Boston Marathon logo
BOSTON MARATHON 2025

Zachary Keller

Bib: 793•M

OH

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 4%
Gender (Male)
#0 / 16105
Top 7%
Division (M18-39)
#0 / 5642
Top 16%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:13
Rank: #729
Start → 5K
18:13 | 5:52/mi
10K· 6.21 mi
36:32
Rank: #752 (-23)
5K → 10K
18:19 | 5:54/mi
15K· 9.32 mi
54:56
Rank: #774 (-22)
10K → 15K
18:24 | 5:55/mi
20K· 12.43 mi
1:13:25
Rank: #756 (+18)
15K → 20K
18:29 | 5:57/mi
Half· 13.11 mi
1:17:30
Rank: #767 (-11)
20K → Half
4:05 | 5:59/mi
25K· 15.53 mi
1:32:17
Rank: #800 (-33)
Half → 25K
14:47 | 6:06/mi
30K· 18.64 mi
1:51:50
Rank: #826 (-26)
25K → 30K
19:33 | 6:18/mi
20M
2:00:50
Rank: #865 (-39)
30K → 20M
9:00 | 6:37/mi
21M
2:07:57
Rank: #914 (-49)
20M → 21M
7:07 | 7:07/mi
35K· 21.75 mi
2:12:46
Rank: #941 (-27)
21M → 35K
4:49 | 6:26/mi
23M
2:21:22
Rank: #1001 (-60)
35K → 23M
8:36 | 6:52/mi
24M
2:27:53
Rank: #1024 (-23)
23M → 24M
6:31 | 6:31/mi
40K· 24.85 mi
2:33:55
Rank: #1090 (-66)
24M → 40K
6:02 | 7:03/mi
25.2M
2:36:31
Rank: #1112 (-22)
40K → 25.2M
2:36 | 7:32/mi
Finish· 26.22 mi
2:43:08
Rank: #1134 (-22)
25.2M → Finish
6:37 | 6:30/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
Time1:17:30
Pace5:55 /mi
2nd Half
Distance13.11 mi
Time1:25:38
Pace6:32 /mi
📊Positive Split: 10.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:2018:135:5218:13
5:52
-
10K
6.21 mi10:36:3936:325:5318:19
5:54
+0:02
15K
9.32 mi10:55:0354:565:5418:24
5:55
+0:01
20K
12.43 mi11:13:321:13:255:5418:29
5:57
+0:02
Half
13.11 mi11:17:371:17:305:554:05
5:59
+0:02
25K
15.53 mi11:32:241:32:175:5614:47
6:06
+0:07
30K
18.64 mi11:51:571:51:506:0019:33
6:18
+0:12
20M
20.00 mi12:00:572:00:506:029:00
6:37
+0:19
21M
21.00 mi12:08:042:07:576:067:07
7:07
+0:30
35K
21.75 mi12:12:532:12:466:064:49
6:26
-0:41
23M
23.00 mi12:21:292:21:226:098:36
6:52
+0:26
24M
24.00 mi12:28:002:27:536:106:31
6:31
-0:21
40K
24.85 mi12:34:022:33:556:126:02
7:03
+0:32
25.2M
25.20 mi12:36:382:36:316:132:36
7:32
+0:29
Finish
26.22 mi12:43:152:43:086:146:37
6:30
-1:02

