Boston Marathon logo
BOSTON MARATHON 2025

Garrett Holzer

Bib: 30304•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
10:17/mi
31:56
↑ 97↓ 3451.5%
10K· 6.21 mi
10:15/mi
1:03:46
↑ 79↓ 1380.4%
15K· 9.32 mi
10:16/mi
1:35:40
↑ 67↓ 78
20K· 12.43 mi
10:49/mi
2:09:17
↑ 106↓ 860.1%
Half· 13.11 mi
10:19/mi
2:16:19
↑ 19↓ 370.5%
25K· 15.53 mi
11:48/mi
2:44:56
↑ 66↓ 880.2%
30K· 18.64 mi
12:20/mi
3:23:15
↑ 181↓ 1480.2%
20M
12:50/mi
3:40:41
↑ 64↓ 500.2%
21M
14:29/mi
3:55:10
↑ 106↓ 241.6%
35K· 21.75 mi
13:25/mi
4:05:12
↑ 17↓ 861.7%
23M
13:54/mi
4:22:36
↑ 23↓ 630.6%
24M
12:55/mi
4:35:31
↓ 821.3%
40K· 24.85 mi
13:36/mi
4:47:09
↓ 200.3%
25.2M
14:21/mi
4:52:06
↑ 13↓ 160.2%
Finish· 26.22 mi
10:49/mi
5:03:07
↑ 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
Time2:16:19
Pace10:24 /mi
2nd Half
Distance13.11 mi
Time2:46:48
Pace12:43 /mi
📊Positive Split: 22.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:3531:5610:1731:56
10:17
-
10K
6.21 mi12:24:251:03:4610:1631:50
10:15
-0:02
15K
9.32 mi12:56:191:35:4010:1631:54
10:16
+0:01
20K
12.43 mi13:29:562:09:1710:2433:37
10:49
+0:33
Half
13.11 mi13:36:582:16:1910:247:02
10:19
-0:30
25K
15.53 mi14:05:352:44:5610:3728:37
11:48
+1:29
30K
18.64 mi14:43:543:23:1510:5438:19
12:20
+0:32
20M
20.00 mi15:01:203:40:4111:0217:26
12:50
+0:30
21M
21.00 mi15:15:493:55:1011:1214:29
14:29
+1:39
35K
21.75 mi15:25:514:05:1211:1610:02
13:25
-1:04
23M
23.00 mi15:43:154:22:3611:2517:24
13:54
+0:29
24M
24.00 mi15:56:104:35:3111:2912:55
12:55
-0:59
40K
24.85 mi16:07:484:47:0911:3311:38
13:36
+0:41
25.2M
25.20 mi16:12:454:52:0611:354:57
14:21
+0:45
Finish
26.22 mi16:23:465:03:0711:3411:01
10:49
-3:32

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

10:15 /mi

Average Pace

11:34 /mi

Slowest Pace

14:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:27:20

49% of race

Time at Steady Pace

1:37:17

32% of race

Time at Slower Pace

58:30

19% of race

Average Pace: 11:34 /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 mi11:52:3531:5610:1731:56
10:17
#26257
10K
6.21 mi12:24:251:03:4610:1631:50
10:15
#26033
15K
9.32 mi12:56:191:35:4010:1631:54
10:16
#25850
20K
12.43 mi13:29:562:09:1710:2433:37
10:49
#25795
Half
13.11 mi13:36:582:16:1910:247:02
10:19
#25790
25K
15.53 mi14:05:352:44:5610:3728:37
11:48
#25900
30K
18.64 mi14:43:543:23:1510:5438:19
12:20
#25916
20M
20.00 mi15:01:203:40:4111:0217:26
12:50
#25968
21M
21.00 mi15:15:493:55:1011:1214:29
14:29
#26038
35K
21.75 mi15:25:514:05:1211:1610:02
13:25
#26103
23M
23.00 mi15:43:154:22:3611:2517:24
13:54
#26220
24M
24.00 mi15:56:104:35:3111:2912:55
12:55
#26251
40K
24.85 mi16:07:484:47:0911:3311:38
13:36
#26292
25.2M
25.20 mi16:12:454:52:0611:354:57
14:21
#26306
Finish
26.22 mi16:23:465:03:0711:3411:01
10:49
#26277
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi26257152921529225535(Top 90%)14948(Top 93%)14948(Top 265%)
10K6.21 mi3.10 mi26033+22415171+12115171+12125823(Top 91%)15062(Top 94%)15062(Top 267%)
15K9.32 mi3.11 mi25850+18315089+8215089+8225535(Top 90%)14948(Top 93%)14948(Top 265%)
20K12.43 mi3.11 mi25795+5515060+2915060+2925749(Top 91%)15014(Top 93%)15014(Top 266%)
Half13.11 mi0.68 mi25790+5150601506025480(Top 90%)14883(Top 92%)14883(Top 264%)
25K15.53 mi2.42 mi25900-11015092-3215092-3226211(Top 92%)15166(Top 94%)15166(Top 269%)
30K18.64 mi3.11 mi25916-1615071+2115071+2125985(Top 91%)14984(Top 93%)14984(Top 266%)
20M20.00 mi1.36 mi25968-5215082-1115082-1126284(Top 93%)15061(Top 94%)15061(Top 267%)
21M21.00 mi1.00 mi26038-7015105-2315105-2326698(Top 94%)15209(Top 94%)15209(Top 270%)
35K21.75 mi0.75 mi26103-6515125-2015125-2027308(Top 96%)15493(Top 96%)15493(Top 275%)
23M23.00 mi1.25 mi26220-11715160-3515160-3527236(Top 96%)15445(Top 96%)15445(Top 274%)
24M24.00 mi1.00 mi26251-3115159+115159+126769(Top 94%)15183(Top 94%)15183(Top 269%)
40K24.85 mi0.85 mi26292-4115173-1415173-1426858(Top 95%)15210(Top 94%)15210(Top 270%)
25.2M25.20 mi0.35 mi26306-1415176-315176-326615(Top 94%)15072(Top 94%)15072(Top 267%)
Finish26.22 mi1.02 mi26277+2915162+1415162+1424981(Top 88%)14271(Top 89%)14271(Top 253%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21story building
+97ft-345ft

Overall

25535

Males

14948

M18-39

14948

5K→10K

3.1 - 6.2 mi

Top 91%
×5story building
+79ft-138ft

Overall

25823

Males

15062

M18-39

15062

10K→15K

6.2 - 9.3 mi

Top 90%
×3story building
+67ft-78ft

Overall

25535

Males

14948

M18-39

14948

15K→20K

9.3 - 12.4 mi

Top 91%
×5story building
+106ft-86ft

Overall

25749

Males

15014

M18-39

15014

20K→Half

12.4 - 13.1 mi

Top 90%
×2story building
+19ft-37ft

Overall

25480

Males

14883

M18-39

14883

Half→25K

13.1 - 15.5 mi

Top 92%
×4story building
+66ft-88ft

Overall

26211

Males

15166

M18-39

15166

25K→30K

15.5 - 18.6 mi

Top 91%
×9story building
+181ft-148ft

Overall

25985

Males

14984

M18-39

14984

30K→20M

18.6 - 20.0 mi

Top 93%
×5story building
+64ft-50ft

Overall

26284

Males

15061

M18-39

15061

20M→21M

20.0 - 21.0 mi

Top 94%
×8story building
+106ft-24ft

Overall

26698

Males

15209

M18-39

15209

21M→35K

21.0 - 21.8 mi

Top 96%
×7story building
+17ft-86ft

Overall

27308

Males

15493

M18-39

15493

35K→23M

21.8 - 23.0 mi

Top 96%
×5story building
+23ft-63ft

Overall

27236

Males

15445

M18-39

15445

23M→24M

23.0 - 24.0 mi

Top 94%
×6story building
+12ft-82ft

Overall

26769

Males

15183

M18-39

15183

24M→40K

24.0 - 24.9 mi

Top 95%
×1story
+6ft-20ft

Overall

26858

Males

15210

M18-39

15210

40K→25.2M

24.9 - 25.2 mi

Top 94%
×1story
+13ft-16ft

Overall

26615

Males

15072

M18-39

15072

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2story building
+22ft-21ft

Overall

24981

Males

14271

M18-39

14271

Passing Analysis

Category:
Athletes Passed
1008
Passed By
1028
Net Change
-20
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26257
5K → 10K30177+224#26257#26033
10K → 15K22037+183#26033#25850
15K → 20K15095+55#25850#25795
20K → Half2722+5#25795#25790
Half → 25K57167-110#25790#25900
25K → 30K101117-16#25900#25916
30K → 20M3385-52#25916#25968
20M → 21M1787-70#25968#26038
21M → 35K1479-65#26038#26103
35K → 23M10127-117#26103#26220
23M → 24M1748-31#26220#26251
24M → 40K1253-41#26251#26292
40K → 25.2M721-14#26292#26306
25.2M → Finish4213+29#26306#26277
TOTALS10081028-20
📊

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