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BOSTON MARATHON 2023

Brian Geiszler

Bib: 3554•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 13%
Gender (Male)
#0 / 15176
Top 21%
Masters (Masters Men)
#0 / 9891
Top 9%
Division (M40-44)
#0 / 2241
Top 22%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:20
Rank: #5257
Start → 5K
21:20 | 6:52/mi
10K· 6.21 mi
42:12
Rank: #4888 (+369)
5K → 10K
20:52 | 6:43/mi
15K· 9.32 mi
1:03:01
Rank: #4609 (+279)
10K → 15K
20:49 | 6:42/mi
20K· 12.43 mi
1:23:53
Rank: #4340 (+269)
15K → 20K
20:52 | 6:43/mi
Half· 13.11 mi
1:28:24
Rank: #4292 (+48)
20K → Half
4:31 | 6:37/mi
25K· 15.53 mi
1:44:44
Rank: #4144 (+148)
Half → 25K
16:20 | 6:44/mi
30K· 18.64 mi
2:06:10
Rank: #4016 (+128)
25K → 30K
21:26 | 6:54/mi
20M
2:15:27
Rank: #3889 (+127)
30K → 20M
9:17 | 6:50/mi
21M
2:22:38
Rank: #3786 (+103)
20M → 21M
7:11 | 7:11/mi
35K· 21.75 mi
2:27:38
Rank: #3770 (+16)
21M → 35K
5:00 | 6:41/mi
23M
2:36:00
Rank: #3584 (+186)
35K → 23M
8:22 | 6:41/mi
24M
2:42:37
Rank: #3517 (+67)
23M → 24M
6:37 | 6:37/mi
40K· 24.85 mi
2:48:21
Rank: #3443 (+74)
24M → 40K
5:44 | 6:42/mi
25.2M
2:50:51
Rank: #3425 (+18)
40K → 25.2M
2:30 | 7:15/mi
Finish· 26.22 mi
2:57:36
Rank: #3358 (+67)
25.2M → Finish
6:45 | 6:37/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:28:24
Pace6:45 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:29:12
Pace6:48 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:4021:206:5221:20
6:52
-
10K
6.21 mi10:43:3242:126:4720:52
6:43
-0:09
15K
9.32 mi11:04:211:03:016:4620:49
6:42
-0:01
20K
12.43 mi11:25:131:23:536:4520:52
6:43
+0:01
Half
13.11 mi11:29:441:28:246:454:31
6:37
-0:06
25K
15.53 mi11:46:041:44:446:4516:20
6:44
+0:07
30K
18.64 mi12:07:302:06:106:4621:26
6:54
+0:10
20M
20.00 mi12:16:472:15:276:469:17
6:50
-0:04
21M
21.00 mi12:23:582:22:386:487:11
7:11
+0:21
35K
21.75 mi12:28:582:27:386:475:00
6:41
-0:30
23M
23.00 mi12:37:202:36:006:478:22
6:41
0:00
24M
24.00 mi12:43:572:42:376:476:37
6:37
-0:04
40K
24.85 mi12:49:412:48:216:465:44
6:42
+0:05
25.2M
25.20 mi12:52:112:50:516:472:30
7:15
+0:33
Finish
26.22 mi12:58:562:57:366:476:45
6:37
-0:38

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

6:37 /mi

Average Pace

6:47 /mi

Slowest Pace

7:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:47:55

95% of race

Time at Steady Pace

9:41

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:46 /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 mi10:22:4021:206:5221:20
6:52
#5257
10K
6.21 mi10:43:3242:126:4720:52
6:43
#4888
15K
9.32 mi11:04:211:03:016:4620:49
6:42
#4609
20K
12.43 mi11:25:131:23:536:4520:52
6:43
#4340
Half
13.11 mi11:29:441:28:246:454:31
6:37
#4292
25K
15.53 mi11:46:041:44:446:4516:20
6:44
#4144
30K
18.64 mi12:07:302:06:106:4621:26
6:54
#4016
20M
20.00 mi12:16:472:15:276:469:17
6:50
#3889
21M
21.00 mi12:23:582:22:386:487:11
7:11
#3786
35K
21.75 mi12:28:582:27:386:475:00
6:41
#3770
23M
23.00 mi12:37:202:36:006:478:22
6:41
#3584
24M
24.00 mi12:43:572:42:376:476:37
6:37
#3517
40K
24.85 mi12:49:412:48:216:465:44
6:42
#3443
25.2M
25.20 mi12:52:112:50:516:472:30
7:15
#3425
Finish
26.22 mi12:58:562:57:366:476:45
6:37
#3358
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi5257486448644118(Top 15%)3864(Top 25%)3864(Top 172%)
10K6.21 mi3.10 mi4888+3694539+3254539+3254487(Top 17%)4192(Top 28%)4192(Top 187%)
15K9.32 mi3.11 mi4609+2794301+2384301+2384118(Top 15%)3864(Top 25%)3864(Top 172%)
20K12.43 mi3.11 mi4340+2694063+2384063+2383691(Top 14%)3490(Top 23%)3490(Top 156%)
Half13.11 mi0.68 mi4292+484017+464017+463572(Top 13%)3380(Top 22%)3380(Top 151%)
25K15.53 mi2.42 mi4144+1483885+1323885+1323637(Top 14%)3426(Top 23%)3426(Top 153%)
30K18.64 mi3.11 mi4016+1283777+1083777+1083646(Top 14%)3425(Top 23%)3425(Top 153%)
20M20.00 mi1.36 mi3889+1273664+1133664+1133024(Top 11%)2844(Top 19%)2844(Top 127%)
21M21.00 mi1.00 mi3786+1033565+993565+993003(Top 11%)2814(Top 19%)2814(Top 126%)
35K21.75 mi0.75 mi3770+163552+133552+133446(Top 13%)3198(Top 21%)3198(Top 143%)
23M23.00 mi1.25 mi3584+1863384+1683384+1682119(Top 8%)2008(Top 13%)2008(Top 90%)
24M24.00 mi1.00 mi3517+673323+613323+612657(Top 10%)2475(Top 16%)2475(Top 110%)
40K24.85 mi0.85 mi3443+743253+703253+702382(Top 9%)2212(Top 15%)2212(Top 99%)
25.2M25.20 mi0.35 mi3425+183235+183235+182722(Top 10%)2508(Top 17%)2508(Top 112%)
Finish26.22 mi1.02 mi3358+673170+653170+653098(Top 12%)2793(Top 18%)2793(Top 125%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

4118

Males

3864

M40-44

3864

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4487

Males

4192

M40-44

4192

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

4118

Males

3864

M40-44

3864

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3691

Males

3490

M40-44

3490

20K→Half

12.4 - 13.1 mi

Top 13%
×2stories
+19ft-37ft

Overall

3572

Males

3380

M40-44

3380

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3637

Males

3426

M40-44

3426

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

3646

Males

3425

M40-44

3425

30K→20M

18.6 - 20.0 mi

Top 11%
×5stories
+64ft-50ft

Overall

3024

Males

2844

M40-44

2844

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

3003

Males

2814

M40-44

2814

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3446

Males

3198

M40-44

3198

35K→23M

21.8 - 23.0 mi

Top 8%
×5stories
+23ft-63ft

Overall

2119

Males

2008

M40-44

2008

23M→24M

23.0 - 24.0 mi

Top 10%
×6stories
+12ft-82ft

Overall

2657

Males

2475

M40-44

2475

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2382

Males

2212

M40-44

2212

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2722

Males

2508

M40-44

2508

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2stories
+22ft-21ft

Overall

3098

Males

2793

M40-44

2793

Passing Analysis

Category:
Athletes Passed
2162
Passed By
263
Net Change
+1899
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5257
5K → 10K42758+369#5257#4888
10K → 15K30122+279#4888#4609
15K → 20K28011+269#4609#4340
20K → Half524+48#4340#4292
Half → 25K16719+148#4292#4144
25K → 30K18052+128#4144#4016
30K → 20M13710+127#4016#3889
20M → 21M11815+103#3889#3786
21M → 35K3216+16#3786#3770
35K → 23M1937+186#3770#3584
23M → 24M8114+67#3584#3517
24M → 40K817+74#3517#3443
40K → 25.2M279+18#3443#3425
25.2M → Finish8619+67#3425#3358
TOTALS2162263+1899
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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