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

5:52 /mi

Average Pace

6:14 /mi

Slowest Pace

7:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:17

57% of race

Time at Steady Pace

46:30

29% of race

Time at Slower Pace

24:21

15% of race

Average Pace: 6:13 /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 mi10:18:2018:135:5218:13
5:52
#729
10K
6.21 mi10:36:3936:325:5318:19
5:54
#752
15K
9.32 mi10:55:0354:565:5418:24
5:55
#774
20K
12.43 mi11:13:321:13:255:5418:29
5:57
#756
Half
13.11 mi11:17:371:17:305:554:05
5:59
#767
25K
15.53 mi11:32:241:32:175:5614:47
6:06
#800
30K
18.64 mi11:51:571:51:506:0019:33
6:18
#826
20M
20.00 mi12:00:572:00:506:029:00
6:37
#865
21M
21.00 mi12:08:042:07:576:067:07
7:07
#914
35K
21.75 mi12:12:532:12:466:064:49
6:26
#941
23M
23.00 mi12:21:292:21:226:098:36
6:52
#1001
24M
24.00 mi12:28:002:27:536:106:31
6:31
#1024
40K
24.85 mi12:34:022:33:556:126:02
7:03
#1090
25.2M
25.20 mi12:36:382:36:316:132:36
7:32
#1112
Finish
26.22 mi12:43:152:43:086:146:37
6:30
#1134
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi729678678814(Top 3%)763(Top 5%)763(Top 14%)
10K6.21 mi3.10 mi752-23701-23701-23814(Top 3%)763(Top 5%)763(Top 14%)
15K9.32 mi3.11 mi774-22723-22723-22814(Top 3%)763(Top 5%)763(Top 14%)
20K12.43 mi3.11 mi756+18707+16707+16745(Top 3%)697(Top 4%)697(Top 12%)
Half13.11 mi0.68 mi767-11717-10717-101102(Top 4%)1044(Top 6%)1044(Top 19%)
25K15.53 mi2.42 mi800-33749-32749-321082(Top 4%)1020(Top 6%)1020(Top 18%)
30K18.64 mi3.11 mi826-26776-27776-271179(Top 4%)1113(Top 7%)1113(Top 20%)
20M20.00 mi1.36 mi865-39814-38814-382093(Top 7%)1980(Top 12%)1980(Top 35%)
21M21.00 mi1.00 mi914-49859-45859-452715(Top 10%)2518(Top 16%)2518(Top 45%)
35K21.75 mi0.75 mi941-27885-26885-262141(Top 8%)2000(Top 12%)2000(Top 35%)
23M23.00 mi1.25 mi1001-60943-58943-583019(Top 11%)2758(Top 17%)2758(Top 49%)
24M24.00 mi1.00 mi1024-23965-22965-222093(Top 7%)1940(Top 12%)1940(Top 34%)
40K24.85 mi0.85 mi1090-661027-621027-624173(Top 15%)3610(Top 22%)3610(Top 64%)
25.2M25.20 mi0.35 mi1112-221048-211048-213488(Top 12%)3032(Top 19%)3032(Top 54%)
Finish26.22 mi1.02 mi1134-221068-201068-202756(Top 10%)2463(Top 15%)2463(Top 44%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

814

Males

763

M18-39

763

5K→10K

3.1 - 6.2 mi

Top 3%
×5stories
+79ft-138ft

Overall

814

Males

763

M18-39

763

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

814

Males

763

M18-39

763

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

745

Males

697

M18-39

697

20K→Half

12.4 - 13.1 mi

Top 4%
×2stories
+19ft-37ft

Overall

1102

Males

1044

M18-39

1044

Half→25K

13.1 - 15.5 mi

Top 4%
×4stories
+66ft-88ft

Overall

1082

Males

1020

M18-39

1020

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1179

Males

1113

M18-39

1113

30K→20M

18.6 - 20.0 mi

Top 7%
×5stories
+64ft-50ft

Overall

2093

Males

1980

M18-39

1980

20M→21M

20.0 - 21.0 mi

Top 10%
×8stories
+106ft-24ft

Overall

2715

Males

2518

M18-39

2518

21M→35K

21.0 - 21.8 mi

Top 8%
×7stories
+17ft-86ft

Overall

2141

Males

2000

M18-39

2000

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

3019

Males

2758

M18-39

2758

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

2093

Males

1940

M18-39

1940

24M→40K

24.0 - 24.9 mi

Top 15%
×1story
+6ft-20ft

Overall

4173

Males

3610

M18-39

3610

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3488

Males

3032

M18-39

3032

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2stories
+22ft-21ft

Overall

2756

Males

2463

M18-39

2463

Passing Analysis

Category:
Athletes Passed
199
Passed By
604
Net Change
-405
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#729
5K → 10K2649-23#729#752
10K → 15K1941-22#752#774
15K → 20K3517+18#774#756
20K → Half011-11#756#767
Half → 25K1548-33#767#800
25K → 30K2955-26#800#826
30K → 20M847-39#826#865
20M → 21M958-49#865#914
21M → 35K1239-27#914#941
35K → 23M1070-60#941#1001
23M → 24M1235-23#1001#1024
24M → 40K470-66#1024#1090
40K → 25.2M527-22#1090#1112
25.2M → Finish1537-22#1112#1134
TOTALS199604-405
📊

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