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BOSTON MARATHON 2023

David Guzik

Bib: 3167•M

CT

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 7%
Gender (Male)
#0 / 15176
Top 12%
Masters (Masters Men)
#0 / 9891
Top 4%
Division (M50-54)
#0 / 2052
Top 2%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:47
Rank: #1680
Start → 5K
19:47 | 6:22/mi
10K· 6.21 mi
39:11
Rank: #1593 (+87)
5K → 10K
19:24 | 6:15/mi
15K· 9.32 mi
58:53
Rank: #1661 (-68)
10K → 15K
19:42 | 6:20/mi
20K· 12.43 mi
1:18:56
Rank: #1726 (-65)
15K → 20K
20:03 | 6:27/mi
Half· 13.11 mi
1:23:18
Rank: #1755 (-29)
20K → Half
4:22 | 6:24/mi
25K· 15.53 mi
1:38:52
Rank: #1762 (-7)
Half → 25K
15:34 | 6:25/mi
30K· 18.64 mi
1:59:27
Rank: #1770 (-8)
25K → 30K
20:35 | 6:38/mi
20M
2:08:28
Rank: #1761 (+9)
30K → 20M
9:01 | 6:38/mi
21M
2:15:29
Rank: #1772 (-11)
20M → 21M
7:01 | 7:01/mi
35K· 21.75 mi
2:20:25
Rank: #1808 (-36)
21M → 35K
4:56 | 6:36/mi
23M
2:28:56
Rank: #1835 (-27)
35K → 23M
8:31 | 6:48/mi
24M
2:35:38
Rank: #1861 (-26)
23M → 24M
6:42 | 6:42/mi
40K· 24.85 mi
2:41:31
Rank: #1888 (-27)
24M → 40K
5:53 | 6:53/mi
25.2M
2:44:04
Rank: #1892 (-4)
40K → 25.2M
2:33 | 7:24/mi
Finish· 26.22 mi
2:51:01
Rank: #1943 (-51)
25.2M → Finish
6:57 | 6:49/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:18
Pace6:21 /mi
2nd Half
Distance13.11 mi
Time1:27:43
Pace6:41 /mi
📊Positive Split: 5.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:5319:476:2219:47
6:22
-
10K
6.21 mi10:40:1739:116:1819:24
6:15
-0:07
15K
9.32 mi10:59:5958:536:1919:42
6:20
+0:05
20K
12.43 mi11:20:021:18:566:2120:03
6:27
+0:07
Half
13.11 mi11:24:241:23:186:214:22
6:24
-0:03
25K
15.53 mi11:39:581:38:526:2215:34
6:25
+0:01
30K
18.64 mi12:00:331:59:276:2420:35
6:38
+0:13
20M
20.00 mi12:09:342:08:286:259:01
6:38
0:00
21M
21.00 mi12:16:352:15:296:277:01
7:01
+0:23
35K
21.75 mi12:21:312:20:256:274:56
6:36
-0:25
23M
23.00 mi12:30:022:28:566:298:31
6:48
+0:12
24M
24.00 mi12:36:442:35:386:296:42
6:42
-0:06
40K
24.85 mi12:42:372:41:316:305:53
6:53
+0:11
25.2M
25.20 mi12:45:102:44:046:312:33
7:24
+0:31
Finish
26.22 mi12:52:072:51:016:326:57
6:49
-0:35

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

6:15 /mi

Average Pace

6:32 /mi

Slowest Pace

7:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:35:34

91% of race

Time at Steady Pace

12:54

8% of race

Time at Slower Pace

2:33

1% of race

Average Pace: 6:31 /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 mi10:20:5319:476:2219:47
6:22
#1680
10K
6.21 mi10:40:1739:116:1819:24
6:15
#1593
15K
9.32 mi10:59:5958:536:1919:42
6:20
#1661
20K
12.43 mi11:20:021:18:566:2120:03
6:27
#1726
Half
13.11 mi11:24:241:23:186:214:22
6:24
#1755
25K
15.53 mi11:39:581:38:526:2215:34
6:25
#1762
30K
18.64 mi12:00:331:59:276:2420:35
6:38
#1770
20M
20.00 mi12:09:342:08:286:259:01
6:38
#1761
21M
21.00 mi12:16:352:15:296:277:01
7:01
#1772
35K
21.75 mi12:21:312:20:256:274:56
6:36
#1808
23M
23.00 mi12:30:022:28:566:298:31
6:48
#1835
24M
24.00 mi12:36:442:35:386:296:42
6:42
#1861
40K
24.85 mi12:42:372:41:316:305:53
6:53
#1888
25.2M
25.20 mi12:45:102:44:046:312:33
7:24
#1892
Finish
26.22 mi12:52:072:51:016:326:57
6:49
#1943
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi1680160116011833(Top 7%)1756(Top 12%)1756(Top 86%)
10K6.21 mi3.10 mi1593+871520+811520+811531(Top 6%)1464(Top 10%)1464(Top 71%)
15K9.32 mi3.11 mi1661-681588-681588-681833(Top 7%)1756(Top 12%)1756(Top 86%)
20K12.43 mi3.11 mi1726-651652-641652-642055(Top 8%)1974(Top 13%)1974(Top 96%)
Half13.11 mi0.68 mi1755-291678-261678-262204(Top 8%)2114(Top 14%)2114(Top 103%)
25K15.53 mi2.42 mi1762-71686-81686-81808(Top 7%)1731(Top 11%)1731(Top 84%)
30K18.64 mi3.11 mi1770-81694-81694-82060(Top 8%)1967(Top 13%)1967(Top 96%)
20M20.00 mi1.36 mi1761+91684+101684+102005(Top 8%)1910(Top 13%)1910(Top 93%)
21M21.00 mi1.00 mi1772-111697-131697-132196(Top 8%)2074(Top 14%)2074(Top 101%)
35K21.75 mi0.75 mi1808-361729-321729-322912(Top 11%)2723(Top 18%)2723(Top 133%)
23M23.00 mi1.25 mi1835-271755-261755-262647(Top 10%)2480(Top 16%)2480(Top 121%)
24M24.00 mi1.00 mi1861-261781-261781-263077(Top 12%)2852(Top 19%)2852(Top 139%)
40K24.85 mi0.85 mi1888-271806-251806-253184(Top 12%)2914(Top 19%)2914(Top 142%)
25.2M25.20 mi0.35 mi1892-41808-21808-23312(Top 12%)2995(Top 20%)2995(Top 146%)
Finish26.22 mi1.02 mi1943-511859-511859-514148(Top 16%)3652(Top 24%)3652(Top 178%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×21stories
+97ft-345ft

Overall

1833

Males

1756

M50-54

1756

5K→10K

3.1 - 6.2 mi

Top 6%
×5stories
+79ft-138ft

Overall

1531

Males

1464

M50-54

1464

10K→15K

6.2 - 9.3 mi

Top 7%
×3stories
+67ft-78ft

Overall

1833

Males

1756

M50-54

1756

15K→20K

9.3 - 12.4 mi

Top 8%
×5stories
+106ft-86ft

Overall

2055

Males

1974

M50-54

1974

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2204

Males

2114

M50-54

2114

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

1808

Males

1731

M50-54

1731

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2060

Males

1967

M50-54

1967

30K→20M

18.6 - 20.0 mi

Top 8%
×5stories
+64ft-50ft

Overall

2005

Males

1910

M50-54

1910

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2196

Males

2074

M50-54

2074

21M→35K

21.0 - 21.8 mi

Top 11%
×7stories
+17ft-86ft

Overall

2912

Males

2723

M50-54

2723

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2647

Males

2480

M50-54

2480

23M→24M

23.0 - 24.0 mi

Top 12%
×6stories
+12ft-82ft

Overall

3077

Males

2852

M50-54

2852

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3184

Males

2914

M50-54

2914

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3312

Males

2995

M50-54

2995

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2stories
+22ft-21ft

Overall

4148

Males

3652

M50-54

3652

Passing Analysis

Category:
Athletes Passed
445
Passed By
708
Net Change
-263
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1680
5K → 10K13346+87#1680#1593
10K → 15K34102-68#1593#1661
15K → 20K3095-65#1661#1726
20K → Half534-29#1726#1755
Half → 25K2936-7#1755#1762
25K → 30K5765-8#1762#1770
30K → 20M3425+9#1770#1761
20M → 21M2435-11#1761#1772
21M → 35K1248-36#1772#1808
35K → 23M2855-27#1808#1835
23M → 24M1743-26#1835#1861
24M → 40K1845-27#1861#1888
40K → 25.2M913-4#1888#1892
25.2M → Finish1566-51#1892#1943
TOTALS445708-263
📊

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