Boston Marathon logo
BOSTON MARATHON 2025

Robert Brown

Bib: 29111•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ 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
8:04/mi
25:04
↑ 97↓ 3451.5%
10K· 6.21 mi
7:44/mi
49:07
↑ 79↓ 1380.4%
15K· 9.32 mi
7:47/mi
1:13:17
↑ 67↓ 78
20K· 12.43 mi
8:07/mi
1:38:31
↑ 106↓ 860.1%
Half· 13.11 mi
7:55/mi
1:43:55
↑ 19↓ 370.5%
25K· 15.53 mi
8:16/mi
2:03:58
↑ 66↓ 880.2%
30K· 18.64 mi
8:57/mi
2:31:47
↑ 181↓ 1480.2%
20M
9:03/mi
2:44:05
↑ 64↓ 500.2%
21M
9:41/mi
2:53:46
↑ 106↓ 241.6%
35K· 21.75 mi
8:47/mi
3:00:20
↑ 17↓ 861.7%
23M
9:11/mi
3:11:50
↑ 23↓ 630.6%
24M
9:08/mi
3:20:58
↓ 821.3%
40K· 24.85 mi
9:38/mi
3:29:12
↓ 200.3%
25.2M
10:18/mi
3:32:45
↑ 13↓ 160.2%
Finish· 26.22 mi
9:03/mi
3:41:58
↑ 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
Time1:43:55
Pace7:56 /mi
2nd Half
Distance13.11 mi
Time1:58:03
Pace9:00 /mi
📊Positive Split: 13.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:1525:048:0425:04
8:04
-
10K
6.21 mi12:08:1849:077:5424:03
7:44
-0:20
15K
9.32 mi12:32:281:13:177:5224:10
7:47
+0:03
20K
12.43 mi12:57:421:38:317:5625:14
8:07
+0:20
Half
13.11 mi13:03:061:43:557:565:24
7:55
-0:12
25K
15.53 mi13:23:092:03:587:5920:03
8:16
+0:21
30K
18.64 mi13:50:582:31:478:0927:49
8:57
+0:41
20M
20.00 mi14:03:162:44:058:1212:18
9:03
+0:06
21M
21.00 mi14:12:572:53:468:169:41
9:41
+0:38
35K
21.75 mi14:19:313:00:208:186:34
8:47
-0:54
23M
23.00 mi14:31:013:11:508:2011:30
9:11
+0:24
24M
24.00 mi14:40:093:20:588:229:08
9:08
-0:03
40K
24.85 mi14:48:233:29:128:258:14
9:38
+0:30
25.2M
25.20 mi14:51:563:32:458:273:33
10:18
+0:40
Finish
26.22 mi15:01:093:41:588:289:13
9:03
-1:15

