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BOSTON MARATHON 2025

Simon North

Bib: 18414•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
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
7:40/mi
23:49
↑ 97↓ 3451.5%
10K· 6.21 mi
7:41/mi
47:40
↑ 79↓ 1380.4%
15K· 9.32 mi
7:46/mi
1:11:48
↑ 67↓ 78
20K· 12.43 mi
7:48/mi
1:36:03
↑ 106↓ 860.1%
Half· 13.11 mi
7:42/mi
1:41:18
↑ 19↓ 370.5%
25K· 15.53 mi
8:37/mi
2:02:11
↑ 66↓ 880.2%
30K· 18.64 mi
9:15/mi
2:30:56
↑ 181↓ 1480.2%
20M
9:44/mi
2:44:10
↑ 64↓ 500.2%
21M
10:40/mi
2:54:50
↑ 106↓ 241.6%
35K· 21.75 mi
9:37/mi
3:02:02
↑ 17↓ 861.7%
23M
10:06/mi
3:14:41
↑ 23↓ 630.6%
24M
10:12/mi
3:24:53
↓ 821.3%
40K· 24.85 mi
9:54/mi
3:33:21
↓ 200.3%
25.2M
11:24/mi
3:37:17
↑ 13↓ 160.2%
Finish· 26.22 mi
10:19/mi
3:47:48
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:18
Pace7:44 /mi
2nd Half
Distance13.11 mi
Time2:06:30
Pace9:39 /mi
📊Positive Split: 24.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:1023:497:4023:49
7:40
-
10K
6.21 mi11:39:0147:407:4023:51
7:41
+0:01
15K
9.32 mi12:03:091:11:487:4224:08
7:46
+0:05
20K
12.43 mi12:27:241:36:037:4424:15
7:48
+0:02
Half
13.11 mi12:32:391:41:187:445:15
7:42
-0:06
25K
15.53 mi12:53:322:02:117:5220:53
8:37
+0:55
30K
18.64 mi13:22:172:30:568:0628:45
9:15
+0:38
20M
20.00 mi13:35:312:44:108:1213:14
9:44
+0:29
21M
21.00 mi13:46:112:54:508:2010:40
10:40
+0:56
35K
21.75 mi13:53:233:02:028:227:12
9:37
-1:03
23M
23.00 mi14:06:023:14:418:2812:39
10:06
+0:29
24M
24.00 mi14:16:143:24:538:3210:12
10:12
+0:06
40K
24.85 mi14:24:423:33:218:358:28
9:54
-0:18
25.2M
25.20 mi14:28:383:37:178:373:56
11:24
+1:30
Finish
26.22 mi14:39:093:47:488:4210:31
10:19
-1:05

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

7:40 /mi

Average Pace

8:42 /mi

Slowest Pace

11:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:02:11

54% of race

Time at Steady Pace

1:20:30

35% of race

Time at Slower Pace

25:07

11% of race

Average Pace: 8:41 /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 mi11:15:1023:497:4023:49
7:40
#13652
10K
6.21 mi11:39:0147:407:4023:51
7:41
#13676
15K
9.32 mi12:03:091:11:487:4224:08
7:46
#13774
20K
12.43 mi12:27:241:36:037:4424:15
7:48
#13606
Half
13.11 mi12:32:391:41:187:445:15
7:42
#13601
25K
15.53 mi12:53:322:02:117:5220:53
8:37
#14433
30K
18.64 mi13:22:172:30:568:0628:45
9:15
#15483
20M
20.00 mi13:35:312:44:108:1213:14
9:44
#15924
21M
21.00 mi13:46:112:54:508:2010:40
10:40
#16226
35K
21.75 mi13:53:233:02:028:227:12
9:37
#16417
23M
23.00 mi14:06:023:14:418:2812:39
10:06
#16783
24M
24.00 mi14:16:143:24:538:3210:12
10:12
#17141
40K
24.85 mi14:24:423:33:218:358:28
9:54
#17298
25.2M
25.20 mi14:28:383:37:178:373:56
11:24
#17432
Finish
26.22 mi14:39:093:47:488:4210:31
10:19
#17789
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi136529934993414088(Top 50%)9982(Top 62%)9982(Top 606%)
10K6.21 mi3.10 mi13676-249887+479887+4713672(Top 48%)9873(Top 61%)9873(Top 599%)
15K9.32 mi3.11 mi13774-989899-129899-1214088(Top 50%)9982(Top 62%)9982(Top 606%)
20K12.43 mi3.11 mi13606+1689780+1199780+11913310(Top 47%)9562(Top 59%)9562(Top 580%)
Half13.11 mi0.68 mi13601+59774+69774+613347(Top 47%)9647(Top 60%)9647(Top 585%)
25K15.53 mi2.42 mi14433-83210096-32210096-32217866(Top 63%)11464(Top 71%)11464(Top 696%)
30K18.64 mi3.11 mi15483-105010500-40410500-40418903(Top 67%)11786(Top 73%)11786(Top 715%)
20M20.00 mi1.36 mi15924-44110655-15510655-15520055(Top 71%)12176(Top 76%)12176(Top 739%)
21M21.00 mi1.00 mi16226-30210757-10210757-10220490(Top 72%)12253(Top 76%)12253(Top 744%)
35K21.75 mi0.75 mi16417-19110820-6310820-6320738(Top 73%)12314(Top 76%)12314(Top 747%)
23M23.00 mi1.25 mi16783-36610937-11710937-11720806(Top 73%)12295(Top 76%)12295(Top 746%)
24M24.00 mi1.00 mi17141-35811059-12211059-12221918(Top 77%)12764(Top 79%)12764(Top 775%)
40K24.85 mi0.85 mi17298-15711094-3511094-3520115(Top 71%)11842(Top 74%)11842(Top 719%)
25.2M25.20 mi0.35 mi17432-13411140-4611140-4621762(Top 77%)12659(Top 79%)12659(Top 768%)
Finish26.22 mi1.02 mi17789-35711281-14111281-14123832(Top 84%)13682(Top 85%)13682(Top 830%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21story building
+97ft-345ft

Overall

14088

Males

9982

M55-59

9982

5K→10K

3.1 - 6.2 mi

Top 48%
×5story building
+79ft-138ft

Overall

13672

Males

9873

M55-59

9873

10K→15K

6.2 - 9.3 mi

Top 50%
×3story building
+67ft-78ft

Overall

14088

Males

9982

M55-59

9982

15K→20K

9.3 - 12.4 mi

Top 47%
×5story building
+106ft-86ft

Overall

13310

Males

9562

M55-59

9562

20K→Half

12.4 - 13.1 mi

Top 47%
×2story building
+19ft-37ft

Overall

13347

Males

9647

M55-59

9647

Half→25K

13.1 - 15.5 mi

Top 63%
×4story building
+66ft-88ft

Overall

17866

Males

11464

M55-59

11464

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

18903

Males

11786

M55-59

11786

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

20055

Males

12176

M55-59

12176

20M→21M

20.0 - 21.0 mi

Top 72%
×8story building
+106ft-24ft

Overall

20490

Males

12253

M55-59

12253

21M→35K

21.0 - 21.8 mi

Top 73%
×7story building
+17ft-86ft

Overall

20738

Males

12314

M55-59

12314

35K→23M

21.8 - 23.0 mi

Top 73%
×5story building
+23ft-63ft

Overall

20806

Males

12295

M55-59

12295

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

21918

Males

12764

M55-59

12764

24M→40K

24.0 - 24.9 mi

Top 71%
×1story
+6ft-20ft

Overall

20115

Males

11842

M55-59

11842

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

21762

Males

12659

M55-59

12659

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2story building
+22ft-21ft

Overall

23832

Males

13682

M55-59

13682

Passing Analysis

Category:
Athletes Passed
1084
Passed By
5221
Net Change
-4137
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13652
5K → 10K270294-24#13652#13676
10K → 15K161259-98#13676#13774
15K → 20K287119+168#13774#13606
20K → Half3530+5#13606#13601
Half → 25K49881-832#13601#14433
25K → 30K611111-1050#14433#15483
30K → 20M37478-441#15483#15924
20M → 21M37339-302#15924#16226
21M → 35K28219-191#16226#16417
35K → 23M44410-366#16417#16783
23M → 24M21379-358#16783#17141
24M → 40K34191-157#17141#17298
40K → 25.2M7141-134#17298#17432
25.2M → Finish13370-357#17432#17789
TOTALS10845221-4137
📊

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