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BOSTON MARATHON 2023

Brett Guemmer

Bib: 871•M

MO

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 1%
Gender (Male)
#0 / 15176
Top 2%
Division (M18-39)
#0 / 5285
Top 5%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:49
Rank: #790
Start → 5K
18:49 | 6:03/mi
10K· 6.21 mi
37:19
Rank: #741 (+49)
5K → 10K
18:30 | 5:57/mi
15K· 9.32 mi
55:26
Rank: #614 (+127)
10K → 15K
18:07 | 5:50/mi
20K· 12.43 mi
1:13:45
Rank: #552 (+62)
15K → 20K
18:19 | 5:54/mi
Half· 13.11 mi
1:17:44
Rank: #545 (+7)
20K → Half
3:59 | 5:50/mi
25K· 15.53 mi
1:31:43
Rank: #484 (+61)
Half → 25K
13:59 | 5:46/mi
30K· 18.64 mi
1:49:29
Rank: #383 (+101)
25K → 30K
17:46 | 5:43/mi
20M
1:57:15
Rank: #355 (+28)
30K → 20M
7:46 | 5:43/mi
21M
2:03:27
Rank: #343 (+12)
20M → 21M
6:12 | 6:12/mi
35K· 21.75 mi
2:07:40
Rank: #330 (+13)
21M → 35K
4:13 | 5:38/mi
23M
2:15:14
Rank: #327 (+3)
35K → 23M
7:34 | 6:03/mi
24M
2:21:01
Rank: #315 (+12)
23M → 24M
5:47 | 5:47/mi
40K· 24.85 mi
2:26:08
Rank: #306 (+9)
24M → 40K
5:07 | 5:59/mi
25.2M
2:28:22
Rank: #302 (+4)
40K → 25.2M
2:14 | 6:29/mi
Finish· 26.22 mi
2:34:26
Rank: #303 (-1)
25.2M → Finish
6:04 | 5:57/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:17:44
Pace5:56 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:16:42
Pace5:51 /mi
📊Negative Split: 1.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:0118:496:0318:49
6:03
-
10K
6.21 mi10:37:3137:196:0018:30
5:57
-0:06
15K
9.32 mi10:55:3855:265:5718:07
5:50
-0:07
20K
12.43 mi11:13:571:13:455:5618:19
5:54
+0:04
Half
13.11 mi11:17:561:17:445:563:59
5:50
-0:04
25K
15.53 mi11:31:551:31:435:5413:59
5:46
-0:04
30K
18.64 mi11:49:411:49:295:5217:46
5:43
-0:03
20M
20.00 mi11:57:271:57:155:527:46
5:43
0:00
21M
21.00 mi12:03:392:03:275:536:12
6:12
+0:29
35K
21.75 mi12:07:522:07:405:524:13
5:38
-0:34
23M
23.00 mi12:15:262:15:145:537:34
6:03
+0:25
24M
24.00 mi12:21:132:21:015:535:47
5:47
-0:16
40K
24.85 mi12:26:202:26:085:535:07
5:59
+0:12
25.2M
25.20 mi12:28:342:28:225:532:14
6:29
+0:30
Finish
26.22 mi12:34:382:34:265:546:04
5:57
-0:32

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

5:38 /mi

Average Pace

5:54 /mi

Slowest Pace

6:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:26:00

95% of race

Time at Steady Pace

8:26

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:53 /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 mi10:19:0118:496:0318:49
6:03
#790
10K
6.21 mi10:37:3137:196:0018:30
5:57
#741
15K
9.32 mi10:55:3855:265:5718:07
5:50
#614
20K
12.43 mi11:13:571:13:455:5618:19
5:54
#552
Half
13.11 mi11:17:561:17:445:563:59
5:50
#545
25K
15.53 mi11:31:551:31:435:5413:59
5:46
#484
30K
18.64 mi11:49:411:49:295:5217:46
5:43
#383
20M
20.00 mi11:57:271:57:155:527:46
5:43
#355
21M
21.00 mi12:03:392:03:275:536:12
6:12
#343
35K
21.75 mi12:07:522:07:405:524:13
5:38
#330
23M
23.00 mi12:15:262:15:145:537:34
6:03
#327
24M
24.00 mi12:21:132:21:015:535:47
5:47
#315
40K
24.85 mi12:26:202:26:085:535:07
5:59
#306
25.2M
25.20 mi12:28:342:28:225:532:14
6:29
#302
Finish
26.22 mi12:34:382:34:265:546:04
5:57
#303
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi790741741402(Top 2%)368(Top 2%)368(Top 7%)
10K6.21 mi3.10 mi741+49697+44697+44698(Top 3%)654(Top 4%)654(Top 12%)
15K9.32 mi3.11 mi614+127571+126571+126402(Top 2%)368(Top 2%)368(Top 7%)
20K12.43 mi3.11 mi552+62510+61510+61411(Top 2%)377(Top 2%)377(Top 7%)
Half13.11 mi0.68 mi545+7504+6504+6431(Top 2%)399(Top 3%)399(Top 8%)
25K15.53 mi2.42 mi484+61445+59445+59232(Top 0.9%)209(Top 1%)209(Top 4%)
30K18.64 mi3.11 mi383+101351+94351+94117(Top 0.4%)98(Top 0.6%)98(Top 2%)
20M20.00 mi1.36 mi355+28323+28323+28119(Top 0.4%)100(Top 0.7%)100(Top 2%)
21M21.00 mi1.00 mi343+12311+12311+12236(Top 0.9%)212(Top 1%)212(Top 4%)
35K21.75 mi0.75 mi330+13299+12299+12169(Top 0.6%)146(Top 1.0%)146(Top 3%)
23M23.00 mi1.25 mi327+3296+3296+3353(Top 1%)327(Top 2%)327(Top 6%)
24M24.00 mi1.00 mi315+12284+12284+12226(Top 0.8%)203(Top 1%)203(Top 4%)
40K24.85 mi0.85 mi306+9276+8276+8320(Top 1%)296(Top 2%)296(Top 6%)
25.2M25.20 mi0.35 mi302+4272+4272+4450(Top 2%)424(Top 3%)424(Top 8%)
Finish26.22 mi1.02 mi303-1275-3275-3610(Top 2%)579(Top 4%)579(Top 11%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21stories
+97ft-345ft

Overall

402

Males

368

M18-39

368

5K→10K

3.1 - 6.2 mi

Top 3%
×5stories
+79ft-138ft

Overall

698

Males

654

M18-39

654

10K→15K

6.2 - 9.3 mi

Top 2%
×3stories
+67ft-78ft

Overall

402

Males

368

M18-39

368

15K→20K

9.3 - 12.4 mi

Top 2%
×5stories
+106ft-86ft

Overall

411

Males

377

M18-39

377

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

431

Males

399

M18-39

399

Half→25K

13.1 - 15.5 mi

Top 0.9%
×4stories
+66ft-88ft

Overall

232

Males

209

M18-39

209

25K→30K

15.5 - 18.6 mi

Top 0.4%
×9stories
+181ft-148ft

Overall

117

Males

98

M18-39

98

30K→20M

18.6 - 20.0 mi

Top 0.4%
×5stories
+64ft-50ft

Overall

119

Males

100

M18-39

100

20M→21M

20.0 - 21.0 mi

Top 0.9%
×8stories
+106ft-24ft

Overall

236

Males

212

M18-39

212

21M→35K

21.0 - 21.8 mi

Top 0.6%
×7stories
+17ft-86ft

Overall

169

Males

146

M18-39

146

35K→23M

21.8 - 23.0 mi

Top 1%
×5stories
+23ft-63ft

Overall

353

Males

327

M18-39

327

23M→24M

23.0 - 24.0 mi

Top 0.8%
×6stories
+12ft-82ft

Overall

226

Males

203

M18-39

203

24M→40K

24.0 - 24.9 mi

Top 1%
×1story
+6ft-20ft

Overall

320

Males

296

M18-39

296

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

450

Males

424

M18-39

424

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

610

Males

579

M18-39

579

Passing Analysis

Category:
Athletes Passed
534
Passed By
47
Net Change
+487
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#790
5K → 10K7223+49#790#741
10K → 15K1281+127#741#614
15K → 20K620+62#614#552
20K → Half81+7#552#545
Half → 25K610+61#545#484
25K → 30K1010+101#484#383
30K → 20M280+28#383#355
20M → 21M131+12#355#343
21M → 35K130+13#343#330
35K → 23M118+3#330#327
23M → 24M131+12#327#315
24M → 40K112+9#315#306
40K → 25.2M51+4#306#302
25.2M → Finish89-1#302#303
TOTALS53447+487
📊

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