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

7:44 /mi

Average Pace

8:28 /mi

Slowest Pace

10:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:03:58

56% of race

Time at Steady Pace

1:16:32

34% of race

Time at Slower Pace

21:28

10% of race

Average Pace: 8:28 /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 mi11:44:1525:048:0425:04
8:04
#17133
10K
6.21 mi12:08:1849:077:5424:03
7:44
#15719
15K
9.32 mi12:32:281:13:177:5224:10
7:47
#15184
20K
12.43 mi12:57:421:38:317:5625:14
8:07
#15346
Half
13.11 mi13:03:061:43:557:565:24
7:55
#15327
25K
15.53 mi13:23:092:03:587:5920:03
8:16
#15395
30K
18.64 mi13:50:582:31:478:0927:49
8:57
#15824
20M
20.00 mi14:03:162:44:058:1212:18
9:03
#15887
21M
21.00 mi14:12:572:53:468:169:41
9:41
#15903
35K
21.75 mi14:19:313:00:208:186:34
8:47
#15919
23M
23.00 mi14:31:013:11:508:2011:30
9:11
#15956
24M
24.00 mi14:40:093:20:588:229:08
9:08
#16048
40K
24.85 mi14:48:233:29:128:258:14
9:38
#16185
25.2M
25.20 mi14:51:563:32:458:273:33
10:18
#16231
Finish
26.22 mi15:01:093:41:588:289:13
9:03
#16354
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi17133112671126714177(Top 50%)10015(Top 62%)10015(Top 178%)
10K6.21 mi3.10 mi15719+141410704+56310704+56314252(Top 50%)10107(Top 63%)10107(Top 179%)
15K9.32 mi3.11 mi15184+53510471+23310471+23314177(Top 50%)10015(Top 62%)10015(Top 178%)
20K12.43 mi3.11 mi15346-16210525-5410525-5415786(Top 56%)10652(Top 66%)10652(Top 189%)
Half13.11 mi0.68 mi15327+1910517+810517+815190(Top 53%)10436(Top 65%)10436(Top 185%)
25K15.53 mi2.42 mi15395-6810519-210519-215711(Top 55%)10532(Top 65%)10532(Top 187%)
30K18.64 mi3.11 mi15824-42910656-13710656-13717428(Top 61%)11117(Top 69%)11117(Top 197%)
20M20.00 mi1.36 mi15887-6310635+2110635+2117054(Top 60%)10842(Top 67%)10842(Top 192%)
21M21.00 mi1.00 mi15903-1610608+2710608+2716936(Top 60%)10665(Top 66%)10665(Top 189%)
35K21.75 mi0.75 mi15919-1610602+610602+617100(Top 60%)10648(Top 66%)10648(Top 189%)
23M23.00 mi1.25 mi15956-3710567+3510567+3517238(Top 61%)10617(Top 66%)10617(Top 188%)
24M24.00 mi1.00 mi16048-9210598-3110598-3118016(Top 63%)10927(Top 68%)10927(Top 194%)
40K24.85 mi0.85 mi16185-13710638-4010638-4019174(Top 68%)11402(Top 71%)11402(Top 202%)
25.2M25.20 mi0.35 mi16231-4610647-910647-918222(Top 64%)10915(Top 68%)10915(Top 193%)
Finish26.22 mi1.02 mi16354-12310672-2510672-2519240(Top 68%)11448(Top 71%)11448(Top 203%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21story building
+97ft-345ft

Overall

14177

Males

10015

M18-39

10015

5K→10K

3.1 - 6.2 mi

Top 50%
×5story building
+79ft-138ft

Overall

14252

Males

10107

M18-39

10107

10K→15K

6.2 - 9.3 mi

Top 50%
×3story building
+67ft-78ft

Overall

14177

Males

10015

M18-39

10015

15K→20K

9.3 - 12.4 mi

Top 56%
×5story building
+106ft-86ft

Overall

15786

Males

10652

M18-39

10652

20K→Half

12.4 - 13.1 mi

Top 53%
×2story building
+19ft-37ft

Overall

15190

Males

10436

M18-39

10436

Half→25K

13.1 - 15.5 mi

Top 55%
×4story building
+66ft-88ft

Overall

15711

Males

10532

M18-39

10532

25K→30K

15.5 - 18.6 mi

Top 61%
×9story building
+181ft-148ft

Overall

17428

Males

11117

M18-39

11117

30K→20M

18.6 - 20.0 mi

Top 60%
×5story building
+64ft-50ft

Overall

17054

Males

10842

M18-39

10842

20M→21M

20.0 - 21.0 mi

Top 60%
×8story building
+106ft-24ft

Overall

16936

Males

10665

M18-39

10665

21M→35K

21.0 - 21.8 mi

Top 60%
×7story building
+17ft-86ft

Overall

17100

Males

10648

M18-39

10648

35K→23M

21.8 - 23.0 mi

Top 61%
×5story building
+23ft-63ft

Overall

17238

Males

10617

M18-39

10617

23M→24M

23.0 - 24.0 mi

Top 63%
×6story building
+12ft-82ft

Overall

18016

Males

10927

M18-39

10927

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

19174

Males

11402

M18-39

11402

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

18222

Males

10915

M18-39

10915

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2story building
+22ft-21ft

Overall

19240

Males

11448

M18-39

11448

Passing Analysis

Category:
Athletes Passed
2985
Passed By
2206
Net Change
+779
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17133
5K → 10K144026+1414#17133#15719
10K → 15K55823+535#15719#15184
15K → 20K152314-162#15184#15346
20K → Half4829+19#15346#15327
Half → 25K155223-68#15327#15395
25K → 30K130559-429#15395#15824
30K → 20M96159-63#15824#15887
20M → 21M112128-16#15887#15903
21M → 35K6177-16#15903#15919
35K → 23M100137-37#15919#15956
23M → 24M37129-92#15956#16048
24M → 40K35172-137#16048#16185
40K → 25.2M1965-46#16185#16231
25.2M → Finish42165-123#16231#16354
TOTALS29852206+779
📊

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