Boston Marathon logo
BOSTON MARATHON 2023

Kristofer Scarpa

Bib: 5129•M

NJ

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 15%
Gender (Male)
#0 / 15176
Top 25%
Division (M18-39)
#0 / 5285
Top 49%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:23
Rank: #5409
Start → 5K
21:23 | 6:53/mi
10K· 6.21 mi
42:24
Rank: #5150 (+259)
5K → 10K
21:01 | 6:46/mi
15K· 9.32 mi
1:03:12
Rank: #4805 (+345)
10K → 15K
20:48 | 6:42/mi
20K· 12.43 mi
1:24:32
Rank: #4864 (-59)
15K → 20K
21:20 | 6:52/mi
Half· 13.11 mi
1:29:07
Rank: #4841 (+23)
20K → Half
4:35 | 6:43/mi
25K· 15.53 mi
1:45:35
Rank: #4663 (+178)
Half → 25K
16:28 | 6:47/mi
30K· 18.64 mi
2:07:30
Rank: #4664 (-1)
25K → 30K
21:55 | 7:03/mi
20M
2:17:04
Rank: #4608 (+56)
30K → 20M
9:34 | 7:02/mi
21M
2:24:26
Rank: #4558 (+50)
20M → 21M
7:22 | 7:22/mi
35K· 21.75 mi
2:29:16
Rank: #4426 (+132)
21M → 35K
4:50 | 6:28/mi
23M
2:37:46
Rank: #4252 (+174)
35K → 23M
8:30 | 6:47/mi
24M
2:44:29
Rank: #4222 (+30)
23M → 24M
6:43 | 6:43/mi
40K· 24.85 mi
2:50:23
Rank: #4152 (+70)
24M → 40K
5:54 | 6:54/mi
25.2M
2:52:52
Rank: #4111 (+41)
40K → 25.2M
2:29 | 7:12/mi
Finish· 26.22 mi
2:59:23
Rank: #3986 (+125)
25.2M → Finish
6:31 | 6:24/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:07
Pace6:48 /mi
2nd Half
Distance13.11 mi
Time1:30:16
Pace6:53 /mi
📊Positive Split: 1.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:3121:236:5321:23
6:53
-
10K
6.21 mi10:45:3242:246:4921:01
6:46
-0:07
15K
9.32 mi11:06:201:03:126:4720:48
6:42
-0:04
20K
12.43 mi11:27:401:24:326:4821:20
6:52
+0:10
Half
13.11 mi11:32:151:29:076:484:35
6:43
-0:09
25K
15.53 mi11:48:431:45:356:4816:28
6:47
+0:04
30K
18.64 mi12:10:382:07:306:5021:55
7:03
+0:16
20M
20.00 mi12:20:122:17:046:519:34
7:02
-0:01
21M
21.00 mi12:27:342:24:266:537:22
7:22
+0:20
35K
21.75 mi12:32:242:29:166:524:50
6:28
-0:54
23M
23.00 mi12:40:542:37:466:528:30
6:47
+0:19
24M
24.00 mi12:47:372:44:296:516:43
6:43
-0:04
40K
24.85 mi12:53:312:50:236:515:54
6:54
+0:11
25.2M
25.20 mi12:56:002:52:526:522:29
7:12
+0:18
Finish
26.22 mi13:02:312:59:236:516:31
6:24
-0:48

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

6:24 /mi

Average Pace

6:51 /mi

Slowest Pace

7:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:27:37

82% of race

Time at Steady Pace

31:46

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:50 /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 mi10:24:3121:236:5321:23
6:53
#5409
10K
6.21 mi10:45:3242:246:4921:01
6:46
#5150
15K
9.32 mi11:06:201:03:126:4720:48
6:42
#4805
20K
12.43 mi11:27:401:24:326:4821:20
6:52
#4864
Half
13.11 mi11:32:151:29:076:484:35
6:43
#4841
25K
15.53 mi11:48:431:45:356:4816:28
6:47
#4663
30K
18.64 mi12:10:382:07:306:5021:55
7:03
#4664
20M
20.00 mi12:20:122:17:046:519:34
7:02
#4608
21M
21.00 mi12:27:342:24:266:537:22
7:22
#4558
35K
21.75 mi12:32:242:29:166:524:50
6:28
#4426
23M
23.00 mi12:40:542:37:466:528:30
6:47
#4252
24M
24.00 mi12:47:372:44:296:516:43
6:43
#4222
40K
24.85 mi12:53:312:50:236:515:54
6:54
#4152
25.2M
25.20 mi12:56:002:52:526:522:29
7:12
#4111
Finish
26.22 mi13:02:312:59:236:516:31
6:24
#3986
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5409499449944078(Top 15%)3827(Top 25%)3827(Top 72%)
10K6.21 mi3.10 mi5150+2594770+2244770+2244936(Top 19%)4575(Top 30%)4575(Top 87%)
15K9.32 mi3.11 mi4805+3454469+3014469+3014078(Top 15%)3827(Top 25%)3827(Top 72%)
20K12.43 mi3.11 mi4864-594529-604529-605050(Top 19%)4673(Top 31%)4673(Top 88%)
Half13.11 mi0.68 mi4841+234508+214508+214484(Top 17%)4176(Top 28%)4176(Top 79%)
25K15.53 mi2.42 mi4663+1784343+1654343+1654074(Top 15%)3820(Top 25%)3820(Top 72%)
30K18.64 mi3.11 mi4664-14349-64349-64674(Top 18%)4315(Top 28%)4315(Top 82%)
20M20.00 mi1.36 mi4608+564296+534296+534259(Top 16%)3930(Top 26%)3930(Top 74%)
21M21.00 mi1.00 mi4558+504250+464250+463967(Top 15%)3659(Top 24%)3659(Top 69%)
35K21.75 mi0.75 mi4426+1324127+1234127+1232269(Top 9%)2156(Top 14%)2156(Top 41%)
23M23.00 mi1.25 mi4252+1743979+1483979+1482620(Top 10%)2461(Top 16%)2461(Top 47%)
24M24.00 mi1.00 mi4222+303952+273952+273217(Top 12%)2983(Top 20%)2983(Top 56%)
40K24.85 mi0.85 mi4152+703886+663886+663335(Top 13%)3051(Top 20%)3051(Top 58%)
25.2M25.20 mi0.35 mi4111+413848+383848+382566(Top 10%)2379(Top 16%)2379(Top 45%)
Finish26.22 mi1.02 mi3986+1253730+1183730+1182017(Top 8%)1882(Top 12%)1882(Top 36%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

4078

Males

3827

M18-39

3827

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

4936

Males

4575

M18-39

4575

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

4078

Males

3827

M18-39

3827

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

5050

Males

4673

M18-39

4673

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4484

Males

4176

M18-39

4176

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

4074

Males

3820

M18-39

3820

25K→30K

15.5 - 18.6 mi

Top 18%
×9stories
+181ft-148ft

Overall

4674

Males

4315

M18-39

4315

30K→20M

18.6 - 20.0 mi

Top 16%
×5stories
+64ft-50ft

Overall

4259

Males

3930

M18-39

3930

20M→21M

20.0 - 21.0 mi

Top 15%
×8stories
+106ft-24ft

Overall

3967

Males

3659

M18-39

3659

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2269

Males

2156

M18-39

2156

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2620

Males

2461

M18-39

2461

23M→24M

23.0 - 24.0 mi

Top 12%
×6stories
+12ft-82ft

Overall

3217

Males

2983

M18-39

2983

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3335

Males

3051

M18-39

3051

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2566

Males

2379

M18-39

2379

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2017

Males

1882

M18-39

1882

Passing Analysis

Category:
Athletes Passed
1977
Passed By
554
Net Change
+1423
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5409
5K → 10K34788+259#5409#5150
10K → 15K36217+345#5150#4805
15K → 20K84143-59#4805#4864
20K → Half3714+23#4864#4841
Half → 25K20123+178#4841#4663
25K → 30K124125-1#4663#4664
30K → 20M9438+56#4664#4608
20M → 21M8636+50#4608#4558
21M → 35K1331+132#4558#4426
35K → 23M1828+174#4426#4252
23M → 24M6434+30#4252#4222
24M → 40K8515+70#4222#4152
40K → 25.2M454+41#4152#4111
25.2M → Finish1338+125#4111#3986
TOTALS1977554+1423
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing