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BOSTON MARATHON 2025

Robert Norcross

Bib: 1000•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 3%
Gender (Male)
#0 / 16105
Top 4%
Masters (Masters Men)
#0 / 10463
Top 0.8%
Division (M40-44)
#0 / 2247
Top 3%
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
5:58/mi
18:33
↑ 97↓ 3451.5%
10K· 6.21 mi
5:50/mi
36:39
↑ 79↓ 1380.4%
15K· 9.32 mi
5:52/mi
54:53
↑ 67↓ 78
20K· 12.43 mi
5:57/mi
1:13:21
↑ 106↓ 860.1%
Half· 13.11 mi
5:49/mi
1:17:19
↑ 19↓ 370.5%
25K· 15.53 mi
5:57/mi
1:31:44
↑ 66↓ 880.2%
30K· 18.64 mi
6:14/mi
1:51:06
↑ 181↓ 1480.2%
20M
6:18/mi
1:59:39
↑ 64↓ 500.2%
21M
6:44/mi
2:06:23
↑ 106↓ 241.6%
35K· 21.75 mi
5:53/mi
2:10:47
↑ 17↓ 861.7%
23M
6:15/mi
2:18:36
↑ 23↓ 630.6%
24M
6:21/mi
2:24:57
↓ 821.3%
40K· 24.85 mi
6:27/mi
2:30:28
↓ 200.3%
25.2M
7:09/mi
2:32:56
↑ 13↓ 160.2%
Finish· 26.22 mi
6:10/mi
2:39:13
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:17:19
Pace5:54 /mi
2nd Half
Distance13.11 mi
Time1:21:54
Pace6:15 /mi
📊Positive Split: 5.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:5218:335:5818:33
5:58
-
10K
6.21 mi10:36:5836:395:5418:06
5:50
-0:08
15K
9.32 mi10:55:1254:535:5318:14
5:52
+0:02
20K
12.43 mi11:13:401:13:215:5418:28
5:57
+0:05
Half
13.11 mi11:17:381:17:195:543:58
5:49
-0:08
25K
15.53 mi11:32:031:31:445:5414:25
5:57
+0:08
30K
18.64 mi11:51:251:51:065:5819:22
6:14
+0:17
20M
20.00 mi11:59:581:59:395:598:33
6:18
+0:04
21M
21.00 mi12:06:422:06:236:016:44
6:44
+0:26
35K
21.75 mi12:11:062:10:476:014:24
5:53
-0:51
23M
23.00 mi12:18:552:18:366:027:49
6:15
+0:22
24M
24.00 mi12:25:162:24:576:026:21
6:21
+0:06
40K
24.85 mi12:30:472:30:286:035:31
6:27
+0:06
25.2M
25.20 mi12:33:152:32:566:042:28
7:09
+0:42
Finish
26.22 mi12:39:322:39:136:056:17
6:10
-0:59

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

5:49 /mi

Average Pace

6:05 /mi

Slowest Pace

7:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:36:08

60% of race

Time at Steady Pace

42:01

26% of race

Time at Slower Pace

21:04

13% of race

Average Pace: 6:04 /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 mi10:18:5218:335:5818:33
5:58
#982
10K
6.21 mi10:36:5836:395:5418:06
5:50
#802
15K
9.32 mi10:55:1254:535:5318:14
5:52
#761
20K
12.43 mi11:13:401:13:215:5418:28
5:57
#743
Half
13.11 mi11:17:381:17:195:543:58
5:49
#736
25K
15.53 mi11:32:031:31:445:5414:25
5:57
#707
30K
18.64 mi11:51:251:51:065:5819:22
6:14
#736
20M
20.00 mi11:59:581:59:395:598:33
6:18
#733
21M
21.00 mi12:06:422:06:236:016:44
6:44
#742
35K
21.75 mi12:11:062:10:476:014:24
5:53
#716
23M
23.00 mi12:18:552:18:366:027:49
6:15
#702
24M
24.00 mi12:25:162:24:576:026:21
6:21
#713
40K
24.85 mi12:30:472:30:286:035:31
6:27
#717
25.2M
25.20 mi12:33:152:32:566:042:28
7:09
#721
Finish
26.22 mi12:39:322:39:136:056:17
6:10
#735
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi982923923684(Top 2%)638(Top 4%)638(Top 28%)
10K6.21 mi3.10 mi802+180750+173750+173657(Top 2%)613(Top 4%)613(Top 27%)
15K9.32 mi3.11 mi761+41711+39711+39684(Top 2%)638(Top 4%)638(Top 28%)
20K12.43 mi3.11 mi743+18694+17694+17726(Top 3%)679(Top 4%)679(Top 30%)
Half13.11 mi0.68 mi736+7687+7687+7619(Top 2%)580(Top 4%)580(Top 26%)
25K15.53 mi2.42 mi707+29659+28659+28669(Top 2%)622(Top 4%)622(Top 28%)
30K18.64 mi3.11 mi736-29689-30689-301002(Top 4%)942(Top 6%)942(Top 42%)
20M20.00 mi1.36 mi733+3686+3686+3929(Top 3%)875(Top 5%)875(Top 39%)
21M21.00 mi1.00 mi742-9694-8694-81282(Top 5%)1211(Top 8%)1211(Top 54%)
35K21.75 mi0.75 mi716+26668+26668+26507(Top 2%)472(Top 3%)472(Top 21%)
23M23.00 mi1.25 mi702+14654+14654+14750(Top 3%)707(Top 4%)707(Top 31%)
24M24.00 mi1.00 mi713-11664-10664-101450(Top 5%)1354(Top 8%)1354(Top 60%)
40K24.85 mi0.85 mi717-4668-4668-41416(Top 5%)1310(Top 8%)1310(Top 58%)
25.2M25.20 mi0.35 mi721-4672-4672-41899(Top 7%)1712(Top 11%)1712(Top 76%)
Finish26.22 mi1.02 mi735-14685-13685-131392(Top 5%)1295(Top 8%)1295(Top 58%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21story building
+97ft-345ft

Overall

684

Males

638

M40-44

638

5K→10K

3.1 - 6.2 mi

Top 2%
×5story building
+79ft-138ft

Overall

657

Males

613

M40-44

613

10K→15K

6.2 - 9.3 mi

Top 2%
×3story building
+67ft-78ft

Overall

684

Males

638

M40-44

638

15K→20K

9.3 - 12.4 mi

Top 3%
×5story building
+106ft-86ft

Overall

726

Males

679

M40-44

679

20K→Half

12.4 - 13.1 mi

Top 2%
×2story building
+19ft-37ft

Overall

619

Males

580

M40-44

580

Half→25K

13.1 - 15.5 mi

Top 2%
×4story building
+66ft-88ft

Overall

669

Males

622

M40-44

622

25K→30K

15.5 - 18.6 mi

Top 4%
×9story building
+181ft-148ft

Overall

1002

Males

942

M40-44

942

30K→20M

18.6 - 20.0 mi

Top 3%
×5story building
+64ft-50ft

Overall

929

Males

875

M40-44

875

20M→21M

20.0 - 21.0 mi

Top 5%
×8story building
+106ft-24ft

Overall

1282

Males

1211

M40-44

1211

21M→35K

21.0 - 21.8 mi

Top 2%
×7story building
+17ft-86ft

Overall

507

Males

472

M40-44

472

35K→23M

21.8 - 23.0 mi

Top 3%
×5story building
+23ft-63ft

Overall

750

Males

707

M40-44

707

23M→24M

23.0 - 24.0 mi

Top 5%
×6story building
+12ft-82ft

Overall

1450

Males

1354

M40-44

1354

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1416

Males

1310

M40-44

1310

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

1899

Males

1712

M40-44

1712

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2story building
+22ft-21ft

Overall

1392

Males

1295

M40-44

1295

Passing Analysis

Category:
Athletes Passed
445
Passed By
198
Net Change
+247
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#982
5K → 10K1811+180#982#802
10K → 15K498+41#802#761
15K → 20K3517+18#761#743
20K → Half70+7#743#736
Half → 25K378+29#736#707
25K → 30K2453-29#707#736
30K → 20M1613+3#736#733
20M → 21M1726-9#733#742
21M → 35K260+26#742#716
35K → 23M206+14#716#702
23M → 24M819-11#702#713
24M → 40K812-4#713#717
40K → 25.2M59-4#717#721
25.2M → Finish1226-14#721#735
TOTALS445198+247
📊

Passing Visuals

Category:
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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