Boston Marathon logo
BOSTON MARATHON 2025

Kevin Barrow

Bib: 5534•M

UT

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 24%
Gender (Male)
#0 / 16105
Top 36%
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
6:29/mi
20:10
↑ 97↓ 3451.5%
10K· 6.21 mi
6:34/mi
40:34
↑ 79↓ 1380.4%
15K· 9.32 mi
6:33/mi
1:00:56
↑ 67↓ 78
20K· 12.43 mi
6:41/mi
1:21:41
↑ 106↓ 860.1%
Half· 13.11 mi
6:39/mi
1:26:13
↑ 19↓ 370.5%
25K· 15.53 mi
6:58/mi
1:43:06
↑ 66↓ 880.2%
30K· 18.64 mi
8:12/mi
2:08:35
↑ 181↓ 1480.2%
20M
8:33/mi
2:20:12
↑ 64↓ 500.2%
21M
8:21/mi
2:28:33
↑ 106↓ 241.6%
35K· 21.75 mi
7:41/mi
2:34:18
↑ 17↓ 861.7%
23M
7:51/mi
2:44:08
↑ 23↓ 630.6%
24M
7:45/mi
2:51:53
↓ 821.3%
40K· 24.85 mi
7:37/mi
2:58:24
↓ 200.3%
25.2M
8:48/mi
3:01:26
↑ 13↓ 160.2%
Finish· 26.22 mi
7:23/mi
3:08:57
↑ 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
Time1:26:13
Pace6:35 /mi
2nd Half
Distance13.11 mi
Time1:42:44
Pace7:50 /mi
📊Positive Split: 19.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:4320:106:2920:10
6:29
-
10K
6.21 mi10:44:0740:346:3220:24
6:34
+0:05
15K
9.32 mi11:04:291:00:566:3220:22
6:33
-0:01
20K
12.43 mi11:25:141:21:416:3420:45
6:41
+0:08
Half
13.11 mi11:29:461:26:136:354:32
6:39
-0:02
25K
15.53 mi11:46:391:43:066:3816:53
6:58
+0:19
30K
18.64 mi12:12:082:08:356:5425:29
8:12
+1:14
20M
20.00 mi12:23:452:20:127:0111:37
8:33
+0:21
21M
21.00 mi12:32:062:28:337:048:21
8:21
-0:12
35K
21.75 mi12:37:512:34:187:065:45
7:41
-0:40
23M
23.00 mi12:47:412:44:087:089:50
7:51
+0:10
24M
24.00 mi12:55:262:51:537:107:45
7:45
-0:06
40K
24.85 mi13:01:572:58:247:116:31
7:37
-0:08
25.2M
25.20 mi13:04:593:01:267:123:02
8:48
+1:11
Finish
26.22 mi13:12:303:08:577:137:31
7:23
-1:25

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

6:29 /mi

Average Pace

7:13 /mi

Slowest Pace

8:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:43:06

55% of race

Time at Steady Pace

37:22

20% of race

Time at Slower Pace

48:29

26% of race

Average Pace: 7:12 /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 mi10:23:4320:106:2920:10
6:29
#3781
10K
6.21 mi10:44:0740:346:3220:24
6:34
#3981
15K
9.32 mi11:04:291:00:566:3220:22
6:33
#3945
20K
12.43 mi11:25:141:21:416:3420:45
6:41
#3966
Half
13.11 mi11:29:461:26:136:354:32
6:39
#3998
25K
15.53 mi11:46:391:43:066:3816:53
6:58
#4273
30K
18.64 mi12:12:082:08:356:5425:29
8:12
#5967
20M
20.00 mi12:23:452:20:127:0111:37
8:33
#6449
21M
21.00 mi12:32:062:28:337:048:21
8:21
#6527
35K
21.75 mi12:37:512:34:187:065:45
7:41
#6595
23M
23.00 mi12:47:412:44:087:089:50
7:51
#6639
24M
24.00 mi12:55:262:51:537:107:45
7:45
#6717
40K
24.85 mi13:01:572:58:247:116:31
7:37
#6696
25.2M
25.20 mi13:04:593:01:267:123:02
8:48
#6745
Finish
26.22 mi13:12:303:08:577:137:31
7:23
#6749
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3781358035803929(Top 14%)3705(Top 23%)3705(Top 66%)
10K6.21 mi3.10 mi3981-2003765-1853765-1854207(Top 15%)3957(Top 25%)3957(Top 70%)
15K9.32 mi3.11 mi3945+363718+473718+473929(Top 14%)3705(Top 23%)3705(Top 66%)
20K12.43 mi3.11 mi3966-213735-173735-174263(Top 15%)3991(Top 25%)3991(Top 71%)
Half13.11 mi0.68 mi3998-323765-303765-304869(Top 17%)4529(Top 28%)4529(Top 80%)
25K15.53 mi2.42 mi4273-2754008-2434008-2436072(Top 21%)5457(Top 34%)5457(Top 97%)
30K18.64 mi3.11 mi5967-16945416-14085416-140812825(Top 45%)9058(Top 56%)9058(Top 161%)
20M20.00 mi1.36 mi6449-4825775-3595775-35914051(Top 49%)9461(Top 59%)9461(Top 168%)
21M21.00 mi1.00 mi6527-785808-335808-339497(Top 33%)7095(Top 44%)7095(Top 126%)
35K21.75 mi0.75 mi6595-685843-355843-359898(Top 35%)7298(Top 45%)7298(Top 129%)
23M23.00 mi1.25 mi6639-445844-15844-18935(Top 31%)6682(Top 41%)6682(Top 118%)
24M24.00 mi1.00 mi6717-785873-295873-299423(Top 33%)6857(Top 43%)6857(Top 122%)
40K24.85 mi0.85 mi6696+215833+405833+407526(Top 26%)5731(Top 36%)5731(Top 102%)
25.2M25.20 mi0.35 mi6745-495849-165849-1610495(Top 37%)7187(Top 45%)7187(Top 127%)
Finish26.22 mi1.02 mi6749-45827+225827+228300(Top 29%)6076(Top 38%)6076(Top 108%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21story building
+97ft-345ft

Overall

3929

Males

3705

M18-39

3705

5K→10K

3.1 - 6.2 mi

Top 15%
×5story building
+79ft-138ft

Overall

4207

Males

3957

M18-39

3957

10K→15K

6.2 - 9.3 mi

Top 14%
×3story building
+67ft-78ft

Overall

3929

Males

3705

M18-39

3705

15K→20K

9.3 - 12.4 mi

Top 15%
×5story building
+106ft-86ft

Overall

4263

Males

3991

M18-39

3991

20K→Half

12.4 - 13.1 mi

Top 17%
×2story building
+19ft-37ft

Overall

4869

Males

4529

M18-39

4529

Half→25K

13.1 - 15.5 mi

Top 21%
×4story building
+66ft-88ft

Overall

6072

Males

5457

M18-39

5457

25K→30K

15.5 - 18.6 mi

Top 45%
×9story building
+181ft-148ft

Overall

12825

Males

9058

M18-39

9058

30K→20M

18.6 - 20.0 mi

Top 49%
×5story building
+64ft-50ft

Overall

14051

Males

9461

M18-39

9461

20M→21M

20.0 - 21.0 mi

Top 33%
×8story building
+106ft-24ft

Overall

9497

Males

7095

M18-39

7095

21M→35K

21.0 - 21.8 mi

Top 35%
×7story building
+17ft-86ft

Overall

9898

Males

7298

M18-39

7298

35K→23M

21.8 - 23.0 mi

Top 31%
×5story building
+23ft-63ft

Overall

8935

Males

6682

M18-39

6682

23M→24M

23.0 - 24.0 mi

Top 33%
×6story building
+12ft-82ft

Overall

9423

Males

6857

M18-39

6857

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

7526

Males

5731

M18-39

5731

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

10495

Males

7187

M18-39

7187

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2story building
+22ft-21ft

Overall

8300

Males

6076

M18-39

6076

Passing Analysis

Category:
Athletes Passed
684
Passed By
3652
Net Change
-2968
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3781
5K → 10K71271-200#3781#3981
10K → 15K11074+36#3981#3945
15K → 20K87108-21#3945#3966
20K → Half638-32#3966#3998
Half → 25K31306-275#3998#4273
25K → 30K171711-1694#4273#5967
30K → 20M16498-482#5967#6449
20M → 21M42120-78#6449#6527
21M → 35K3098-68#6527#6595
35K → 23M70114-44#6595#6639
23M → 24M44122-78#6639#6717
24M → 40K7958+21#6717#6696
40K → 25.2M2170-49#6696#6745
25.2M → Finish6064-4#6745#6749
TOTALS6843652-2968
📊

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