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BOSTON MARATHON 2025

Robert Nation

Bib: 1249•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 5%
Gender (Male)
#0 / 16105
Top 8%
Masters (Masters Men)
#0 / 10463
Top 2%
Division (M40-44)
#0 / 2247
Top 6%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:01
Rank: #1482
Start → 5K
19:01 | 6:07/mi
10K· 6.21 mi
37:55
Rank: #1435 (+47)
5K → 10K
18:54 | 6:05/mi
15K· 9.32 mi
56:52
Rank: #1403 (+32)
10K → 15K
18:57 | 6:06/mi
20K· 12.43 mi
1:15:57
Rank: #1383 (+20)
15K → 20K
19:05 | 6:09/mi
Half· 13.11 mi
1:20:07
Rank: #1380 (+3)
20K → Half
4:10 | 6:06/mi
25K· 15.53 mi
1:35:05
Rank: #1359 (+21)
Half → 25K
14:58 | 6:10/mi
30K· 18.64 mi
1:54:43
Rank: #1313 (+46)
25K → 30K
19:38 | 6:19/mi
20M
2:03:24
Rank: #1288 (+25)
30K → 20M
8:41 | 6:23/mi
21M
2:10:18
Rank: #1287 (+1)
20M → 21M
6:54 | 6:54/mi
35K· 21.75 mi
2:14:56
Rank: #1268 (+19)
21M → 35K
4:38 | 6:12/mi
23M
2:22:57
Rank: #1222 (+46)
35K → 23M
8:01 | 6:24/mi
24M
2:29:41
Rank: #1273 (-51)
23M → 24M
6:44 | 6:44/mi
40K· 24.85 mi
2:35:30
Rank: #1313 (-40)
24M → 40K
5:49 | 6:48/mi
25.2M
2:38:04
Rank: #1323 (-10)
40K → 25.2M
2:34 | 7:27/mi
Finish· 26.22 mi
2:44:44
Rank: #1347 (-24)
25.2M → Finish
6:40 | 6:33/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:20:07
Pace6:07 /mi
2nd Half
Distance13.11 mi
Time1:24:37
Pace6:27 /mi
📊Positive Split: 5.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:3719:016:0719:01
6:07
-
10K
6.21 mi10:38:3137:556:0618:54
6:05
-0:02
15K
9.32 mi10:57:2856:526:0618:57
6:06
+0:01
20K
12.43 mi11:16:331:15:576:0719:05
6:09
+0:03
Half
13.11 mi11:20:431:20:076:074:10
6:06
-0:03
25K
15.53 mi11:35:411:35:056:0714:58
6:10
+0:04
30K
18.64 mi11:55:191:54:436:0919:38
6:19
+0:09
20M
20.00 mi12:04:002:03:246:108:41
6:23
+0:04
21M
21.00 mi12:10:542:10:186:126:54
6:54
+0:31
35K
21.75 mi12:15:322:14:566:124:38
6:12
-0:42
23M
23.00 mi12:23:332:22:576:138:01
6:24
+0:12
24M
24.00 mi12:30:172:29:416:146:44
6:44
+0:20
40K
24.85 mi12:36:062:35:306:155:49
6:48
+0:04
25.2M
25.20 mi12:38:402:38:046:162:34
7:27
+0:39
Finish
26.22 mi12:45:202:44:446:176:40
6:33
-0:54

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

6:05 /mi

Average Pace

6:17 /mi

Slowest Pace

7:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:01:02

37% of race

Time at Steady Pace

1:15:01

46% of race

Time at Slower Pace

28:41

17% of race

Average Pace: 6:17 /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 mi10:19:3719:016:0719:01
6:07
#1482
10K
6.21 mi10:38:3137:556:0618:54
6:05
#1435
15K
9.32 mi10:57:2856:526:0618:57
6:06
#1403
20K
12.43 mi11:16:331:15:576:0719:05
6:09
#1383
Half
13.11 mi11:20:431:20:076:074:10
6:06
#1380
25K
15.53 mi11:35:411:35:056:0714:58
6:10
#1359
30K
18.64 mi11:55:191:54:436:0919:38
6:19
#1313
20M
20.00 mi12:04:002:03:246:108:41
6:23
#1288
21M
21.00 mi12:10:542:10:186:126:54
6:54
#1287
35K
21.75 mi12:15:322:14:566:124:38
6:12
#1268
23M
23.00 mi12:23:332:22:576:138:01
6:24
#1222
24M
24.00 mi12:30:172:29:416:146:44
6:44
#1273
40K
24.85 mi12:36:062:35:306:155:49
6:48
#1313
25.2M
25.20 mi12:38:402:38:046:162:34
7:27
#1323
Finish
26.22 mi12:45:202:44:446:176:40
6:33
#1347
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi1482141214121372(Top 5%)1304(Top 8%)1304(Top 58%)
10K6.21 mi3.10 mi1435+471365+471365+471410(Top 5%)1338(Top 8%)1338(Top 60%)
15K9.32 mi3.11 mi1403+321332+331332+331372(Top 5%)1304(Top 8%)1304(Top 58%)
20K12.43 mi3.11 mi1383+201312+201312+201332(Top 5%)1261(Top 8%)1261(Top 56%)
Half13.11 mi0.68 mi1380+31310+21310+21547(Top 5%)1470(Top 9%)1470(Top 65%)
25K15.53 mi2.42 mi1359+211288+221288+221350(Top 5%)1279(Top 8%)1279(Top 57%)
30K18.64 mi3.11 mi1313+461239+491239+491265(Top 4%)1194(Top 7%)1194(Top 53%)
20M20.00 mi1.36 mi1288+251215+241215+241207(Top 4%)1138(Top 7%)1138(Top 51%)
21M21.00 mi1.00 mi1287+11213+21213+21860(Top 7%)1751(Top 11%)1751(Top 78%)
35K21.75 mi0.75 mi1268+191195+181195+181195(Top 4%)1126(Top 7%)1126(Top 50%)
23M23.00 mi1.25 mi1222+461150+451150+451140(Top 4%)1076(Top 7%)1076(Top 48%)
24M24.00 mi1.00 mi1273-511198-481198-483106(Top 11%)2802(Top 17%)2802(Top 125%)
40K24.85 mi0.85 mi1313-401237-391237-392819(Top 10%)2545(Top 16%)2545(Top 113%)
25.2M25.20 mi0.35 mi1323-101246-91246-93065(Top 11%)2706(Top 17%)2706(Top 120%)
Finish26.22 mi1.02 mi1347-241268-221268-222996(Top 11%)2664(Top 17%)2664(Top 119%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1372

Males

1304

M40-44

1304

5K→10K

3.1 - 6.2 mi

Top 5%
×5stories
+79ft-138ft

Overall

1410

Males

1338

M40-44

1338

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1372

Males

1304

M40-44

1304

15K→20K

9.3 - 12.4 mi

Top 5%
×5stories
+106ft-86ft

Overall

1332

Males

1261

M40-44

1261

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1547

Males

1470

M40-44

1470

Half→25K

13.1 - 15.5 mi

Top 5%
×4stories
+66ft-88ft

Overall

1350

Males

1279

M40-44

1279

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1265

Males

1194

M40-44

1194

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

1207

Males

1138

M40-44

1138

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

1860

Males

1751

M40-44

1751

21M→35K

21.0 - 21.8 mi

Top 4%
×7stories
+17ft-86ft

Overall

1195

Males

1126

M40-44

1126

35K→23M

21.8 - 23.0 mi

Top 4%
×5stories
+23ft-63ft

Overall

1140

Males

1076

M40-44

1076

23M→24M

23.0 - 24.0 mi

Top 11%
×6stories
+12ft-82ft

Overall

3106

Males

2802

M40-44

2802

24M→40K

24.0 - 24.9 mi

Top 10%
×1story
+6ft-20ft

Overall

2819

Males

2545

M40-44

2545

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

3065

Males

2706

M40-44

2706

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

2996

Males

2664

M40-44

2664

Passing Analysis

Category:
Athletes Passed
540
Passed By
405
Net Change
+135
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1482
5K → 10K9851+47#1482#1435
10K → 15K6634+32#1435#1403
15K → 20K6040+20#1403#1383
20K → Half118+3#1383#1380
Half → 25K4524+21#1380#1359
25K → 30K7428+46#1359#1313
30K → 20M3914+25#1313#1288
20M → 21M2524+1#1288#1287
21M → 35K289+19#1287#1268
35K → 23M6115+46#1268#1222
23M → 24M960-51#1222#1273
24M → 40K646-40#1273#1313
40K → 25.2M414-10#1313#1323
25.2M → Finish1438-24#1323#1347
TOTALS540405+135
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing