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BOSTON MARATHON 2023

Collin Zollman

Bib: 4320•M

IN

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 43%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:19
Rank: #5214
Start → 5K
21:19 | 6:52/mi
10K· 6.21 mi
42:04
Rank: #4685 (+529)
5K → 10K
20:45 | 6:41/mi
15K· 9.32 mi
1:03:03
Rank: #4642 (+43)
10K → 15K
20:59 | 6:45/mi
20K· 12.43 mi
1:24:07
Rank: #4534 (+108)
15K → 20K
21:04 | 6:47/mi
Half· 13.11 mi
1:28:45
Rank: #4556 (-22)
20K → Half
4:38 | 6:47/mi
25K· 15.53 mi
1:45:13
Rank: #4427 (+129)
Half → 25K
16:28 | 6:47/mi
30K· 18.64 mi
2:06:33
Rank: #4202 (+225)
25K → 30K
21:20 | 6:52/mi
20M
2:15:54
Rank: #4102 (+100)
30K → 20M
9:21 | 6:53/mi
21M
2:22:56
Rank: #3921 (+181)
20M → 21M
7:02 | 7:02/mi
35K· 21.75 mi
2:27:48
Rank: #3835 (+86)
21M → 35K
4:52 | 6:30/mi
23M
2:36:07
Rank: #3625 (+210)
35K → 23M
8:19 | 6:39/mi
24M
2:42:32
Rank: #3492 (+133)
23M → 24M
6:25 | 6:25/mi
40K· 24.85 mi
2:48:07
Rank: #3375 (+117)
24M → 40K
5:35 | 6:32/mi
25.2M
2:50:33
Rank: #3315 (+60)
40K → 25.2M
2:26 | 7:03/mi
Finish· 26.22 mi
2:57:07
Rank: #3225 (+90)
25.2M → Finish
6:34 | 6:27/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:28:45
Pace6:46 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:28:22
Pace6:44 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:5621:196:5221:19
6:52
-
10K
6.21 mi10:45:4142:046:4620:45
6:41
-0:11
15K
9.32 mi11:06:401:03:036:4620:59
6:45
+0:04
20K
12.43 mi11:27:441:24:076:4621:04
6:47
+0:02
Half
13.11 mi11:32:221:28:456:464:38
6:47
0:00
25K
15.53 mi11:48:501:45:136:4616:28
6:47
0:00
30K
18.64 mi12:10:102:06:336:4721:20
6:52
+0:05
20M
20.00 mi12:19:312:15:546:489:21
6:53
+0:01
21M
21.00 mi12:26:332:22:566:487:02
7:02
+0:09
35K
21.75 mi12:31:252:27:486:484:52
6:30
-0:32
23M
23.00 mi12:39:442:36:076:478:19
6:39
+0:09
24M
24.00 mi12:46:092:42:326:466:25
6:25
-0:14
40K
24.85 mi12:51:442:48:076:465:35
6:32
+0:07
25.2M
25.20 mi12:54:102:50:336:462:26
7:03
+0:31
Finish
26.22 mi13:00:442:57:076:466:34
6:27
-0:36

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

6:46 /mi

Slowest Pace

7:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

52:30

30% of race

Time at Steady Pace

2:04:37

70% of race

Time at Slower Pace

0:00

0% 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 mi10:24:5621:196:5221:19
6:52
#5214
10K
6.21 mi10:45:4142:046:4620:45
6:41
#4685
15K
9.32 mi11:06:401:03:036:4620:59
6:45
#4642
20K
12.43 mi11:27:441:24:076:4621:04
6:47
#4534
Half
13.11 mi11:32:221:28:456:464:38
6:47
#4556
25K
15.53 mi11:48:501:45:136:4616:28
6:47
#4427
30K
18.64 mi12:10:102:06:336:4721:20
6:52
#4202
20M
20.00 mi12:19:312:15:546:489:21
6:53
#4102
21M
21.00 mi12:26:332:22:566:487:02
7:02
#3921
35K
21.75 mi12:31:252:27:486:484:52
6:30
#3835
23M
23.00 mi12:39:442:36:076:478:19
6:39
#3625
24M
24.00 mi12:46:092:42:326:466:25
6:25
#3492
40K
24.85 mi12:51:442:48:076:465:35
6:32
#3375
25.2M
25.20 mi12:54:102:50:336:462:26
7:03
#3315
Finish
26.22 mi13:00:442:57:076:466:34
6:27
#3225
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5214482848284631(Top 17%)4324(Top 28%)4324(Top 82%)
10K6.21 mi3.10 mi4685+5294367+4614367+4614135(Top 16%)3879(Top 26%)3879(Top 73%)
15K9.32 mi3.11 mi4642+434329+384329+384631(Top 17%)4324(Top 28%)4324(Top 82%)
20K12.43 mi3.11 mi4534+1084234+954234+954240(Top 16%)3968(Top 26%)3968(Top 75%)
Half13.11 mi0.68 mi4556-224251-174251-175092(Top 19%)4702(Top 31%)4702(Top 89%)
25K15.53 mi2.42 mi4427+1294140+1114140+1114049(Top 15%)3795(Top 25%)3795(Top 72%)
30K18.64 mi3.11 mi4202+2253945+1953945+1953429(Top 13%)3225(Top 21%)3225(Top 61%)
20M20.00 mi1.36 mi4102+1003852+933852+933280(Top 12%)3069(Top 20%)3069(Top 58%)
21M21.00 mi1.00 mi3921+1813690+1623690+1622315(Top 9%)2188(Top 14%)2188(Top 41%)
35K21.75 mi0.75 mi3835+863608+823608+822454(Top 9%)2326(Top 15%)2326(Top 44%)
23M23.00 mi1.25 mi3625+2103423+1853423+1851944(Top 7%)1845(Top 12%)1845(Top 35%)
24M24.00 mi1.00 mi3492+1333300+1233300+1231765(Top 7%)1666(Top 11%)1666(Top 32%)
40K24.85 mi0.85 mi3375+1173189+1113189+1111672(Top 6%)1575(Top 10%)1575(Top 30%)
25.2M25.20 mi0.35 mi3315+603134+553134+551958(Top 7%)1841(Top 12%)1841(Top 35%)
Finish26.22 mi1.02 mi3225+903051+833051+832223(Top 8%)2063(Top 14%)2063(Top 39%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4631

Males

4324

M18-39

4324

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4135

Males

3879

M18-39

3879

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4631

Males

4324

M18-39

4324

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4240

Males

3968

M18-39

3968

20K→Half

12.4 - 13.1 mi

Top 19%
×2stories
+19ft-37ft

Overall

5092

Males

4702

M18-39

4702

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

4049

Males

3795

M18-39

3795

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3429

Males

3225

M18-39

3225

30K→20M

18.6 - 20.0 mi

Top 12%
×5stories
+64ft-50ft

Overall

3280

Males

3069

M18-39

3069

20M→21M

20.0 - 21.0 mi

Top 9%
×8stories
+106ft-24ft

Overall

2315

Males

2188

M18-39

2188

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2454

Males

2326

M18-39

2326

35K→23M

21.8 - 23.0 mi

Top 7%
×5stories
+23ft-63ft

Overall

1944

Males

1845

M18-39

1845

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

1765

Males

1666

M18-39

1666

24M→40K

24.0 - 24.9 mi

Top 6%
×1story
+6ft-20ft

Overall

1672

Males

1575

M18-39

1575

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

1958

Males

1841

M18-39

1841

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2223

Males

2063

M18-39

2063

Passing Analysis

Category:
Athletes Passed
2309
Passed By
320
Net Change
+1989
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5214
5K → 10K56334+529#5214#4685
10K → 15K13794+43#4685#4642
15K → 20K16254+108#4642#4534
20K → Half1941-22#4534#4556
Half → 25K15829+129#4556#4427
25K → 30K24318+225#4427#4202
30K → 20M12020+100#4202#4102
20M → 21M1865+181#4102#3921
21M → 35K915+86#3921#3835
35K → 23M2133+210#3835#3625
23M → 24M1363+133#3625#3492
24M → 40K1192+117#3492#3375
40K → 25.2M600+60#3375#3315
25.2M → Finish10212+90#3315#3225
TOTALS2309320+1989
📊

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