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BOSTON MARATHON 2023

George Sacco

Bib: 25378•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
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
8:57/mi
27:47
↑ 97↓ 3451.5%
10K· 6.21 mi
8:20/mi
53:40
↑ 79↓ 1380.4%
15K· 9.32 mi
8:52/mi
1:21:13
↑ 67↓ 78
20K· 12.43 mi
8:41/mi
1:48:11
↑ 106↓ 860.1%
Half· 13.11 mi
8:39/mi
1:54:05
↑ 19↓ 370.5%
25K· 15.53 mi
8:43/mi
2:15:13
↑ 66↓ 880.2%
30K· 18.64 mi
8:57/mi
2:43:02
↑ 181↓ 1480.2%
20M
8:59/mi
2:55:14
↑ 64↓ 500.2%
21M
9:10/mi
3:04:24
↑ 106↓ 241.6%
35K· 21.75 mi
8:49/mi
3:11:00
↑ 17↓ 861.7%
23M
9:07/mi
3:22:25
↑ 23↓ 630.6%
24M
8:49/mi
3:31:14
↓ 821.3%
40K· 24.85 mi
8:54/mi
3:38:51
↓ 200.3%
25.2M
9:46/mi
3:42:13
↑ 13↓ 160.2%
Finish· 26.22 mi
8:24/mi
3:50:47
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:05
Pace8:42 /mi
2nd Half
Distance13.11 mi
Time1:56:42
Pace8:54 /mi
📊Positive Split: 2.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:0427:478:5727:47
8:57
-
10K
6.21 mi12:09:5753:408:3825:53
8:20
-0:37
15K
9.32 mi12:37:301:21:138:4327:33
8:52
+0:32
20K
12.43 mi13:04:281:48:118:4226:58
8:41
-0:11
Half
13.11 mi13:10:221:54:058:425:54
8:39
-0:02
25K
15.53 mi13:31:302:15:138:4221:08
8:43
+0:04
30K
18.64 mi13:59:192:43:028:4527:49
8:57
+0:14
20M
20.00 mi14:11:312:55:148:4612:12
8:59
+0:02
21M
21.00 mi14:20:413:04:248:479:10
9:10
+0:11
35K
21.75 mi14:27:173:11:008:476:36
8:49
-0:21
23M
23.00 mi14:38:423:22:258:4811:25
9:07
+0:18
24M
24.00 mi14:47:313:31:148:488:49
8:49
-0:18
40K
24.85 mi14:55:083:38:518:487:37
8:54
+0:05
25.2M
25.20 mi14:58:303:42:138:493:22
9:46
+0:52
Finish
26.22 mi15:07:043:50:478:498:34
8:24
-1:22

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

8:20 /mi

Average Pace

8:49 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:38:15

95% of race

Time at Steady Pace

12:32

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:48 /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 mi11:44:0427:478:5727:47
8:57
#20171
10K
6.21 mi12:09:5753:408:3825:53
8:20
#18721
15K
9.32 mi12:37:301:21:138:4327:33
8:52
#19119
20K
12.43 mi13:04:281:48:118:4226:58
8:41
#18819
Half
13.11 mi13:10:221:54:058:425:54
8:39
#18796
25K
15.53 mi13:31:302:15:138:4221:08
8:43
#18597
30K
18.64 mi13:59:192:43:028:4527:49
8:57
#18253
20M
20.00 mi14:11:312:55:148:4612:12
8:59
#18104
21M
21.00 mi14:20:413:04:248:479:10
9:10
#17867
35K
21.75 mi14:27:173:11:008:476:36
8:49
#17838
23M
23.00 mi14:38:423:22:258:4811:25
9:07
#17774
24M
24.00 mi14:47:313:31:148:488:49
8:49
#17716
40K
24.85 mi14:55:083:38:518:487:37
8:54
#17652
25.2M
25.20 mi14:58:303:42:138:493:22
9:46
#17627
Finish
26.22 mi15:07:043:50:478:498:34
8:24
#17516
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi20171122241222419865(Top 75%)12232(Top 81%)12232(Top 231%)
10K6.21 mi3.10 mi18721+145011740+48411740+48417123(Top 64%)11155(Top 74%)11155(Top 211%)
15K9.32 mi3.11 mi19119-39811894-15411894-15419865(Top 75%)12232(Top 81%)12232(Top 231%)
20K12.43 mi3.11 mi18819+30011786+10811786+10817982(Top 68%)11461(Top 76%)11461(Top 217%)
Half13.11 mi0.68 mi18796+2311774+1211774+1218555(Top 70%)11716(Top 77%)11716(Top 222%)
25K15.53 mi2.42 mi18597+19911684+9011684+9017458(Top 66%)11179(Top 74%)11179(Top 212%)
30K18.64 mi3.11 mi18253+34411514+17011514+17016923(Top 64%)10881(Top 72%)10881(Top 206%)
20M20.00 mi1.36 mi18104+14911438+7611438+7616401(Top 62%)10572(Top 70%)10572(Top 200%)
21M21.00 mi1.00 mi17867+23711332+10611332+10614297(Top 54%)9630(Top 63%)9630(Top 182%)
35K21.75 mi0.75 mi17838+2911312+2011312+2017031(Top 64%)10723(Top 71%)10723(Top 203%)
23M23.00 mi1.25 mi17774+6411269+4311269+4316614(Top 62%)10507(Top 69%)10507(Top 199%)
24M24.00 mi1.00 mi17716+5811234+3511234+3516278(Top 61%)10302(Top 68%)10302(Top 195%)
40K24.85 mi0.85 mi17652+6411197+3711197+3715655(Top 59%)9981(Top 66%)9981(Top 189%)
25.2M25.20 mi0.35 mi17627+2511178+1911178+1916341(Top 61%)10264(Top 68%)10264(Top 194%)
Finish26.22 mi1.02 mi17516+11111122+5611122+5614776(Top 56%)9627(Top 63%)9627(Top 182%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21story building
+97ft-345ft

Overall

19865

Males

12232

M18-39

12232

5K→10K

3.1 - 6.2 mi

Top 64%
×5story building
+79ft-138ft

Overall

17123

Males

11155

M18-39

11155

10K→15K

6.2 - 9.3 mi

Top 75%
×3story building
+67ft-78ft

Overall

19865

Males

12232

M18-39

12232

15K→20K

9.3 - 12.4 mi

Top 68%
×5story building
+106ft-86ft

Overall

17982

Males

11461

M18-39

11461

20K→Half

12.4 - 13.1 mi

Top 70%
×2story building
+19ft-37ft

Overall

18555

Males

11716

M18-39

11716

Half→25K

13.1 - 15.5 mi

Top 66%
×4story building
+66ft-88ft

Overall

17458

Males

11179

M18-39

11179

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

16923

Males

10881

M18-39

10881

30K→20M

18.6 - 20.0 mi

Top 62%
×5story building
+64ft-50ft

Overall

16401

Males

10572

M18-39

10572

20M→21M

20.0 - 21.0 mi

Top 54%
×8story building
+106ft-24ft

Overall

14297

Males

9630

M18-39

9630

21M→35K

21.0 - 21.8 mi

Top 64%
×7story building
+17ft-86ft

Overall

17031

Males

10723

M18-39

10723

35K→23M

21.8 - 23.0 mi

Top 62%
×5story building
+23ft-63ft

Overall

16614

Males

10507

M18-39

10507

23M→24M

23.0 - 24.0 mi

Top 61%
×6story building
+12ft-82ft

Overall

16278

Males

10302

M18-39

10302

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

15655

Males

9981

M18-39

9981

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

16341

Males

10264

M18-39

10264

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2story building
+22ft-21ft

Overall

14776

Males

9627

M18-39

9627

Passing Analysis

Category:
Athletes Passed
3497
Passed By
842
Net Change
+2655
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20171
5K → 10K149242+1450#20171#18721
10K → 15K72470-398#18721#19119
15K → 20K34444+300#19119#18819
20K → Half3815+23#18819#18796
Half → 25K23334+199#18796#18597
25K → 30K37632+344#18597#18253
30K → 20M17021+149#18253#18104
20M → 21M2447+237#18104#17867
21M → 35K6233+29#17867#17838
35K → 23M11955+64#17838#17774
23M → 24M9436+58#17774#17716
24M → 40K8622+64#17716#17652
40K → 25.2M4116+25#17652#17627
25.2M → Finish12615+111#17627#17516
TOTALS3497842+2655
📊

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