Boston Marathon logo
BOSTON MARATHON 2025

David Harning

Bib: 4138•M

CO

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 7%
Gender (Male)
#0 / 16105
Top 12%
Division (M18-39)
#0 / 5642
Top 29%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:54
Rank: #3132
Start → 5K
19:54 | 6:24/mi
10K· 6.21 mi
39:30
Rank: #2768 (+364)
5K → 10K
19:36 | 6:19/mi
15K· 9.32 mi
59:46
Rank: #3086 (-318)
10K → 15K
20:16 | 6:31/mi
20K· 12.43 mi
1:19:32
Rank: #2846 (+240)
15K → 20K
19:46 | 6:22/mi
Half· 13.11 mi
1:23:47
Rank: #2806 (+40)
20K → Half
4:15 | 6:14/mi
25K· 15.53 mi
1:39:35
Rank: #2799 (+7)
Half → 25K
15:48 | 6:31/mi
30K· 18.64 mi
1:59:34
Rank: #2525 (+274)
25K → 30K
19:59 | 6:26/mi
20M
2:08:23
Rank: #2415 (+110)
30K → 20M
8:49 | 6:29/mi
21M
2:15:19
Rank: #2345 (+70)
20M → 21M
6:56 | 6:56/mi
35K· 21.75 mi
2:19:59
Rank: #2301 (+44)
21M → 35K
4:40 | 6:14/mi
23M
2:28:11
Rank: #2222 (+79)
35K → 23M
8:12 | 6:33/mi
24M
2:34:40
Rank: #2179 (+43)
23M → 24M
6:29 | 6:29/mi
40K· 24.85 mi
2:40:13
Rank: #2130 (+49)
24M → 40K
5:33 | 6:29/mi
25.2M
2:42:37
Rank: #2104 (+26)
40K → 25.2M
2:24 | 6:58/mi
Finish· 26.22 mi
2:49:03
Rank: #2088 (+16)
25.2M → Finish
6:26 | 6:19/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
Time1:23:47
Pace6:23 /mi
2nd Half
Distance13.11 mi
Time1:25:16
Pace6:30 /mi
📊Positive Split: 1.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:28:1019:546:2419:54
6:24
-
10K
6.21 mi10:47:4639:306:2119:36
6:19
-0:05
15K
9.32 mi11:08:0259:466:2520:16
6:31
+0:12
20K
12.43 mi11:27:481:19:326:2419:46
6:22
-0:09
Half
13.11 mi11:32:031:23:476:234:15
6:14
-0:08
25K
15.53 mi11:47:511:39:356:2515:48
6:31
+0:17
30K
18.64 mi12:07:501:59:346:2519:59
6:26
-0:05
20M
20.00 mi12:16:392:08:236:258:49
6:29
+0:03
21M
21.00 mi12:23:352:15:196:276:56
6:56
+0:27
35K
21.75 mi12:28:152:19:596:264:40
6:14
-0:42
23M
23.00 mi12:36:272:28:116:278:12
6:33
+0:19
24M
24.00 mi12:42:562:34:406:276:29
6:29
-0:04
40K
24.85 mi12:48:292:40:136:275:33
6:29
0:00
25.2M
25.20 mi12:50:532:42:376:272:24
6:58
+0:29
Finish
26.22 mi12:57:192:49:036:276:26
6:19
-0:39

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

6:14 /mi

Average Pace

6:27 /mi

Slowest Pace

6:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:39:43

94% of race

Time at Steady Pace

9:20

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:27 /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 mi10:28:1019:546:2419:54
6:24
#3132
10K
6.21 mi10:47:4639:306:2119:36
6:19
#2768
15K
9.32 mi11:08:0259:466:2520:16
6:31
#3086
20K
12.43 mi11:27:481:19:326:2419:46
6:22
#2846
Half
13.11 mi11:32:031:23:476:234:15
6:14
#2806
25K
15.53 mi11:47:511:39:356:2515:48
6:31
#2799
30K
18.64 mi12:07:501:59:346:2519:59
6:26
#2525
20M
20.00 mi12:16:392:08:236:258:49
6:29
#2415
21M
21.00 mi12:23:352:15:196:276:56
6:56
#2345
35K
21.75 mi12:28:152:19:596:264:40
6:14
#2301
23M
23.00 mi12:36:272:28:116:278:12
6:33
#2222
24M
24.00 mi12:42:562:34:406:276:29
6:29
#2179
40K
24.85 mi12:48:292:40:136:275:33
6:29
#2130
25.2M
25.20 mi12:50:532:42:376:272:24
6:58
#2104
Finish
26.22 mi12:57:192:49:036:276:26
6:19
#2088
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3132297529753693(Top 13%)3486(Top 22%)3486(Top 62%)
10K6.21 mi3.10 mi2768+3642636+3392636+3392470(Top 9%)2360(Top 15%)2360(Top 42%)
15K9.32 mi3.11 mi3086-3182939-3032939-3033693(Top 13%)3486(Top 22%)3486(Top 62%)
20K12.43 mi3.11 mi2846+2402713+2262713+2262317(Top 8%)2210(Top 14%)2210(Top 39%)
Half13.11 mi0.68 mi2806+402676+372676+372107(Top 7%)2011(Top 12%)2011(Top 36%)
25K15.53 mi2.42 mi2799+72670+62670+62957(Top 10%)2811(Top 17%)2811(Top 50%)
30K18.64 mi3.11 mi2525+2742411+2592411+2591682(Top 6%)1595(Top 10%)1595(Top 28%)
20M20.00 mi1.36 mi2415+1102303+1082303+1081575(Top 6%)1489(Top 9%)1489(Top 26%)
21M21.00 mi1.00 mi2345+702234+692234+691987(Top 7%)1870(Top 12%)1870(Top 33%)
35K21.75 mi0.75 mi2301+442193+412193+411379(Top 5%)1306(Top 8%)1306(Top 23%)
23M23.00 mi1.25 mi2222+792115+782115+781623(Top 6%)1516(Top 9%)1516(Top 27%)
24M24.00 mi1.00 mi2179+432072+432072+431956(Top 7%)1813(Top 11%)1813(Top 32%)
40K24.85 mi0.85 mi2130+492023+492023+491561(Top 5%)1445(Top 9%)1445(Top 26%)
25.2M25.20 mi0.35 mi2104+261997+261997+261360(Top 5%)1247(Top 8%)1247(Top 22%)
Finish26.22 mi1.02 mi2088+161981+161981+161935(Top 7%)1779(Top 11%)1779(Top 32%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×21stories
+97ft-345ft

Overall

3693

Males

3486

M18-39

3486

5K→10K

3.1 - 6.2 mi

Top 9%
×5stories
+79ft-138ft

Overall

2470

Males

2360

M18-39

2360

10K→15K

6.2 - 9.3 mi

Top 13%
×3stories
+67ft-78ft

Overall

3693

Males

3486

M18-39

3486

15K→20K

9.3 - 12.4 mi

Top 8%
×5stories
+106ft-86ft

Overall

2317

Males

2210

M18-39

2210

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

2107

Males

2011

M18-39

2011

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2957

Males

2811

M18-39

2811

25K→30K

15.5 - 18.6 mi

Top 6%
×9stories
+181ft-148ft

Overall

1682

Males

1595

M18-39

1595

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1575

Males

1489

M18-39

1489

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

1987

Males

1870

M18-39

1870

21M→35K

21.0 - 21.8 mi

Top 5%
×7stories
+17ft-86ft

Overall

1379

Males

1306

M18-39

1306

35K→23M

21.8 - 23.0 mi

Top 6%
×5stories
+23ft-63ft

Overall

1623

Males

1516

M18-39

1516

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

1956

Males

1813

M18-39

1813

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1561

Males

1445

M18-39

1445

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1360

Males

1247

M18-39

1247

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2stories
+22ft-21ft

Overall

1935

Males

1779

M18-39

1779

Passing Analysis

Category:
Athletes Passed
1545
Passed By
501
Net Change
+1044
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3132
5K → 10K38521+364#3132#2768
10K → 15K17335-318#2768#3086
15K → 20K2477+240#3086#2846
20K → Half422+40#2846#2806
Half → 25K7063+7#2806#2799
25K → 30K2795+274#2799#2525
30K → 20M1133+110#2525#2415
20M → 21M755+70#2415#2345
21M → 35K484+44#2345#2301
35K → 23M878+79#2301#2222
23M → 24M5512+43#2222#2179
24M → 40K6314+49#2179#2130
40K → 25.2M293+26#2130#2104
25.2M → Finish3519+16#2104#2088
TOTALS1545501+1044
📊

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