Boston Marathon logo
BOSTON MARATHON 2025

Ian Fowler

Bib: 29920•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

Start
0:00:00
Race begins
5K· 3.11 mi
30:26
Rank: #25076
Start → 5K
30:26 | 9:48/mi
10K· 6.21 mi
1:00:13
Rank: #24715 (+361)
5K → 10K
29:47 | 9:35/mi
15K· 9.32 mi
1:29:52
Rank: #24416 (+299)
10K → 15K
29:39 | 9:33/mi
20K· 12.43 mi
1:58:58
Rank: #23926 (+490)
15K → 20K
29:06 | 9:22/mi
Half· 13.11 mi
2:05:17
Rank: #23886 (+40)
20K → Half
6:19 | 9:16/mi
25K· 15.53 mi
2:28:59
Rank: #23667 (+219)
Half → 25K
23:42 | 9:46/mi
30K· 18.64 mi
3:00:21
Rank: #23323 (+344)
25K → 30K
31:22 | 10:06/mi
20M
3:13:21
Rank: #23056 (+267)
30K → 20M
13:00 | 9:34/mi
21M
3:23:48
Rank: #22873 (+183)
20M → 21M
10:27 | 10:27/mi
35K· 21.75 mi
3:30:53
Rank: #22790 (+83)
21M → 35K
7:05 | 9:28/mi
23M
3:42:37
Rank: #22528 (+262)
35K → 23M
11:44 | 9:22/mi
24M
3:52:43
Rank: #22473 (+55)
23M → 24M
10:06 | 10:06/mi
40K· 24.85 mi
4:01:21
Rank: #22404 (+69)
24M → 40K
8:38 | 10:06/mi
25.2M
4:05:21
Rank: #22398 (+6)
40K → 25.2M
4:00 | 11:36/mi
Finish· 26.22 mi
4:14:35
Rank: #22300 (+98)
25.2M → Finish
9:14 | 9:04/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
Time2:05:17
Pace9:33 /mi
2nd Half
Distance13.11 mi
Time2:09:18
Pace9:52 /mi
📊Positive Split: 3.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:3330:269:4830:26
9:48
-
10K
6.21 mi12:22:201:00:139:4129:47
9:35
-0:13
15K
9.32 mi12:51:591:29:529:3929:39
9:33
-0:02
20K
12.43 mi13:21:051:58:589:3429:06
9:22
-0:11
Half
13.11 mi13:27:242:05:179:336:19
9:16
-0:06
25K
15.53 mi13:51:062:28:599:3523:42
9:46
+0:30
30K
18.64 mi14:22:283:00:219:4031:22
10:06
+0:20
20M
20.00 mi14:35:283:13:219:4013:00
9:34
-0:32
21M
21.00 mi14:45:553:23:489:4210:27
10:27
+0:53
35K
21.75 mi14:53:003:30:539:427:05
9:28
-0:59
23M
23.00 mi15:04:443:42:379:4111:44
9:22
-0:06
24M
24.00 mi15:14:503:52:439:4210:06
10:06
+0:44
40K
24.85 mi15:23:284:01:219:438:38
10:06
0:00
25.2M
25.20 mi15:27:284:05:219:444:00
11:36
+1:30
Finish
26.22 mi15:36:424:14:359:439:14
9:04
-2:32

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

9:04 /mi

Average Pace

9:43 /mi

Slowest Pace

11:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

15:33

6% of race

Time at Steady Pace

2:54:29

69% of race

Time at Slower Pace

1:04:33

25% of race

Average Pace: 9:43 /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 mi11:52:3330:269:4830:26
9:48
#25076
10K
6.21 mi12:22:201:00:139:4129:47
9:35
#24715
15K
9.32 mi12:51:591:29:529:3929:39
9:33
#24416
20K
12.43 mi13:21:051:58:589:3429:06
9:22
#23926
Half
13.11 mi13:27:242:05:179:336:19
9:16
#23886
25K
15.53 mi13:51:062:28:599:3523:42
9:46
#23667
30K
18.64 mi14:22:283:00:219:4031:22
10:06
#23323
20M
20.00 mi14:35:283:13:219:4013:00
9:34
#23056
21M
21.00 mi14:45:553:23:489:4210:27
10:27
#22873
35K
21.75 mi14:53:003:30:539:427:05
9:28
#22790
23M
23.00 mi15:04:443:42:379:4111:44
9:22
#22528
24M
24.00 mi15:14:503:52:439:4210:06
10:06
#22473
40K
24.85 mi15:23:284:01:219:438:38
10:06
#22404
25.2M
25.20 mi15:27:284:05:219:444:00
11:36
#22398
Finish
26.22 mi15:36:424:14:359:439:14
9:04
#22300
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi25076147671476723856(Top 84%)14215(Top 88%)14215(Top 252%)
10K6.21 mi3.10 mi24715+36114580+18714580+18724319(Top 86%)14382(Top 89%)14382(Top 255%)
15K9.32 mi3.11 mi24416+29914440+14014440+14023856(Top 84%)14215(Top 88%)14215(Top 252%)
20K12.43 mi3.11 mi23926+49014213+22714213+22722462(Top 79%)13559(Top 84%)13559(Top 240%)
Half13.11 mi0.68 mi23886+4014190+2314190+2322793(Top 80%)13697(Top 85%)13697(Top 243%)
25K15.53 mi2.42 mi23667+21914092+9814092+9822704(Top 80%)13610(Top 85%)13610(Top 241%)
30K18.64 mi3.11 mi23323+34413901+19113901+19121891(Top 77%)13113(Top 81%)13113(Top 232%)
20M20.00 mi1.36 mi23056+26713753+14813753+14819472(Top 69%)11920(Top 74%)11920(Top 211%)
21M21.00 mi1.00 mi22873+18313651+10213651+10219841(Top 70%)11974(Top 74%)11974(Top 212%)
35K21.75 mi0.75 mi22790+8313602+4913602+4920220(Top 71%)12083(Top 75%)12083(Top 214%)
23M23.00 mi1.25 mi22528+26213465+13713465+13718108(Top 64%)11030(Top 68%)11030(Top 195%)
24M24.00 mi1.00 mi22473+5513418+4713418+4721637(Top 76%)12652(Top 79%)12652(Top 224%)
40K24.85 mi0.85 mi22404+6913364+5413364+5420771(Top 73%)12173(Top 76%)12173(Top 216%)
25.2M25.20 mi0.35 mi22398+613350+1413350+1422287(Top 78%)12937(Top 80%)12937(Top 229%)
Finish26.22 mi1.02 mi22300+9813297+5313297+5319337(Top 68%)11514(Top 71%)11514(Top 204%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21stories
+97ft-345ft

Overall

23856

Males

14215

M18-39

14215

5K→10K

3.1 - 6.2 mi

Top 86%
×5stories
+79ft-138ft

Overall

24319

Males

14382

M18-39

14382

10K→15K

6.2 - 9.3 mi

Top 84%
×3stories
+67ft-78ft

Overall

23856

Males

14215

M18-39

14215

15K→20K

9.3 - 12.4 mi

Top 79%
×5stories
+106ft-86ft

Overall

22462

Males

13559

M18-39

13559

20K→Half

12.4 - 13.1 mi

Top 80%
×2stories
+19ft-37ft

Overall

22793

Males

13697

M18-39

13697

Half→25K

13.1 - 15.5 mi

Top 80%
×4stories
+66ft-88ft

Overall

22704

Males

13610

M18-39

13610

25K→30K

15.5 - 18.6 mi

Top 77%
×9stories
+181ft-148ft

Overall

21891

Males

13113

M18-39

13113

30K→20M

18.6 - 20.0 mi

Top 69%
×5stories
+64ft-50ft

Overall

19472

Males

11920

M18-39

11920

20M→21M

20.0 - 21.0 mi

Top 70%
×8stories
+106ft-24ft

Overall

19841

Males

11974

M18-39

11974

21M→35K

21.0 - 21.8 mi

Top 71%
×7stories
+17ft-86ft

Overall

20220

Males

12083

M18-39

12083

35K→23M

21.8 - 23.0 mi

Top 64%
×5stories
+23ft-63ft

Overall

18108

Males

11030

M18-39

11030

23M→24M

23.0 - 24.0 mi

Top 76%
×6stories
+12ft-82ft

Overall

21637

Males

12652

M18-39

12652

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

20771

Males

12173

M18-39

12173

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

22287

Males

12937

M18-39

12937

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2stories
+22ft-21ft

Overall

19337

Males

11514

M18-39

11514

Passing Analysis

Category:
Athletes Passed
3011
Passed By
235
Net Change
+2776
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25076
5K → 10K43877+361#25076#24715
10K → 15K32324+299#24715#24416
15K → 20K4944+490#24416#23926
20K → Half411+40#23926#23886
Half → 25K24021+219#23886#23667
25K → 30K37935+344#23667#23323
30K → 20M2681+267#23323#23056
20M → 21M1863+183#23056#22873
21M → 35K907+83#22873#22790
35K → 23M2664+262#22790#22528
23M → 24M7520+55#22528#22473
24M → 40K8314+69#22473#22404
40K → 25.2M2519+6#22404#22398
25.2M → Finish1035+98#22398#22300
TOTALS3011235+2776
📊

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