Boston Marathon logo
BOSTON MARATHON 2023

Brett Barnes

Bib: 1766•M

BC

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 5%
Gender (Male)
#0 / 15176
Top 9%
Division (M18-39)
#0 / 5285
Top 20%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:05
Rank: #992
Start → 5K
19:05 | 6:09/mi
10K· 6.21 mi
38:08
Rank: #1046 (-54)
5K → 10K
19:03 | 6:08/mi
15K· 9.32 mi
57:13
Rank: #1060 (-14)
10K → 15K
19:05 | 6:09/mi
20K· 12.43 mi
1:16:38
Rank: #1068 (-8)
15K → 20K
19:25 | 6:15/mi
Half· 13.11 mi
1:20:51
Rank: #1072 (-4)
20K → Half
4:13 | 6:11/mi
25K· 15.53 mi
1:36:01
Rank: #1072
Half → 25K
15:10 | 6:15/mi
30K· 18.64 mi
1:56:15
Rank: #1131 (-59)
25K → 30K
20:14 | 6:31/mi
20M
2:05:11
Rank: #1151 (-20)
30K → 20M
8:56 | 6:34/mi
21M
2:12:10
Rank: #1165 (-14)
20M → 21M
6:59 | 6:59/mi
35K· 21.75 mi
2:17:02
Rank: #1189 (-24)
21M → 35K
4:52 | 6:30/mi
23M
2:25:29
Rank: #1233 (-44)
35K → 23M
8:27 | 6:45/mi
24M
2:32:20
Rank: #1306 (-73)
23M → 24M
6:51 | 6:51/mi
40K· 24.85 mi
2:38:14
Rank: #1352 (-46)
24M → 40K
5:54 | 6:54/mi
25.2M
2:40:42
Rank: #1360 (-8)
40K → 25.2M
2:28 | 7:09/mi
Finish· 26.22 mi
2:47:15
Rank: #1368 (-8)
25.2M → Finish
6:33 | 6:26/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
Time1:20:51
Pace6:10 /mi
2nd Half
Distance13.11 mi
Time1:26:24
Pace6:35 /mi
📊Positive Split: 6.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:2619:056:0919:05
6:09
-
10K
6.21 mi10:38:2938:086:0819:03
6:08
-0:01
15K
9.32 mi10:57:3457:136:0819:05
6:09
+0:01
20K
12.43 mi11:16:591:16:386:1019:25
6:15
+0:06
Half
13.11 mi11:21:121:20:516:104:13
6:11
-0:04
25K
15.53 mi11:36:221:36:016:1115:10
6:15
+0:04
30K
18.64 mi11:56:361:56:156:1420:14
6:31
+0:16
20M
20.00 mi12:05:322:05:116:168:56
6:34
+0:03
21M
21.00 mi12:12:312:12:106:186:59
6:59
+0:25
35K
21.75 mi12:17:232:17:026:184:52
6:30
-0:29
23M
23.00 mi12:25:502:25:296:208:27
6:45
+0:15
24M
24.00 mi12:32:412:32:206:216:51
6:51
+0:06
40K
24.85 mi12:38:352:38:146:225:54
6:54
+0:03
25.2M
25.20 mi12:41:032:40:426:232:28
7:09
+0:15
Finish
26.22 mi12:47:362:47:156:236:33
6:26
-0:43

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

6:08 /mi

Average Pace

6:23 /mi

Slowest Pace

7:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:16:36

82% of race

Time at Steady Pace

30:39

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:23 /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 mi10:19:2619:056:0919:05
6:09
#992
10K
6.21 mi10:38:2938:086:0819:03
6:08
#1046
15K
9.32 mi10:57:3457:136:0819:05
6:09
#1060
20K
12.43 mi11:16:591:16:386:1019:25
6:15
#1068
Half
13.11 mi11:21:121:20:516:104:13
6:11
#1072
25K
15.53 mi11:36:221:36:016:1115:10
6:15
#1072
30K
18.64 mi11:56:361:56:156:1420:14
6:31
#1131
20M
20.00 mi12:05:322:05:116:168:56
6:34
#1151
21M
21.00 mi12:12:312:12:106:186:59
6:59
#1165
35K
21.75 mi12:17:232:17:026:184:52
6:30
#1189
23M
23.00 mi12:25:502:25:296:208:27
6:45
#1233
24M
24.00 mi12:32:412:32:206:216:51
6:51
#1306
40K
24.85 mi12:38:352:38:146:225:54
6:54
#1352
25.2M
25.20 mi12:41:032:40:426:232:28
7:09
#1360
Finish
26.22 mi12:47:362:47:156:236:33
6:26
#1368
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi9929369361080(Top 4%)1027(Top 7%)1027(Top 19%)
10K6.21 mi3.10 mi1046-54989-53989-531124(Top 4%)1066(Top 7%)1066(Top 20%)
15K9.32 mi3.11 mi1060-141006-171006-171080(Top 4%)1027(Top 7%)1027(Top 19%)
20K12.43 mi3.11 mi1068-81013-71013-71213(Top 5%)1160(Top 8%)1160(Top 22%)
Half13.11 mi0.68 mi1072-41017-41017-41295(Top 5%)1243(Top 8%)1243(Top 24%)
25K15.53 mi2.42 mi1072101710171171(Top 4%)1117(Top 7%)1117(Top 21%)
30K18.64 mi3.11 mi1131-591079-621079-621598(Top 6%)1528(Top 10%)1528(Top 29%)
20M20.00 mi1.36 mi1151-201098-191098-191716(Top 6%)1636(Top 11%)1636(Top 31%)
21M21.00 mi1.00 mi1165-141111-131111-132051(Top 8%)1937(Top 13%)1937(Top 37%)
35K21.75 mi0.75 mi1189-241135-241135-242389(Top 9%)2261(Top 15%)2261(Top 43%)
23M23.00 mi1.25 mi1233-441177-421177-422358(Top 9%)2215(Top 15%)2215(Top 42%)
24M24.00 mi1.00 mi1306-731245-681245-683888(Top 15%)3547(Top 23%)3547(Top 67%)
40K24.85 mi0.85 mi1352-461289-441289-443284(Top 12%)3000(Top 20%)3000(Top 57%)
25.2M25.20 mi0.35 mi1360-81296-71296-72240(Top 8%)2073(Top 14%)2073(Top 39%)
Finish26.22 mi1.02 mi1368-81303-71303-72112(Top 8%)1957(Top 13%)1957(Top 37%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 4%
×21stories
+97ft-345ft

Overall

1080

Males

1027

M18-39

1027

5K→10K

3.1 - 6.2 mi

Top 4%
×5stories
+79ft-138ft

Overall

1124

Males

1066

M18-39

1066

10K→15K

6.2 - 9.3 mi

Top 4%
×3stories
+67ft-78ft

Overall

1080

Males

1027

M18-39

1027

15K→20K

9.3 - 12.4 mi

Top 5%
×5stories
+106ft-86ft

Overall

1213

Males

1160

M18-39

1160

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1295

Males

1243

M18-39

1243

Half→25K

13.1 - 15.5 mi

Top 4%
×4stories
+66ft-88ft

Overall

1171

Males

1117

M18-39

1117

25K→30K

15.5 - 18.6 mi

Top 6%
×9stories
+181ft-148ft

Overall

1598

Males

1528

M18-39

1528

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1716

Males

1636

M18-39

1636

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2051

Males

1937

M18-39

1937

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2389

Males

2261

M18-39

2261

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2358

Males

2215

M18-39

2215

23M→24M

23.0 - 24.0 mi

Top 15%
×6stories
+12ft-82ft

Overall

3888

Males

3547

M18-39

3547

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3284

Males

3000

M18-39

3000

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2240

Males

2073

M18-39

2073

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2112

Males

1957

M18-39

1957

Passing Analysis

Category:
Athletes Passed
221
Passed By
597
Net Change
-376
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#992
5K → 10K2983-54#992#1046
10K → 15K2842-14#1046#1060
15K → 20K2533-8#1060#1068
20K → Half26-4#1068#1072
Half → 25K24240#1072#1072
25K → 30K2180-59#1072#1131
30K → 20M1535-20#1131#1151
20M → 21M2135-14#1151#1165
21M → 35K630-24#1165#1189
35K → 23M1458-44#1189#1233
23M → 24M578-73#1233#1306
24M → 40K349-46#1306#1352
40K → 25.2M816-8#1352#1360
25.2M → Finish2028-8#1360#1368
TOTALS221597-376
📊

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