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BOSTON MARATHON 2023

Alexander Pollack

Bib: 2539•M

MI

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 13%
Gender (Male)
#0 / 15176
Top 21%
Division (M18-39)
#0 / 5285
Top 45%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:22
Rank: #2581
Start → 5K
20:22 | 6:33/mi
10K· 6.21 mi
40:15
Rank: #2376 (+205)
5K → 10K
19:53 | 6:24/mi
15K· 9.32 mi
59:58
Rank: #2171 (+205)
10K → 15K
19:43 | 6:21/mi
20K· 12.43 mi
1:19:44
Rank: #2014 (+157)
15K → 20K
19:46 | 6:22/mi
Half· 13.11 mi
1:24:06
Rank: #2020 (-6)
20K → Half
4:22 | 6:24/mi
25K· 15.53 mi
1:39:48
Rank: #2020
Half → 25K
15:42 | 6:29/mi
30K· 18.64 mi
2:01:04
Rank: #2207 (-187)
25K → 30K
21:16 | 6:51/mi
20M
2:10:41
Rank: #2315 (-108)
30K → 20M
9:37 | 7:05/mi
21M
2:18:22
Rank: #2426 (-111)
20M → 21M
7:41 | 7:41/mi
35K· 21.75 mi
2:24:03
Rank: #2590 (-164)
21M → 35K
5:41 | 7:36/mi
23M
2:33:23
Rank: #2779 (-189)
35K → 23M
9:20 | 7:27/mi
24M
2:40:47
Rank: #2969 (-190)
23M → 24M
7:24 | 7:24/mi
40K· 24.85 mi
2:47:24
Rank: #3163 (-194)
24M → 40K
6:37 | 7:44/mi
25.2M
2:50:19
Rank: #3259 (-96)
40K → 25.2M
2:55 | 8:27/mi
Finish· 26.22 mi
2:57:52
Rank: #3445 (-186)
25.2M → Finish
7:33 | 7:25/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:24:06
Pace6:25 /mi
2nd Half
Distance13.11 mi
Time1:33:46
Pace7:09 /mi
📊Positive Split: 11.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:3220:226:3320:22
6:33
-
10K
6.21 mi10:41:2540:156:2919:53
6:24
-0:09
15K
9.32 mi11:01:0859:586:2619:43
6:21
-0:03
20K
12.43 mi11:20:541:19:446:2519:46
6:22
+0:01
Half
13.11 mi11:25:161:24:066:254:22
6:24
+0:02
25K
15.53 mi11:40:581:39:486:2515:42
6:29
+0:05
30K
18.64 mi12:02:142:01:046:3021:16
6:51
+0:22
20M
20.00 mi12:11:512:10:416:329:37
7:05
+0:14
21M
21.00 mi12:19:322:18:226:357:41
7:41
+0:36
35K
21.75 mi12:25:132:24:036:375:41
7:36
-0:05
23M
23.00 mi12:34:332:33:236:409:20
7:27
-0:09
24M
24.00 mi12:41:572:40:476:427:24
7:24
-0:03
40K
24.85 mi12:48:342:47:246:446:37
7:44
+0:20
25.2M
25.20 mi12:51:292:50:196:462:55
8:27
+0:43
Finish
26.22 mi12:59:022:57:526:477:33
7:25
-1:02

