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BOSTON MARATHON 2023

Brian Alongi

Bib: 8572•M

TX

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 32%
Gender (Male)
#0 / 15176
Top 47%
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:24/mi
22:58
↑ 97↓ 3451.5%
10K· 6.21 mi
7:06/mi
45:00
↑ 79↓ 1380.4%
15K· 9.32 mi
7:07/mi
1:07:07
↑ 67↓ 78
20K· 12.43 mi
7:34/mi
1:30:39
↑ 106↓ 860.1%
Half· 13.11 mi
7:17/mi
1:35:37
↑ 19↓ 370.5%
25K· 15.53 mi
7:51/mi
1:54:40
↑ 66↓ 880.2%
30K· 18.64 mi
8:13/mi
2:20:13
↑ 181↓ 1480.2%
20M
8:07/mi
2:31:15
↑ 64↓ 500.2%
21M
8:01/mi
2:39:16
↑ 106↓ 241.6%
35K· 21.75 mi
7:30/mi
2:44:53
↑ 17↓ 861.7%
23M
7:32/mi
2:54:19
↑ 23↓ 630.6%
24M
7:16/mi
3:01:35
↓ 821.3%
40K· 24.85 mi
7:07/mi
3:07:40
↓ 200.3%
25.2M
7:41/mi
3:10:19
↑ 13↓ 160.2%
Finish· 26.22 mi
7:26/mi
3:17:54
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:37
Pace7:18 /mi
2nd Half
Distance13.11 mi
Time1:42:17
Pace7:48 /mi
📊Positive Split: 7.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:2122:587:2422:58
7:24
-
10K
6.21 mi11:10:2345:007:1522:02
7:06
-0:18
15K
9.32 mi11:32:301:07:077:1222:07
7:07
+0:01
20K
12.43 mi11:56:021:30:397:1823:32
7:34
+0:27
Half
13.11 mi12:01:001:35:377:184:58
7:17
-0:17
25K
15.53 mi12:20:031:54:407:2319:03
7:51
+0:34
30K
18.64 mi12:45:362:20:137:3125:33
8:13
+0:22
20M
20.00 mi12:56:382:31:157:3411:02
8:07
-0:06
21M
21.00 mi13:04:392:39:167:358:01
8:01
-0:06
35K
21.75 mi13:10:162:44:537:355:37
7:30
-0:31
23M
23.00 mi13:19:422:54:197:359:26
7:32
+0:02
24M
24.00 mi13:26:583:01:357:347:16
7:16
-0:16
40K
24.85 mi13:33:033:07:407:336:05
7:07
-0:09
25.2M
25.20 mi13:35:423:10:197:332:39
7:41
+0:34
Finish
26.22 mi13:43:173:17:547:337:35
7:26
-0:15

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

7:06 /mi

Average Pace

7:33 /mi

Slowest Pace

8:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:14:15

68% of race

Time at Steady Pace

1:03:39

32% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:33 /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 mi10:48:2122:587:2422:58
7:24
#8760
10K
6.21 mi11:10:2345:007:1522:02
7:06
#8046
15K
9.32 mi11:32:301:07:077:1222:07
7:07
#7754
20K
12.43 mi11:56:021:30:397:1823:32
7:34
#8204
Half
13.11 mi12:01:001:35:377:184:58
7:17
#8210
25K
15.53 mi12:20:031:54:407:2319:03
7:51
#8687
30K
18.64 mi12:45:362:20:137:3125:33
8:13
#9326
20M
20.00 mi12:56:382:31:157:3411:02
8:07
#9464
21M
21.00 mi13:04:392:39:167:358:01
8:01
#9289
35K
21.75 mi13:10:162:44:537:355:37
7:30
#9252
23M
23.00 mi13:19:422:54:197:359:26
7:32
#9068
24M
24.00 mi13:26:583:01:357:347:16
7:16
#8905
40K
24.85 mi13:33:033:07:407:336:05
7:07
#8700
25.2M
25.20 mi13:35:423:10:197:332:39
7:41
#8619
Finish
26.22 mi13:43:173:17:547:337:35
7:26
#8589
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi8760745374537264(Top 27%)6435(Top 42%)6435(Top 122%)
10K6.21 mi3.10 mi8046+7146990+4636990+4637396(Top 28%)6529(Top 43%)6529(Top 124%)
15K9.32 mi3.11 mi7754+2926796+1946796+1947264(Top 27%)6435(Top 42%)6435(Top 122%)
20K12.43 mi3.11 mi8204-4507074-2787074-2789881(Top 37%)8003(Top 53%)8003(Top 151%)
Half13.11 mi0.68 mi8210-6707470748423(Top 32%)7162(Top 47%)7162(Top 136%)
25K15.53 mi2.42 mi8687-4777349-2757349-27511551(Top 43%)8729(Top 58%)8729(Top 165%)
30K18.64 mi3.11 mi9326-6397697-3487697-34812485(Top 47%)9010(Top 59%)9010(Top 170%)
20M20.00 mi1.36 mi9464-1387759-627759-6211121(Top 42%)8305(Top 55%)8305(Top 157%)
21M21.00 mi1.00 mi9289+1757625+1347625+1347447(Top 28%)6151(Top 41%)6151(Top 116%)
35K21.75 mi0.75 mi9252+377589+367589+368568(Top 32%)6842(Top 45%)6842(Top 129%)
23M23.00 mi1.25 mi9068+1847459+1307459+1306631(Top 25%)5598(Top 37%)5598(Top 106%)
24M24.00 mi1.00 mi8905+1637333+1267333+1266152(Top 23%)5199(Top 34%)5199(Top 98%)
40K24.85 mi0.85 mi8700+2057195+1387195+1384468(Top 17%)3969(Top 26%)3969(Top 75%)
25.2M25.20 mi0.35 mi8619+817145+507145+504829(Top 18%)4182(Top 28%)4182(Top 79%)
Finish26.22 mi1.02 mi8589+307102+437102+438068(Top 30%)6204(Top 41%)6204(Top 117%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21story building
+97ft-345ft

Overall

7264

Males

6435

M18-39

6435

5K→10K

3.1 - 6.2 mi

Top 28%
×5story building
+79ft-138ft

Overall

7396

Males

6529

M18-39

6529

10K→15K

6.2 - 9.3 mi

Top 27%
×3story building
+67ft-78ft

Overall

7264

Males

6435

M18-39

6435

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

9881

Males

8003

M18-39

8003

20K→Half

12.4 - 13.1 mi

Top 32%
×2story building
+19ft-37ft

Overall

8423

Males

7162

M18-39

7162

Half→25K

13.1 - 15.5 mi

Top 43%
×4story building
+66ft-88ft

Overall

11551

Males

8729

M18-39

8729

25K→30K

15.5 - 18.6 mi

Top 47%
×9story building
+181ft-148ft

Overall

12485

Males

9010

M18-39

9010

30K→20M

18.6 - 20.0 mi

Top 42%
×5story building
+64ft-50ft

Overall

11121

Males

8305

M18-39

8305

20M→21M

20.0 - 21.0 mi

Top 28%
×8story building
+106ft-24ft

Overall

7447

Males

6151

M18-39

6151

21M→35K

21.0 - 21.8 mi

Top 32%
×7story building
+17ft-86ft

Overall

8568

Males

6842

M18-39

6842

35K→23M

21.8 - 23.0 mi

Top 25%
×5story building
+23ft-63ft

Overall

6631

Males

5598

M18-39

5598

23M→24M

23.0 - 24.0 mi

Top 23%
×6story building
+12ft-82ft

Overall

6152

Males

5199

M18-39

5199

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4468

Males

3969

M18-39

3969

40K→25.2M

24.9 - 25.2 mi

Top 18%
×1story
+13ft-16ft

Overall

4829

Males

4182

M18-39

4182

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2story building
+22ft-21ft

Overall

8068

Males

6204

M18-39

6204

Passing Analysis

Category:
Athletes Passed
2226
Passed By
2055
Net Change
+171
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8760
5K → 10K75844+714#8760#8046
10K → 15K32331+292#8046#7754
15K → 20K30480-450#7754#8204
20K → Half2026-6#8204#8210
Half → 25K23500-477#8210#8687
25K → 30K49688-639#8687#9326
30K → 20M46184-138#9326#9464
20M → 21M18712+175#9464#9289
21M → 35K6124+37#9289#9252
35K → 23M19410+184#9252#9068
23M → 24M17310+163#9068#8905
24M → 40K2061+205#8905#8700
40K → 25.2M821+81#8700#8619
25.2M → Finish7444+30#8619#8589
TOTALS22262055+171
📊

Passing Visuals

Category:
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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