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BOSTON MARATHON 2023

Zachary Zarnik

Bib: 5465•M

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 26%
Gender (Male)
#0 / 15176
Top 40%
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:25
Rank: #5514
Start → 5K
21:25 | 6:54/mi
10K· 6.21 mi
42:55
Rank: #5871 (-357)
5K → 10K
21:30 | 6:55/mi
15K· 9.32 mi
1:04:41
Rank: #6125 (-254)
10K → 15K
21:46 | 7:00/mi
20K· 12.43 mi
1:26:39
Rank: #6172 (-47)
15K → 20K
21:58 | 7:04/mi
Half· 13.11 mi
1:31:23
Rank: #6183 (-11)
20K → Half
4:44 | 6:56/mi
25K· 15.53 mi
1:48:59
Rank: #6315 (-132)
Half → 25K
17:36 | 7:16/mi
30K· 18.64 mi
2:12:14
Rank: #6367 (-52)
25K → 30K
23:15 | 7:29/mi
20M
2:22:38
Rank: #6420 (-53)
30K → 20M
10:24 | 7:39/mi
21M
2:30:50
Rank: #6474 (-54)
20M → 21M
8:12 | 8:12/mi
35K· 21.75 mi
2:36:28
Rank: #6516 (-42)
21M → 35K
5:38 | 7:32/mi
23M
2:46:15
Rank: #6573 (-57)
35K → 23M
9:47 | 7:49/mi
24M
2:54:08
Rank: #6658 (-85)
23M → 24M
7:53 | 7:53/mi
40K· 24.85 mi
3:01:05
Rank: #6756 (-98)
24M → 40K
6:57 | 8:08/mi
25.2M
3:04:12
Rank: #6823 (-67)
40K → 25.2M
3:07 | 9:02/mi
Finish· 26.22 mi
3:12:27
Rank: #7001 (-178)
25.2M → Finish
8:15 | 8:06/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:23
Pace6:58 /mi
2nd Half
Distance13.11 mi
Time1:41:04
Pace7:43 /mi
📊Positive Split: 10.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:0721:256:5421:25
6:54
-
10K
6.21 mi10:45:3742:556:5421:30
6:55
+0:01
15K
9.32 mi11:07:231:04:416:5621:46
7:00
+0:05
20K
12.43 mi11:29:211:26:396:5821:58
7:04
+0:04
Half
13.11 mi11:34:051:31:236:584:44
6:56
-0:08
25K
15.53 mi11:51:411:48:597:0117:36
7:16
+0:20
30K
18.64 mi12:14:562:12:147:0623:15
7:29
+0:13
20M
20.00 mi12:25:202:22:387:0810:24
7:39
+0:10
21M
21.00 mi12:33:322:30:507:118:12
8:12
+0:33
35K
21.75 mi12:39:102:36:287:125:38
7:32
-0:40
23M
23.00 mi12:48:572:46:157:149:47
7:49
+0:17
24M
24.00 mi12:56:502:54:087:157:53
7:53
+0:04
40K
24.85 mi13:03:473:01:057:176:57
8:08
+0:15
25.2M
25.20 mi13:06:543:04:127:193:07
9:02
+0:54
Finish
26.22 mi13:15:093:12:277:218:15
8:06
-0:56

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

6:54 /mi

Average Pace

7:21 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:31:23

47% of race

Time at Steady Pace

1:06:40

35% of race

Time at Slower Pace

34:24

18% of race

Average Pace: 7:20 /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 mi10:24:0721:256:5421:25
6:54
#5514
10K
6.21 mi10:45:3742:556:5421:30
6:55
#5871
15K
9.32 mi11:07:231:04:416:5621:46
7:00
#6125
20K
12.43 mi11:29:211:26:396:5821:58
7:04
#6172
Half
13.11 mi11:34:051:31:236:584:44
6:56
#6183
25K
15.53 mi11:51:411:48:597:0117:36
7:16
#6315
30K
18.64 mi12:14:562:12:147:0623:15
7:29
#6367
20M
20.00 mi12:25:202:22:387:0810:24
7:39
#6420
21M
21.00 mi12:33:322:30:507:118:12
8:12
#6474
35K
21.75 mi12:39:102:36:287:125:38
7:32
#6516
23M
23.00 mi12:48:572:46:157:149:47
7:49
#6573
24M
24.00 mi12:56:502:54:087:157:53
7:53
#6658
40K
24.85 mi13:03:473:01:057:176:57
8:08
#6756
25.2M
25.20 mi13:06:543:04:127:193:07
9:02
#6823
Finish
26.22 mi13:15:093:12:277:218:15
8:06
#7001
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5514508750876588(Top 25%)5928(Top 39%)5928(Top 112%)
10K6.21 mi3.10 mi5871-3575381-2945381-2946283(Top 24%)5686(Top 37%)5686(Top 108%)
15K9.32 mi3.11 mi6125-2545576-1955576-1956588(Top 25%)5928(Top 39%)5928(Top 112%)
20K12.43 mi3.11 mi6172-475608-325608-326396(Top 24%)5767(Top 38%)5767(Top 109%)
Half13.11 mi0.68 mi6183-115622-145622-146219(Top 23%)5662(Top 37%)5662(Top 107%)
25K15.53 mi2.42 mi6315-1325715-935715-937007(Top 26%)6161(Top 41%)6161(Top 117%)
30K18.64 mi3.11 mi6367-525745-305745-307100(Top 27%)6135(Top 40%)6135(Top 116%)
20M20.00 mi1.36 mi6420-535771-265771-267811(Top 29%)6471(Top 43%)6471(Top 122%)
21M21.00 mi1.00 mi6474-545793-225793-228583(Top 32%)6819(Top 45%)6819(Top 129%)
35K21.75 mi0.75 mi6516-425818-255818-258680(Top 33%)6897(Top 45%)6897(Top 131%)
23M23.00 mi1.25 mi6573-575847-295847-298479(Top 32%)6680(Top 44%)6680(Top 126%)
24M24.00 mi1.00 mi6658-855897-505897-5010366(Top 39%)7575(Top 50%)7575(Top 143%)
40K24.85 mi0.85 mi6756-985945-485945-4810848(Top 41%)7755(Top 51%)7755(Top 147%)
25.2M25.20 mi0.35 mi6823-675987-425987-4212644(Top 47%)8557(Top 56%)8557(Top 162%)
Finish26.22 mi1.02 mi7001-1786083-966083-9612699(Top 48%)8614(Top 57%)8614(Top 163%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21stories
+97ft-345ft

Overall

6588

Males

5928

M18-39

5928

5K→10K

3.1 - 6.2 mi

Top 24%
×5stories
+79ft-138ft

Overall

6283

Males

5686

M18-39

5686

10K→15K

6.2 - 9.3 mi

Top 25%
×3stories
+67ft-78ft

Overall

6588

Males

5928

M18-39

5928

15K→20K

9.3 - 12.4 mi

Top 24%
×5stories
+106ft-86ft

Overall

6396

Males

5767

M18-39

5767

20K→Half

12.4 - 13.1 mi

Top 23%
×2stories
+19ft-37ft

Overall

6219

Males

5662

M18-39

5662

Half→25K

13.1 - 15.5 mi

Top 26%
×4stories
+66ft-88ft

Overall

7007

Males

6161

M18-39

6161

25K→30K

15.5 - 18.6 mi

Top 27%
×9stories
+181ft-148ft

Overall

7100

Males

6135

M18-39

6135

30K→20M

18.6 - 20.0 mi

Top 29%
×5stories
+64ft-50ft

Overall

7811

Males

6471

M18-39

6471

20M→21M

20.0 - 21.0 mi

Top 32%
×8stories
+106ft-24ft

Overall

8583

Males

6819

M18-39

6819

21M→35K

21.0 - 21.8 mi

Top 33%
×7stories
+17ft-86ft

Overall

8680

Males

6897

M18-39

6897

35K→23M

21.8 - 23.0 mi

Top 32%
×5stories
+23ft-63ft

Overall

8479

Males

6680

M18-39

6680

23M→24M

23.0 - 24.0 mi

Top 39%
×6stories
+12ft-82ft

Overall

10366

Males

7575

M18-39

7575

24M→40K

24.0 - 24.9 mi

Top 41%
×1story
+6ft-20ft

Overall

10848

Males

7755

M18-39

7755

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12644

Males

8557

M18-39

8557

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2stories
+22ft-21ft

Overall

12699

Males

8614

M18-39

8614

Passing Analysis

Category:
Athletes Passed
607
Passed By
2094
Net Change
-1487
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5514
5K → 10K76433-357#5514#5871
10K → 15K41295-254#5871#6125
15K → 20K80127-47#6125#6172
20K → Half1728-11#6172#6183
Half → 25K44176-132#6183#6315
25K → 30K102154-52#6315#6367
30K → 20M4093-53#6367#6420
20M → 21M46100-54#6420#6474
21M → 35K2769-42#6474#6516
35K → 23M47104-57#6516#6573
23M → 24M23108-85#6573#6658
24M → 40K36134-98#6658#6756
40K → 25.2M1582-67#6756#6823
25.2M → Finish13191-178#6823#7001
TOTALS6072094-1487
📊

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