Boston Marathon logo
BOSTON MARATHON 2023

Martin Brown

Bib: 25887•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
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
9:17/mi
28:51
↑ 97↓ 3451.5%
10K· 6.21 mi
8:37/mi
55:37
↑ 79↓ 1380.4%
15K· 9.32 mi
8:44/mi
1:22:44
↑ 67↓ 78
20K· 12.43 mi
8:52/mi
1:50:16
↑ 106↓ 860.1%
Half· 13.11 mi
8:42/mi
1:56:12
↑ 19↓ 370.5%
25K· 15.53 mi
9:05/mi
2:18:13
↑ 66↓ 880.2%
30K· 18.64 mi
10:36/mi
2:51:09
↑ 181↓ 1480.2%
20M
9:20/mi
3:03:50
↑ 64↓ 500.2%
21M
9:46/mi
3:13:36
↑ 106↓ 241.6%
35K· 21.75 mi
11:14/mi
3:22:00
↑ 17↓ 861.7%
23M
9:55/mi
3:34:25
↑ 23↓ 630.6%
24M
10:21/mi
3:44:46
↓ 821.3%
40K· 24.85 mi
10:43/mi
3:53:56
↓ 200.3%
25.2M
10:03/mi
3:57:24
↑ 13↓ 160.2%
Finish· 26.22 mi
8:54/mi
4:06:28
↑ 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
Time1:56:12
Pace8:52 /mi
2nd Half
Distance13.11 mi
Time2:10:16
Pace9:56 /mi
📊Positive Split: 12.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:0228:519:1728:51
9:17
-
10K
6.21 mi12:11:4855:378:5726:46
8:37
-0:40
15K
9.32 mi12:38:551:22:448:5327:07
8:44
+0:07
20K
12.43 mi13:06:271:50:168:5227:32
8:52
+0:08
Half
13.11 mi13:12:231:56:128:525:56
8:42
-0:10
25K
15.53 mi13:34:242:18:138:5422:01
9:05
+0:23
30K
18.64 mi14:07:202:51:099:1132:56
10:36
+1:31
20M
20.00 mi14:20:013:03:509:1112:41
9:20
-1:16
21M
21.00 mi14:29:473:13:369:139:46
9:46
+0:26
35K
21.75 mi14:38:113:22:009:178:24
11:14
+1:28
23M
23.00 mi14:50:363:34:259:1912:25
9:55
-1:19
24M
24.00 mi15:00:573:44:469:2210:21
10:21
+0:26
40K
24.85 mi15:10:073:53:569:259:10
10:43
+0:22
25.2M
25.20 mi15:13:353:57:249:253:28
10:03
-0:40
Finish
26.22 mi15:22:394:06:289:249:04
8:54
-1:09

