142#2085
21M → 35K312+29#2085#2056
35K → 23M5128+23#2056#2033
23M → 24M3521+14#2033#2019
24M → 40K1930-11#2019#2030
40K → 25.2M1211+1#2030#2029
25.2M → Finish3933+6#2029#2023
TOTALS1218570+648
📊

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