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BOSTON MARATHON 2023

Bryce Dreifuss

Bib: 4554•M

AZ

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 12%
Gender (Male)
#0 / 15176
Top 20%
Division (M18-39)
#0 / 5285
Top 42%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:58
Rank: #4106
Start → 5K
6:45/mi
20:58 split
10K· 6.21 mi
41:30
Rank: #3763 (+343)
5K → 10K
6:37/mi
20:32 split
15K· 9.32 mi
1:02:11
Rank: #3726 (+37)
10K → 15K
6:39/mi
20:41 split
20K· 12.43 mi
1:22:56
Rank: #3623 (+103)
15K → 20K
6:41/mi
20:45 split
Half· 13.11 mi
1:27:21
Rank: #3557 (+66)
20K → Half
6:28/mi
4:25 split
25K· 15.53 mi
1:43:29
Rank: #3430 (+127)
Half → 25K
6:39/mi
16:08 split
30K· 18.64 mi
2:04:25
Rank: #3233 (+197)
25K → 30K
6:44/mi
20:56 split
20M
2:13:41
Rank: #3179 (+54)
30K → 20M
6:49/mi
9:16 split
21M
2:21:59
Rank: #3545 (-366)
20M → 21M
8:18/mi
8:18 split
35K· 21.75 mi
2:26:47
Rank: #3435 (+110)
21M → 35K
6:25/mi
4:48 split
23M
2:35:16
Rank: #3341 (+94)
35K → 23M
6:47/mi
8:29 split
24M
2:41:46
Rank: #3251 (+90)
23M → 24M
6:30/mi
6:30 split
40K· 24.85 mi
2:47:32
Rank: #3198 (+53)
24M → 40K
6:45/mi
5:46 split
25.2M
2:49:58
Rank: #3161 (+37)
40K → 25.2M
7:03/mi
2:26 split
Finish· 26.22 mi
2:56:49
Rank: #3144 (+17)
25.2M → Finish
6:43/mi
6:51 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:21
Pace6:40 /mi
2nd Half
Distance13.11 mi
Time1:29:28
Pace6:49 /mi
📊Positive Split: 2.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:1420:586:4520:58
6:45
-
10K
6.21 mi10:43:4641:306:4120:32
6:37
-0:08
15K
9.32 mi11:04:271:02:116:4020:41
6:39
+0:02
20K
12.43 mi11:25:121:22:566:4020:45
6:41
+0:02
Half
13.11 mi11:29:371:27:216:404:25
6:28
-0:13
25K
15.53 mi11:45:451:43:296:4016:08
6:39
+0:11
30K
18.64 mi12:06:412:04:256:4020:56
6:44
+0:05
20M
20.00 mi12:15:572:13:416:419:16
6:49
+0:05
21M
21.00 mi12:24:152:21:596:468:18
8:18
+1:29
35K
21.75 mi12:29:032:26:476:454:48
6:25
-1:53
23M
23.00 mi12:37:322:35:166:458:29
6:47
+0:22
24M
24.00 mi12:44:022:41:466:446:30
6:30
-0:17
40K
24.85 mi12:49:482:47:326:445:46
6:45
+0:15
25.2M
25.20 mi12:52:142:49:586:452:26
7:03
+0:18
Finish
26.22 mi12:59:052:56:496:456:51
6:43
-0:20

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

6:25 /mi

Average Pace

6:45 /mi

Slowest Pace

8:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

15:43

9% of race

Time at Steady Pace

2:30:22

85% of race

Time at Slower Pace

10:44

6% of race

Average Pace: 6:45 /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 mi10:23:1420:586:4520:58
6:45
#4106
10K
6.21 mi10:43:4641:306:4120:32
6:37
#3763
15K
9.32 mi11:04:271:02:116:4020:41
6:39
#3726
20K
12.43 mi11:25:121:22:566:4020:45
6:41
#3623
Half
13.11 mi11:29:371:27:216:404:25
6:28
#3557
25K
15.53 mi11:45:451:43:296:4016:08
6:39
#3430
30K
18.64 mi12:06:412:04:256:4020:56
6:44
#3233
20M
20.00 mi12:15:572:13:416:419:16
6:49
#3179
21M
21.00 mi12:24:152:21:596:468:18
8:18
#3545
35K
21.75 mi12:29:032:26:476:454:48
6:25
#3435
23M
23.00 mi12:37:322:35:166:458:29
6:47
#3341
24M
24.00 mi12:44:022:41:466:446:30
6:30
#3251
40K
24.85 mi12:49:482:47:326:445:46
6:45
#3198
25.2M
25.20 mi12:52:142:49:586:452:26
7:03
#3161
Finish
26.22 mi12:59:052:56:496:456:51
6:43
#3144
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4106385138513732(Top 14%)3516(Top 23%)3516(Top 67%)
10K6.21 mi3.10 mi3763+3433546+3053546+3053555(Top 13%)3361(Top 22%)3361(Top 64%)
15K9.32 mi3.11 mi3726+373517+293517+293732(Top 14%)3516(Top 23%)3516(Top 67%)
20K12.43 mi3.11 mi3623+1033429+883429+883399(Top 13%)3222(Top 21%)3222(Top 61%)
Half13.11 mi0.68 mi3557+663367+623367+622652(Top 10%)2546(Top 17%)2546(Top 48%)
25K15.53 mi2.42 mi3430+1273257+1103257+1103028(Top 11%)2886(Top 19%)2886(Top 55%)
30K18.64 mi3.11 mi3233+1973077+1803077+1802616(Top 10%)2487(Top 16%)2487(Top 47%)
20M20.00 mi1.36 mi3179+543021+563021+562943(Top 11%)2768(Top 18%)2768(Top 52%)
21M21.00 mi1.00 mi3545-3663358-3373358-3379192(Top 35%)7164(Top 47%)7164(Top 136%)
35K21.75 mi0.75 mi3435+1103252+1063252+1062061(Top 8%)1959(Top 13%)1959(Top 37%)
23M23.00 mi1.25 mi3341+943164+883164+882525(Top 9%)2371(Top 16%)2371(Top 45%)
24M24.00 mi1.00 mi3251+903077+873077+872106(Top 8%)1976(Top 13%)1976(Top 37%)
40K24.85 mi0.85 mi3198+533025+523025+522552(Top 10%)2366(Top 16%)2366(Top 45%)
25.2M25.20 mi0.35 mi3161+372994+312994+311956(Top 7%)1839(Top 12%)1839(Top 35%)
Finish26.22 mi1.02 mi3144+172974+202974+203615(Top 14%)3229(Top 21%)3229(Top 61%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

3732

Males

3516

M18-39

3516

5K→10K

3.1 - 6.2 mi

Top 13%
×5stories
+79ft-138ft

Overall

3555

Males

3361

M18-39

3361

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

3732

Males

3516

M18-39

3516

15K→20K

9.3 - 12.4 mi

Top 13%
×5stories
+106ft-86ft

Overall

3399

Males

3222

M18-39

3222

20K→Half

12.4 - 13.1 mi

Top 10%
×2stories
+19ft-37ft

Overall

2652

Males

2546

M18-39

2546

Half→25K

13.1 - 15.5 mi

Top 11%
×4stories
+66ft-88ft

Overall

3028

Males

2886

M18-39

2886

25K→30K

15.5 - 18.6 mi

Top 10%
×9stories
+181ft-148ft

Overall

2616

Males

2487

M18-39

2487

30K→20M

18.6 - 20.0 mi

Top 11%
×5stories
+64ft-50ft

Overall

2943

Males

2768

M18-39

2768

20M→21M

20.0 - 21.0 mi

Top 35%
×8stories
+106ft-24ft

Overall

9192

Males

7164

M18-39

7164

21M→35K

21.0 - 21.8 mi

Top 8%
×7stories
+17ft-86ft

Overall

2061

Males

1959

M18-39

1959

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2525

Males

2371

M18-39

2371

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2106

Males

1976

M18-39

1976

24M→40K

24.0 - 24.9 mi

Top 10%
×1story
+6ft-20ft

Overall

2552

Males

2366

M18-39

2366

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

1956

Males

1839

M18-39

1839

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2stories
+22ft-21ft

Overall

3615

Males

3229

M18-39

3229

Passing Analysis

Category:
Athletes Passed
1702
Passed By
740
Net Change
+962
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4106
5K → 10K43390+343#4106#3763
10K → 15K12689+37#3763#3726
15K → 20K15148+103#3726#3623
20K → Half671+66#3623#3557
Half → 25K14518+127#3557#3430
25K → 30K21013+197#3430#3233
30K → 20M8329+54#3233#3179
20M → 21M5371-366#3179#3545
21M → 35K1155+110#3545#3435
35K → 23M10814+94#3435#3341
23M → 24M977+90#3341#3251
24M → 40K618+53#3251#3198
40K → 25.2M447+37#3198#3161
25.2M → Finish5740+17#3161#3144
TOTALS1702740+962
📊

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