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

8:37 /mi

Average Pace

9:24 /mi

Slowest Pace

11:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:36:25

39% of race

Time at Steady Pace

1:03:33

26% of race

Time at Slower Pace

1:26:30

35% of race

Average Pace: 9:24 /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 mi11:45:0228:519:1728:51
9:17
#21479
10K
6.21 mi12:11:4855:378:5726:46
8:37
#20424
15K
9.32 mi12:38:551:22:448:5327:07
8:44
#20012
20K
12.43 mi13:06:271:50:168:5227:32
8:52
#19717
Half
13.11 mi13:12:231:56:128:525:56
8:42
#19678
25K
15.53 mi13:34:242:18:138:5422:01
9:05
#19609
30K
18.64 mi14:07:202:51:099:1132:56
10:36
#20386
20M
20.00 mi14:20:013:03:509:1112:41
9:20
#20220
21M
21.00 mi14:29:473:13:369:139:46
9:46
#20028
35K
21.75 mi14:38:113:22:009:178:24
11:14
#20250
23M
23.00 mi14:50:363:34:259:1912:25
9:55
#20205
24M
24.00 mi15:00:573:44:469:2210:21
10:21
#20288
40K
24.85 mi15:10:073:53:569:259:10
10:43
#20336
25.2M
25.20 mi15:13:353:57:249:253:28
10:03
#20295
Finish
26.22 mi15:22:394:06:289:249:04
8:54
#20214
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi21479128321283219118(Top 72%)11928(Top 79%)11928(Top 226%)
10K6.21 mi3.10 mi20424+105512415+41712415+41718924(Top 71%)11864(Top 78%)11864(Top 224%)
15K9.32 mi3.11 mi20012+41212245+17012245+17019118(Top 72%)11928(Top 79%)11928(Top 226%)
20K12.43 mi3.11 mi19717+29512145+10012145+10019008(Top 71%)11899(Top 78%)11899(Top 225%)
Half13.11 mi0.68 mi19678+3912133+1212133+1218902(Top 71%)11867(Top 78%)11867(Top 225%)
25K15.53 mi2.42 mi19609+6912098+3512098+3519329(Top 73%)11987(Top 79%)11987(Top 227%)
30K18.64 mi3.11 mi20386-77712421-32312421-32322406(Top 84%)13255(Top 87%)13255(Top 251%)
20M20.00 mi1.36 mi20220+16612331+9012331+9018156(Top 68%)11314(Top 75%)11314(Top 214%)
21M21.00 mi1.00 mi20028+19212241+9012241+9017114(Top 64%)10844(Top 71%)10844(Top 205%)
35K21.75 mi0.75 mi20250-22212323-8212323-8223677(Top 89%)13673(Top 90%)13673(Top 259%)
23M23.00 mi1.25 mi20205+4512300+2312300+2319728(Top 74%)11895(Top 78%)11895(Top 225%)
24M24.00 mi1.00 mi20288-8312325-2512325-2521655(Top 81%)12711(Top 84%)12711(Top 241%)
40K24.85 mi0.85 mi20336-4812337-1212337-1221744(Top 82%)12707(Top 84%)12707(Top 240%)
25.2M25.20 mi0.35 mi20295+4112313+2412313+2417585(Top 66%)10842(Top 71%)10842(Top 205%)
Finish26.22 mi1.02 mi20214+8112270+4312270+4317476(Top 66%)10824(Top 71%)10824(Top 205%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21story building
+97ft-345ft

Overall

19118

Males

11928

M18-39

11928

5K→10K

3.1 - 6.2 mi

Top 71%
×5story building
+79ft-138ft

Overall

18924

Males

11864

M18-39

11864

10K→15K

6.2 - 9.3 mi

Top 72%
×3story building
+67ft-78ft

Overall

19118

Males

11928

M18-39

11928

15K→20K

9.3 - 12.4 mi

Top 71%
×5story building
+106ft-86ft

Overall

19008

Males

11899

M18-39

11899

20K→Half

12.4 - 13.1 mi

Top 71%
×2story building
+19ft-37ft

Overall

18902

Males

11867

M18-39

11867

Half→25K

13.1 - 15.5 mi

Top 73%
×4story building
+66ft-88ft

Overall

19329

Males

11987

M18-39

11987

25K→30K

15.5 - 18.6 mi

Top 84%
×9story building
+181ft-148ft

Overall

22406

Males

13255

M18-39

13255

30K→20M

18.6 - 20.0 mi

Top 68%
×5story building
+64ft-50ft

Overall

18156

Males

11314

M18-39

11314

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

17114

Males

10844

M18-39

10844

21M→35K

21.0 - 21.8 mi

Top 89%
×7story building
+17ft-86ft

Overall

23677

Males

13673

M18-39

13673

35K→23M

21.8 - 23.0 mi

Top 74%
×5story building
+23ft-63ft

Overall

19728

Males

11895

M18-39

11895

23M→24M

23.0 - 24.0 mi

Top 81%
×6story building
+12ft-82ft

Overall

21655

Males

12711

M18-39

12711

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

21744

Males

12707

M18-39

12707

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

17585

Males

10842

M18-39

10842

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2story building
+22ft-21ft

Overall

17476

Males

10824

M18-39

10824

Passing Analysis

Category:
Athletes Passed
2788
Passed By
1523
Net Change
+1265
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21479
5K → 10K108934+1055#21479#20424
10K → 15K46149+412#20424#20012
15K → 20K34348+295#20012#19717
20K → Half5617+39#19717#19678
Half → 25K14475+69#19678#19609
25K → 30K34811-777#19609#20386
30K → 20M17711+166#20386#20220
20M → 21M2019+192#20220#20028
21M → 35K10232-222#20028#20250
35K → 23M9550+45#20250#20205
23M → 24M22105-83#20205#20288
24M → 40K2472-48#20288#20336
40K → 25.2M443+41#20336#20295
25.2M → Finish887+81#20295#20214
TOTALS27881523+1265
📊

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