Boston Marathon logo
BOSTON MARATHON 2025

Daniel Niederjohn

Bib: 11196•M

GA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 47%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:23
Rank: #17878
Start → 5K
25:23 | 8:10/mi
10K· 6.21 mi
51:15
Rank: #18276 (-398)
5K → 10K
25:52 | 8:20/mi
15K· 9.32 mi
1:16:44
Rank: #17981 (+295)
10K → 15K
25:29 | 8:12/mi
20K· 12.43 mi
1:42:30
Rank: #17661 (+320)
15K → 20K
25:46 | 8:18/mi
Half· 13.11 mi
1:47:55
Rank: #17541 (+120)
20K → Half
5:25 | 7:56/mi
25K· 15.53 mi
2:07:41
Rank: #17064 (+477)
Half → 25K
19:46 | 8:09/mi
30K· 18.64 mi
2:32:41
Rank: #16152 (+912)
25K → 30K
25:00 | 8:03/mi
20M
2:43:35
Rank: #15691 (+461)
30K → 20M
10:54 | 8:01/mi
21M
2:51:44
Rank: #15228 (+463)
20M → 21M
8:09 | 8:09/mi
35K· 21.75 mi
2:57:24
Rank: #14999 (+229)
21M → 35K
5:40 | 7:34/mi
23M
3:07:14
Rank: #14600 (+399)
35K → 23M
9:50 | 7:51/mi
24M
3:14:48
Rank: #14311 (+289)
23M → 24M
7:34 | 7:34/mi
40K· 24.85 mi
3:21:22
Rank: #14063 (+248)
24M → 40K
6:34 | 7:41/mi
25.2M
3:24:04
Rank: #13866 (+197)
40K → 25.2M
2:42 | 7:50/mi
Finish· 26.22 mi
3:30:56
Rank: #13456 (+410)
25.2M → Finish
6:52 | 6:44/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 Half
Distance13.11 mi
Time1:47:55
Pace8:14 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:43:01
Pace7:52 /mi
📊Negative Split: 4.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:1225:238:1025:23
8:10
-
10K
6.21 mi11:22:0451:158:1525:52
8:20
+0:10
15K
9.32 mi11:47:331:16:448:1425:29
8:12
-0:08
20K
12.43 mi12:13:191:42:308:1525:46
8:18
+0:06
Half
13.11 mi12:18:441:47:558:145:25
7:56
-0:22
25K
15.53 mi12:38:302:07:418:1319:46
8:09
+0:13
30K
18.64 mi13:03:302:32:418:1125:00
8:03
-0:06
20M
20.00 mi13:14:242:43:358:1110:54
8:01
-0:02
21M
21.00 mi13:22:332:51:448:118:09
8:09
+0:08
35K
21.75 mi13:28:132:57:248:095:40
7:34
-0:35
23M
23.00 mi13:38:033:07:148:089:50
7:51
+0:17
24M
24.00 mi13:45:373:14:488:077:34
7:34
-0:17
40K
24.85 mi13:52:113:21:228:066:34
7:41
+0:07
25.2M
25.20 mi13:54:533:24:048:062:42
7:50
+0:09
Finish
26.22 mi14:01:453:30:568:036:52
6:44
-1:06

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

6:44 /mi

Average Pace

8:03 /mi

Slowest Pace

8:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

26:40

13% of race

Time at Steady Pace

2:12:38

63% of race

Time at Slower Pace

51:38

24% of race

Average Pace: 8:03 /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 mi10:56:1225:238:1025:23
8:10
#17878
10K
6.21 mi11:22:0451:158:1525:52
8:20
#18276
15K
9.32 mi11:47:331:16:448:1425:29
8:12
#17981
20K
12.43 mi12:13:191:42:308:1525:46
8:18
#17661
Half
13.11 mi12:18:441:47:558:145:25
7:56
#17541
25K
15.53 mi12:38:302:07:418:1319:46
8:09
#17064
30K
18.64 mi13:03:302:32:418:1125:00
8:03
#16152
20M
20.00 mi13:14:242:43:358:1110:54
8:01
#15691
21M
21.00 mi13:22:332:51:448:118:09
8:09
#15228
35K
21.75 mi13:28:132:57:248:095:40
7:34
#14999
23M
23.00 mi13:38:033:07:148:089:50
7:51
#14600
24M
24.00 mi13:45:373:14:488:077:34
7:34
#14311
40K
24.85 mi13:52:113:21:228:066:34
7:41
#14063
25.2M
25.20 mi13:54:533:24:048:062:42
7:50
#13866
Finish
26.22 mi14:01:453:30:568:036:52
6:44
#13456
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi17878115551155517388(Top 61%)11383(Top 71%)11383(Top 570%)
10K6.21 mi3.10 mi18276-39811731-17611731-17618696(Top 66%)11934(Top 74%)11934(Top 598%)
15K9.32 mi3.11 mi17981+29511609+12211609+12217388(Top 61%)11383(Top 71%)11383(Top 570%)
20K12.43 mi3.11 mi17661+32011473+13611473+13616887(Top 59%)11123(Top 69%)11123(Top 557%)
Half13.11 mi0.68 mi17541+12011432+4111432+4115332(Top 54%)10469(Top 65%)10469(Top 524%)
25K15.53 mi2.42 mi17064+47711209+22311209+22314974(Top 53%)10207(Top 63%)10207(Top 511%)
30K18.64 mi3.11 mi16152+91210790+41910790+41911719(Top 41%)8540(Top 53%)8540(Top 428%)
20M20.00 mi1.36 mi15691+46110552+23810552+23810579(Top 37%)7832(Top 49%)7832(Top 392%)
21M21.00 mi1.00 mi15228+46310326+22610326+2268268(Top 29%)6419(Top 40%)6419(Top 322%)
35K21.75 mi0.75 mi14999+22910219+10710219+1079163(Top 32%)6953(Top 43%)6953(Top 348%)
23M23.00 mi1.25 mi14600+39910009+21010009+2108963(Top 32%)6710(Top 42%)6710(Top 336%)
24M24.00 mi1.00 mi14311+2899853+1569853+1568165(Top 29%)6223(Top 39%)6223(Top 312%)
40K24.85 mi0.85 mi14063+2489711+1429711+1427961(Top 28%)5981(Top 37%)5981(Top 300%)
25.2M25.20 mi0.35 mi13866+1979595+1169595+1165068(Top 18%)4185(Top 26%)4185(Top 210%)
Finish26.22 mi1.02 mi13456+4109409+1869409+1864148(Top 15%)3551(Top 22%)3551(Top 178%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21stories
+97ft-345ft

Overall

17388

Males

11383

M50-54

11383

5K→10K

3.1 - 6.2 mi

Top 66%
×5stories
+79ft-138ft

Overall

18696

Males

11934

M50-54

11934

10K→15K

6.2 - 9.3 mi

Top 61%
×3stories
+67ft-78ft

Overall

17388

Males

11383

M50-54

11383

15K→20K

9.3 - 12.4 mi

Top 59%
×5stories
+106ft-86ft

Overall

16887

Males

11123

M50-54

11123

20K→Half

12.4 - 13.1 mi

Top 54%
×2stories
+19ft-37ft

Overall

15332

Males

10469

M50-54

10469

Half→25K

13.1 - 15.5 mi

Top 53%
×4stories
+66ft-88ft

Overall

14974

Males

10207

M50-54

10207

25K→30K

15.5 - 18.6 mi

Top 41%
×9stories
+181ft-148ft

Overall

11719

Males

8540

M50-54

8540

30K→20M

18.6 - 20.0 mi

Top 37%
×5stories
+64ft-50ft

Overall

10579

Males

7832

M50-54

7832

20M→21M

20.0 - 21.0 mi

Top 29%
×8stories
+106ft-24ft

Overall

8268

Males

6419

M50-54

6419

21M→35K

21.0 - 21.8 mi

Top 32%
×7stories
+17ft-86ft

Overall

9163

Males

6953

M50-54

6953

35K→23M

21.8 - 23.0 mi

Top 32%
×5stories
+23ft-63ft

Overall

8963

Males

6710

M50-54

6710

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

8165

Males

6223

M50-54

6223

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7961

Males

5981

M50-54

5981

40K→25.2M

24.9 - 25.2 mi

Top 18%
×1story
+13ft-16ft

Overall

5068

Males

4185

M50-54

4185

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2stories
+22ft-21ft

Overall

4148

Males

3551

M50-54

3551

Passing Analysis

Category:
Athletes Passed
5101
Passed By
679
Net Change
+4422
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17878
5K → 10K141539-398#17878#18276
10K → 15K35661+295#18276#17981
15K → 20K38161+320#17981#17661
20K → Half1244+120#17661#17541
Half → 25K4858+477#17541#17064
25K → 30K9120+912#17064#16152
30K → 20M4632+461#16152#15691
20M → 21M4630+463#15691#15228
21M → 35K2301+229#15228#14999
35K → 23M4001+399#14999#14600
23M → 24M2901+289#14600#14311
24M → 40K2491+248#14311#14063
40K → 25.2M1970+197#14063#13866
25.2M → Finish4100+410#13866#13456
TOTALS5101679+4422
📊

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