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

6:21 /mi

Average Pace

6:47 /mi

Slowest Pace

8:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:48

56% of race

Time at Steady Pace

30:53

17% of race

Time at Slower Pace

47:11

27% of race

Average Pace: 6:47 /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 mi10:21:3220:226:3320:22
6:33
#2581
10K
6.21 mi10:41:2540:156:2919:53
6:24
#2376
15K
9.32 mi11:01:0859:586:2619:43
6:21
#2171
20K
12.43 mi11:20:541:19:446:2519:46
6:22
#2014
Half
13.11 mi11:25:161:24:066:254:22
6:24
#2020
25K
15.53 mi11:40:581:39:486:2515:42
6:29
#2020
30K
18.64 mi12:02:142:01:046:3021:16
6:51
#2207
20M
20.00 mi12:11:512:10:416:329:37
7:05
#2315
21M
21.00 mi12:19:322:18:226:357:41
7:41
#2426
35K
21.75 mi12:25:132:24:036:375:41
7:36
#2590
23M
23.00 mi12:34:332:33:236:409:20
7:27
#2779
24M
24.00 mi12:41:572:40:476:427:24
7:24
#2969
40K
24.85 mi12:48:342:47:246:446:37
7:44
#3163
25.2M
25.20 mi12:51:292:50:196:462:55
8:27
#3259
Finish
26.22 mi12:59:022:57:526:477:33
7:25
#3445
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2581246024601863(Top 7%)1785(Top 12%)1785(Top 34%)
10K6.21 mi3.10 mi2376+2052268+1922268+1922250(Top 8%)2153(Top 14%)2153(Top 41%)
15K9.32 mi3.11 mi2171+2052082+1862082+1861863(Top 7%)1785(Top 12%)1785(Top 34%)
20K12.43 mi3.11 mi2014+1571927+1551927+1551652(Top 6%)1581(Top 10%)1581(Top 30%)
Half13.11 mi0.68 mi2020-61936-91936-92264(Top 9%)2174(Top 14%)2174(Top 41%)
25K15.53 mi2.42 mi20201937-11937-12066(Top 8%)1980(Top 13%)1980(Top 37%)
30K18.64 mi3.11 mi2207-1872117-1802117-1803288(Top 12%)3098(Top 20%)3098(Top 59%)
20M20.00 mi1.36 mi2315-1082222-1052222-1054450(Top 17%)4091(Top 27%)4091(Top 77%)
21M21.00 mi1.00 mi2426-1112324-1022324-1025492(Top 21%)4818(Top 32%)4818(Top 91%)
35K21.75 mi0.75 mi2590-1642476-1522476-1529170(Top 34%)7147(Top 47%)7147(Top 135%)
23M23.00 mi1.25 mi2779-1892651-1752651-1756143(Top 23%)5272(Top 35%)5272(Top 100%)
24M24.00 mi1.00 mi2969-1902821-1702821-1707007(Top 26%)5703(Top 38%)5703(Top 108%)
40K24.85 mi0.85 mi3163-1942995-1742995-1748176(Top 31%)6340(Top 42%)6340(Top 120%)
25.2M25.20 mi0.35 mi3259-963083-883083-889113(Top 34%)6773(Top 45%)6773(Top 128%)
Finish26.22 mi1.02 mi3445-1863248-1653248-1657807(Top 29%)6042(Top 40%)6042(Top 114%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×21stories
+97ft-345ft

Overall

1863

Males

1785

M18-39

1785

5K→10K

3.1 - 6.2 mi

Top 8%
×5stories
+79ft-138ft

Overall

2250

Males

2153

M18-39

2153

10K→15K

6.2 - 9.3 mi

Top 7%
×3stories
+67ft-78ft

Overall

1863

Males

1785

M18-39

1785

15K→20K

9.3 - 12.4 mi

Top 6%
×5stories
+106ft-86ft

Overall

1652

Males

1581

M18-39

1581

20K→Half

12.4 - 13.1 mi

Top 9%
×2stories
+19ft-37ft

Overall

2264

Males

2174

M18-39

2174

Half→25K

13.1 - 15.5 mi

Top 8%
×4stories
+66ft-88ft

Overall

2066

Males

1980

M18-39

1980

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3288

Males

3098

M18-39

3098

30K→20M

18.6 - 20.0 mi

Top 17%
×5stories
+64ft-50ft

Overall

4450

Males

4091

M18-39

4091

20M→21M

20.0 - 21.0 mi

Top 21%
×8stories
+106ft-24ft

Overall

5492

Males

4818

M18-39

4818

21M→35K

21.0 - 21.8 mi

Top 34%
×7stories
+17ft-86ft

Overall

9170

Males

7147

M18-39

7147

35K→23M

21.8 - 23.0 mi

Top 23%
×5stories
+23ft-63ft

Overall

6143

Males

5272

M18-39

5272

23M→24M

23.0 - 24.0 mi

Top 26%
×6stories
+12ft-82ft

Overall

7007

Males

5703

M18-39

5703

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8176

Males

6340

M18-39

6340

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

9113

Males

6773

M18-39

6773

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2stories
+22ft-21ft

Overall

7807

Males

6042

M18-39

6042

Passing Analysis

Category:
Athletes Passed
790
Passed By
1654
Net Change
-864
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2581
5K → 10K26156+205#2581#2376
10K → 15K22015+205#2376#2171
15K → 20K1658+157#2171#2014
20K → Half713-6#2014#2020
Half → 25K45450#2020#2020
25K → 30K20207-187#2020#2207
30K → 20M17125-108#2207#2315
20M → 21M7118-111#2315#2426
21M → 35K4168-164#2426#2590
35K → 23M13202-189#2590#2779
23M → 24M9199-190#2779#2969
24M → 40K8202-194#2969#3163
40K → 25.2M5101-96#3163#3259
25.2M → Finish9195-186#3259#3445
TOTALS7901654-864
📊

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