Boston Marathon logo
BOSTON MARATHON 2023

Robin Carpenter

Bib: 23584•M

MA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M65-69)
#0 / 549
Top 33%
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
9:12/mi
28:34
↑ 97↓ 3451.5%
10K· 6.21 mi
8:51/mi
56:03
↑ 79↓ 1380.4%
15K· 9.32 mi
8:31/mi
1:22:30
↑ 67↓ 78
20K· 12.43 mi
8:39/mi
1:49:23
↑ 106↓ 860.1%
Half· 13.11 mi
8:32/mi
1:55:12
↑ 19↓ 370.5%
25K· 15.53 mi
8:43/mi
2:16:19
↑ 66↓ 880.2%
30K· 18.64 mi
9:08/mi
2:44:41
↑ 181↓ 1480.2%
20M
9:18/mi
2:57:19
↑ 64↓ 500.2%
21M
9:36/mi
3:06:55
↑ 106↓ 241.6%
35K· 21.75 mi
8:52/mi
3:13:33
↑ 17↓ 861.7%
23M
9:04/mi
3:24:54
↑ 23↓ 630.6%
24M
8:54/mi
3:33:48
↓ 821.3%
40K· 24.85 mi
8:57/mi
3:41:27
↓ 200.3%
25.2M
9:37/mi
3:44:46
↑ 13↓ 160.2%
Finish· 26.22 mi
8:53/mi
3:53:49
↑ 22↓ 21

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
Time1:55:12
Pace8:47 /mi
2nd Half
Distance13.11 mi
Time1:58:37
Pace9:03 /mi
📊Positive Split: 3.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:1728:349:1228:34
9:12
-
10K
6.21 mi11:51:4656:039:0127:29
8:51
-0:21
15K
9.32 mi12:18:131:22:308:5126:27
8:31
-0:20
20K
12.43 mi12:45:061:49:238:4826:53
8:39
+0:08
Half
13.11 mi12:50:551:55:128:475:49
8:32
-0:07
25K
15.53 mi13:12:022:16:198:4721:07
8:43
+0:11
30K
18.64 mi13:40:242:44:418:5028:22
9:08
+0:25
20M
20.00 mi13:53:022:57:198:5212:38
9:18
+0:10
21M
21.00 mi14:02:383:06:558:549:36
9:36
+0:18
35K
21.75 mi14:09:163:13:338:546:38
8:52
-0:44
23M
23.00 mi14:20:373:24:548:5511:21
9:04
+0:12
24M
24.00 mi14:29:313:33:488:558:54
8:54
-0:10
40K
24.85 mi14:37:103:41:278:557:39
8:57
+0:03
25.2M
25.20 mi14:40:293:44:468:553:19
9:37
+0:40
Finish
26.22 mi14:49:323:53:498:559:03
8:53
-0:44

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

8:31 /mi

Average Pace

8:55 /mi

Slowest Pace

9:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:40:54

94% of race

Time at Steady Pace

12:55

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:55 /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 mi11:24:1728:349:1228:34
9:12
#21192
10K
6.21 mi11:51:4656:039:0127:29
8:51
#20717
15K
9.32 mi12:18:131:22:308:5126:27
8:31
#19873
20K
12.43 mi12:45:061:49:238:4826:53
8:39
#19322
Half
13.11 mi12:50:551:55:128:475:49
8:32
#19252
25K
15.53 mi13:12:022:16:198:4721:07
8:43
#18968
30K
18.64 mi13:40:242:44:418:5028:22
9:08
#18760
20M
20.00 mi13:53:022:57:198:5212:38
9:18
#18706
21M
21.00 mi14:02:383:06:558:549:36
9:36
#18555
35K
21.75 mi14:09:163:13:338:546:38
8:52
#18489
23M
23.00 mi14:20:373:24:548:5511:21
9:04
#18352
24M
24.00 mi14:29:313:33:488:558:54
8:54
#18280
40K
24.85 mi14:37:103:41:278:557:39
8:57
#18199
25.2M
25.20 mi14:40:293:44:468:553:19
9:37
#18172
Finish
26.22 mi14:49:323:53:498:559:03
8:53
#18142
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi21192127011270117896(Top 67%)11440(Top 75%)11440(Top 2084%)
10K6.21 mi3.10 mi20717+47512542+15912542+15920158(Top 76%)12343(Top 81%)12343(Top 2248%)
15K9.32 mi3.11 mi19873+84412185+35712185+35717896(Top 67%)11440(Top 75%)11440(Top 2084%)
20K12.43 mi3.11 mi19322+55111981+20411981+20417816(Top 67%)11390(Top 75%)11390(Top 2075%)
Half13.11 mi0.68 mi19252+7011963+1811963+1817824(Top 67%)11430(Top 75%)11430(Top 2082%)
25K15.53 mi2.42 mi18968+28411846+11711846+11717419(Top 65%)11164(Top 74%)11164(Top 2034%)
30K18.64 mi3.11 mi18760+20811733+11311733+11317830(Top 67%)11266(Top 74%)11266(Top 2052%)
20M20.00 mi1.36 mi18706+5411700+3311700+3317997(Top 68%)11232(Top 74%)11232(Top 2046%)
21M21.00 mi1.00 mi18555+15111628+7211628+7216410(Top 62%)10535(Top 69%)10535(Top 1919%)
35K21.75 mi0.75 mi18489+6611586+4211586+4217266(Top 65%)10823(Top 71%)10823(Top 1971%)
23M23.00 mi1.25 mi18352+13711512+7411512+7416373(Top 62%)10401(Top 69%)10401(Top 1895%)
24M24.00 mi1.00 mi18280+7211471+4111471+4116760(Top 63%)10515(Top 69%)10515(Top 1915%)
40K24.85 mi0.85 mi18199+8111423+4811423+4815848(Top 60%)10069(Top 66%)10069(Top 1834%)
25.2M25.20 mi0.35 mi18172+2711409+1411409+1415718(Top 59%)10006(Top 66%)10006(Top 1823%)
Finish26.22 mi1.02 mi18142+3011390+1911390+1917402(Top 65%)10794(Top 71%)10794(Top 1966%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21story building
+97ft-345ft

Overall

17896

Males

11440

M65-69

11440

5K→10K

3.1 - 6.2 mi

Top 76%
×5story building
+79ft-138ft

Overall

20158

Males

12343

M65-69

12343

10K→15K

6.2 - 9.3 mi

Top 67%
×3story building
+67ft-78ft

Overall

17896

Males

11440

M65-69

11440

15K→20K

9.3 - 12.4 mi

Top 67%
×5story building
+106ft-86ft

Overall

17816

Males

11390

M65-69

11390

20K→Half

12.4 - 13.1 mi

Top 67%
×2story building
+19ft-37ft

Overall

17824

Males

11430

M65-69

11430

Half→25K

13.1 - 15.5 mi

Top 65%
×4story building
+66ft-88ft

Overall

17419

Males

11164

M65-69

11164

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

17830

Males

11266

M65-69

11266

30K→20M

18.6 - 20.0 mi

Top 68%
×5story building
+64ft-50ft

Overall

17997

Males

11232

M65-69

11232

20M→21M

20.0 - 21.0 mi

Top 62%
×8story building
+106ft-24ft

Overall

16410

Males

10535

M65-69

10535

21M→35K

21.0 - 21.8 mi

Top 65%
×7story building
+17ft-86ft

Overall

17266

Males

10823

M65-69

10823

35K→23M

21.8 - 23.0 mi

Top 62%
×5story building
+23ft-63ft

Overall

16373

Males

10401

M65-69

10401

23M→24M

23.0 - 24.0 mi

Top 63%
×6story building
+12ft-82ft

Overall

16760

Males

10515

M65-69

10515

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

15848

Males

10069

M65-69

10069

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

15718

Males

10006

M65-69

10006

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2story building
+22ft-21ft

Overall

17402

Males

10794

M65-69

10794

Passing Analysis

Category:
Athletes Passed
3465
Passed By
415
Net Change
+3050
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21192
5K → 10K594119+475#21192#20717
10K → 15K8517+844#20717#19873
15K → 20K56211+551#19873#19322
20K → Half744+70#19322#19252
Half → 25K29511+284#19252#18968
25K → 30K27365+208#18968#18760
30K → 20M11157+54#18760#18706
20M → 21M17322+151#18706#18555
21M → 35K8115+66#18555#18489
35K → 23M15922+137#18489#18352
23M → 24M9119+72#18352#18280
24M → 40K9615+81#18280#18199
40K → 25.2M3710+27#18199#18172
25.2M → Finish6838+30#18172#18142
TOTALS3465415+3050
📊

Passing Visuals

Category:
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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing