Boston Marathon logo
BOSTON MARATHON 2023

Brenton Carson

Bib: 3011•M

VA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 6%
Gender (Male)
#0 / 15176
Top 10%
Division (M18-39)
#0 / 5285
Top 24%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:22
Rank: #2571
Start → 5K
6:33/mi
20:22 split
10K· 6.21 mi
40:17
Rank: #2397 (+174)
5K → 10K
6:25/mi
19:55 split
15K· 9.32 mi
59:57
Rank: #2162 (+235)
10K → 15K
6:20/mi
19:40 split
20K· 12.43 mi
1:19:55
Rank: #2087 (+75)
15K → 20K
6:26/mi
19:58 split
Half· 13.11 mi
1:24:12
Rank: #2055 (+32)
20K → Half
6:17/mi
4:17 split
25K· 15.53 mi
1:39:54
Rank: #2050 (+5)
Half → 25K
6:29/mi
15:42 split
30K· 18.64 mi
2:00:27
Rank: #2027 (+23)
25K → 30K
6:37/mi
20:33 split
20M
2:09:19
Rank: #1959 (+68)
30K → 20M
6:31/mi
8:52 split
21M
2:15:57
Rank: #1878 (+81)
20M → 21M
6:38/mi
6:38 split
35K· 21.75 mi
2:20:37
Rank: #1849 (+29)
21M → 35K
6:14/mi
4:40 split
23M
2:28:46
Rank: #1795 (+54)
35K → 23M
6:31/mi
8:09 split
24M
2:35:24
Rank: #1814 (-19)
23M → 24M
6:38/mi
6:38 split
40K· 24.85 mi
2:40:52
Rank: #1761 (+53)
24M → 40K
6:24/mi
5:28 split
25.2M
2:43:12
Rank: #1743 (+18)
40K → 25.2M
6:46/mi
2:20 split
Finish· 26.22 mi
2:49:20
Rank: #1666 (+77)
25.2M → Finish
6:01/mi
6:08 split

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
Time1:24:12
Pace6:25 /mi
2nd Half
Distance13.11 mi
Time1:25:08
Pace6:30 /mi
📊Positive Split: 1.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:3320:226:3320:22
6:33
-
10K
6.21 mi10:41:2840:176:2919:55
6:25
-0:08
15K
9.32 mi11:01:0859:576:2619:40
6:20
-0:05
20K
12.43 mi11:21:061:19:556:2619:58
6:26
+0:06
Half
13.11 mi11:25:231:24:126:254:17
6:17
-0:09
25K
15.53 mi11:41:051:39:546:2615:42
6:29
+0:12
30K
18.64 mi12:01:382:00:276:2820:33
6:37
+0:08
20M
20.00 mi12:10:302:09:196:288:52
6:31
-0:06
21M
21.00 mi12:17:082:15:576:286:38
6:38
+0:07
35K
21.75 mi12:21:482:20:376:284:40
6:14
-0:24
23M
23.00 mi12:29:572:28:466:288:09
6:31
+0:17
24M
24.00 mi12:36:352:35:246:296:38
6:38
+0:07
40K
24.85 mi12:42:032:40:526:285:28
6:24
-0:14
25.2M
25.20 mi12:44:232:43:126:292:20
6:46
+0:22
Finish
26.22 mi12:50:312:49:206:286:08
6:01
-0:45

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

6:01 /mi

Average Pace

6:28 /mi

Slowest Pace

6:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:33:44

91% of race

Time at Steady Pace

15:36

9% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:27 /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 mi10:21:3320:226:3320:22
6:33
#2571
10K
6.21 mi10:41:2840:176:2919:55
6:25
#2397
15K
9.32 mi11:01:0859:576:2619:40
6:20
#2162
20K
12.43 mi11:21:061:19:556:2619:58
6:26
#2087
Half
13.11 mi11:25:231:24:126:254:17
6:17
#2055
25K
15.53 mi11:41:051:39:546:2615:42
6:29
#2050
30K
18.64 mi12:01:382:00:276:2820:33
6:37
#2027
20M
20.00 mi12:10:302:09:196:288:52
6:31
#1959
21M
21.00 mi12:17:082:15:576:286:38
6:38
#1878
35K
21.75 mi12:21:482:20:376:284:40
6:14
#1849
23M
23.00 mi12:29:572:28:466:288:09
6:31
#1795
24M
24.00 mi12:36:352:35:246:296:38
6:38
#1814
40K
24.85 mi12:42:032:40:526:285:28
6:24
#1761
25.2M
25.20 mi12:44:232:43:126:292:20
6:46
#1743
Finish
26.22 mi12:50:312:49:206:286:08
6:01
#1666
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2571245024501781(Top 7%)1705(Top 11%)1705(Top 32%)
10K6.21 mi3.10 mi2397+1742288+1622288+1622286(Top 9%)2187(Top 14%)2187(Top 41%)
15K9.32 mi3.11 mi2162+2352073+2152073+2151781(Top 7%)1705(Top 11%)1705(Top 32%)
20K12.43 mi3.11 mi2087+751999+741999+741907(Top 7%)1830(Top 12%)1830(Top 35%)
Half13.11 mi0.68 mi2055+321968+311968+311698(Top 6%)1628(Top 11%)1628(Top 31%)
25K15.53 mi2.42 mi2050+51965+31965+32041(Top 8%)1955(Top 13%)1955(Top 37%)
30K18.64 mi3.11 mi2027+231944+211944+212008(Top 8%)1921(Top 13%)1921(Top 36%)
20M20.00 mi1.36 mi1959+681876+681876+681538(Top 6%)1466(Top 10%)1466(Top 28%)
21M21.00 mi1.00 mi1878+811798+781798+78947(Top 4%)899(Top 6%)899(Top 17%)
35K21.75 mi0.75 mi1849+291768+301768+301365(Top 5%)1295(Top 9%)1295(Top 25%)
23M23.00 mi1.25 mi1795+541716+521716+521453(Top 5%)1380(Top 9%)1380(Top 26%)
24M24.00 mi1.00 mi1814-191734-181734-182704(Top 10%)2513(Top 17%)2513(Top 48%)
40K24.85 mi0.85 mi1761+531683+511683+511192(Top 4%)1127(Top 7%)1127(Top 21%)
25.2M25.20 mi0.35 mi1743+181666+171666+171078(Top 4%)1025(Top 7%)1025(Top 19%)
Finish26.22 mi1.02 mi1666+771590+761590+76783(Top 3%)750(Top 5%)750(Top 14%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×21story building
+97ft-345ft

Overall

1781

Males

1705

M18-39

1705

5K→10K

3.1 - 6.2 mi

Top 9%
×5story building
+79ft-138ft

Overall

2286

Males

2187

M18-39

2187

10K→15K

6.2 - 9.3 mi

Top 7%
×3story building
+67ft-78ft

Overall

1781

Males

1705

M18-39

1705

15K→20K

9.3 - 12.4 mi

Top 7%
×5story building
+106ft-86ft

Overall

1907

Males

1830

M18-39

1830

20K→Half

12.4 - 13.1 mi

Top 6%
×2story building
+19ft-37ft

Overall

1698

Males

1628

M18-39

1628

Half→25K

13.1 - 15.5 mi

Top 8%
×4story building
+66ft-88ft

Overall

2041

Males

1955

M18-39

1955

25K→30K

15.5 - 18.6 mi

Top 8%
×9story building
+181ft-148ft

Overall

2008

Males

1921

M18-39

1921

30K→20M

18.6 - 20.0 mi

Top 6%
×5story building
+64ft-50ft

Overall

1538

Males

1466

M18-39

1466

20M→21M

20.0 - 21.0 mi

Top 4%
×8story building
+106ft-24ft

Overall

947

Males

899

M18-39

899

21M→35K

21.0 - 21.8 mi

Top 5%
×7story building
+17ft-86ft

Overall

1365

Males

1295

M18-39

1295

35K→23M

21.8 - 23.0 mi

Top 5%
×5story building
+23ft-63ft

Overall

1453

Males

1380

M18-39

1380

23M→24M

23.0 - 24.0 mi

Top 10%
×6story building
+12ft-82ft

Overall

2704

Males

2513

M18-39

2513

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1192

Males

1127

M18-39

1127

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1078

Males

1025

M18-39

1025

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2story building
+22ft-21ft

Overall

783

Males

750

M18-39

750

Passing Analysis

Category:
Athletes Passed
1182
Passed By
277
Net Change
+905
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2571
5K → 10K24167+174#2571#2397
10K → 15K24611+235#2397#2162
15K → 20K9924+75#2162#2087
20K → Half342+32#2087#2055
Half → 25K4439+5#2055#2050
25K → 30K7855+23#2050#2027
30K → 20M779+68#2027#1959
20M → 21M832+81#1959#1878
21M → 35K356+29#1878#1849
35K → 23M6511+54#1849#1795
23M → 24M1938-19#1795#1814
24M → 40K574+53#1814#1761
40K → 25.2M235+18#1761#1743
25.2M → Finish814+77#1743#1666
TOTALS1182277+905
📊

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing