Boston Marathon logo
BOSTON MARATHON 2023

Brett Green

Bib: 3767•M

MO

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 4%
Gender (Male)
#0 / 15176
Top 7%
Masters (Masters Men)
#0 / 9891
Top 2%
Division (M40-44)
#0 / 2241
Top 5%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:31
Rank: #1377
Start → 5K
19:31 | 6:17/mi
10K· 6.21 mi
38:42
Rank: #1288 (+89)
5K → 10K
19:11 | 6:10/mi
15K· 9.32 mi
57:57
Rank: #1242 (+46)
10K → 15K
19:15 | 6:12/mi
20K· 12.43 mi
1:17:36
Rank: #1292 (-50)
15K → 20K
19:39 | 6:19/mi
Half· 13.11 mi
1:21:51
Rank: #1293 (-1)
20K → Half
4:15 | 6:14/mi
25K· 15.53 mi
1:37:09
Rank: #1297 (-4)
Half → 25K
15:18 | 6:19/mi
30K· 18.64 mi
1:56:54
Rank: #1237 (+60)
25K → 30K
19:45 | 6:21/mi
20M
2:05:30
Rank: #1200 (+37)
30K → 20M
8:36 | 6:20/mi
21M
2:12:09
Rank: #1154 (+46)
20M → 21M
6:39 | 6:39/mi
35K· 21.75 mi
2:16:41
Rank: #1135 (+19)
21M → 35K
4:32 | 6:04/mi
23M
2:24:40
Rank: #1109 (+26)
35K → 23M
7:59 | 6:23/mi
24M
2:30:49
Rank: #1100 (+9)
23M → 24M
6:09 | 6:09/mi
40K· 24.85 mi
2:36:13
Rank: #1078 (+22)
24M → 40K
5:24 | 6:19/mi
25.2M
2:38:40
Rank: #1090 (-12)
40K → 25.2M
2:27 | 7:06/mi
Finish· 26.22 mi
2:45:15
Rank: #1109 (-19)
25.2M → Finish
6:35 | 6:28/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
Time1:21:51
Pace6:15 /mi
2nd Half
Distance13.11 mi
Time1:23:24
Pace6:22 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:5619:316:1719:31
6:17
-
10K
6.21 mi10:40:0738:426:1419:11
6:10
-0:07
15K
9.32 mi10:59:2257:576:1319:15
6:12
+0:02
20K
12.43 mi11:19:011:17:366:1519:39
6:19
+0:07
Half
13.11 mi11:23:161:21:516:154:15
6:14
-0:05
25K
15.53 mi11:38:341:37:096:1515:18
6:19
+0:05
30K
18.64 mi11:58:191:56:546:1619:45
6:21
+0:02
20M
20.00 mi12:06:552:05:306:168:36
6:20
-0:01
21M
21.00 mi12:13:342:12:096:186:39
6:39
+0:19
35K
21.75 mi12:18:062:16:416:174:32
6:04
-0:35
23M
23.00 mi12:26:052:24:406:177:59
6:23
+0:19
24M
24.00 mi12:32:142:30:496:176:09
6:09
-0:14
40K
24.85 mi12:37:382:36:136:175:24
6:19
+0:10
25.2M
25.20 mi12:40:052:38:406:182:27
7:06
+0:47
Finish
26.22 mi12:46:402:45:156:186:35
6:28
-0:38

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

6:04 /mi

Average Pace

6:18 /mi

Slowest Pace

7:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:42:48

99% of race

Time at Steady Pace

2:27

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:18 /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 mi10:20:5619:316:1719:31
6:17
#1377
10K
6.21 mi10:40:0738:426:1419:11
6:10
#1288
15K
9.32 mi10:59:2257:576:1319:15
6:12
#1242
20K
12.43 mi11:19:011:17:366:1519:39
6:19
#1292
Half
13.11 mi11:23:161:21:516:154:15
6:14
#1293
25K
15.53 mi11:38:341:37:096:1515:18
6:19
#1297
30K
18.64 mi11:58:191:56:546:1619:45
6:21
#1237
20M
20.00 mi12:06:552:05:306:168:36
6:20
#1200
21M
21.00 mi12:13:342:12:096:186:39
6:39
#1154
35K
21.75 mi12:18:062:16:416:174:32
6:04
#1135
23M
23.00 mi12:26:052:24:406:177:59
6:23
#1109
24M
24.00 mi12:32:142:30:496:176:09
6:09
#1100
40K
24.85 mi12:37:382:36:136:175:24
6:19
#1078
25.2M
25.20 mi12:40:052:38:406:182:27
7:06
#1090
Finish
26.22 mi12:46:402:45:156:186:35
6:28
#1109
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi1377130913091224(Top 5%)1167(Top 8%)1167(Top 52%)
10K6.21 mi3.10 mi1288+891223+861223+861248(Top 5%)1185(Top 8%)1185(Top 53%)
15K9.32 mi3.11 mi1242+461179+441179+441224(Top 5%)1167(Top 8%)1167(Top 52%)
20K12.43 mi3.11 mi1292-501231-521231-521489(Top 6%)1423(Top 9%)1423(Top 63%)
Half13.11 mi0.68 mi1293-1123112311458(Top 5%)1394(Top 9%)1394(Top 62%)
25K15.53 mi2.42 mi1297-41238-71238-71370(Top 5%)1307(Top 9%)1307(Top 58%)
30K18.64 mi3.11 mi1237+601182+561182+561080(Top 4%)1028(Top 7%)1028(Top 46%)
20M20.00 mi1.36 mi1200+371146+361146+36943(Top 4%)900(Top 6%)900(Top 40%)
21M21.00 mi1.00 mi1154+461100+461100+46973(Top 4%)925(Top 6%)925(Top 41%)
35K21.75 mi0.75 mi1135+191082+181082+18828(Top 3%)785(Top 5%)785(Top 35%)
23M23.00 mi1.25 mi1109+261057+251057+251023(Top 4%)970(Top 6%)970(Top 43%)
24M24.00 mi1.00 mi1100+91048+91048+9879(Top 3%)834(Top 5%)834(Top 37%)
40K24.85 mi0.85 mi1078+221026+221026+22944(Top 4%)893(Top 6%)893(Top 40%)
25.2M25.20 mi0.35 mi1090-121038-121038-122062(Top 8%)1918(Top 13%)1918(Top 86%)
Finish26.22 mi1.02 mi1109-191056-181056-182273(Top 9%)2101(Top 14%)2101(Top 94%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1224

Males

1167

M40-44

1167

5K→10K

3.1 - 6.2 mi

Top 5%
×5stories
+79ft-138ft

Overall

1248

Males

1185

M40-44

1185

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1224

Males

1167

M40-44

1167

15K→20K

9.3 - 12.4 mi

Top 6%
×5stories
+106ft-86ft

Overall

1489

Males

1423

M40-44

1423

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1458

Males

1394

M40-44

1394

Half→25K

13.1 - 15.5 mi

Top 5%
×4stories
+66ft-88ft

Overall

1370

Males

1307

M40-44

1307

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1080

Males

1028

M40-44

1028

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

943

Males

900

M40-44

900

20M→21M

20.0 - 21.0 mi

Top 4%
×8stories
+106ft-24ft

Overall

973

Males

925

M40-44

925

21M→35K

21.0 - 21.8 mi

Top 3%
×7stories
+17ft-86ft

Overall

828

Males

785

M40-44

785

35K→23M

21.8 - 23.0 mi

Top 4%
×5stories
+23ft-63ft

Overall

1023

Males

970

M40-44

970

23M→24M

23.0 - 24.0 mi

Top 3%
×6stories
+12ft-82ft

Overall

879

Males

834

M40-44

834

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

944

Males

893

M40-44

893

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2062

Males

1918

M40-44

1918

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2stories
+22ft-21ft

Overall

2273

Males

2101

M40-44

2101

Passing Analysis

Category:
Athletes Passed
519
Passed By
251
Net Change
+268
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1377
5K → 10K12233+89#1377#1288
10K → 15K6721+46#1288#1242
15K → 20K2474-50#1242#1292
20K → Half56-1#1292#1293
Half → 25K2630-4#1293#1297
25K → 30K7111+60#1297#1237
30K → 20M392+37#1237#1200
20M → 21M504+46#1200#1154
21M → 35K245+19#1154#1135
35K → 23M348+26#1135#1109
23M → 24M178+9#1109#1100
24M → 40K275+22#1100#1078
40K → 25.2M214-12#1078#1090
25.2M → Finish1130-19#1090#1109
TOTALS519251+268
📊

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