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BOSTON MARATHON 2025

Nathan Stomberg

Bib: 3156•M

NC

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 9%
Gender (Male)
#0 / 16105
Top 16%
Division (M18-39)
#0 / 5642
Top 36%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:18
Rank: #4089
Start → 5K
6:32/mi
20:18 split
10K· 6.21 mi
40:43
Rank: #4153 (-64)
5K → 10K
6:34/mi
20:25 split
15K· 9.32 mi
1:01:04
Rank: #4044 (+109)
10K → 15K
6:33/mi
20:21 split
20K· 12.43 mi
1:21:27
Rank: #3843 (+201)
15K → 20K
6:34/mi
20:23 split
Half· 13.11 mi
1:25:54
Rank: #3844 (-1)
20K → Half
6:31/mi
4:27 split
25K· 15.53 mi
1:41:43
Rank: #3676 (+168)
Half → 25K
6:31/mi
15:49 split
30K· 18.64 mi
2:02:01
Rank: #3301 (+375)
25K → 30K
6:32/mi
20:18 split
20M
2:10:54
Rank: #3132 (+169)
30K → 20M
6:32/mi
8:53 split
21M
2:17:40
Rank: #2982 (+150)
20M → 21M
6:46/mi
6:46 split
35K· 21.75 mi
2:22:25
Rank: #2896 (+86)
21M → 35K
6:21/mi
4:45 split
23M
2:30:40
Rank: #2796 (+100)
35K → 23M
6:35/mi
8:15 split
24M
2:37:05
Rank: #2708 (+88)
23M → 24M
6:25/mi
6:25 split
40K· 24.85 mi
2:42:50
Rank: #2662 (+46)
24M → 40K
6:44/mi
5:45 split
25.2M
2:45:22
Rank: #2657 (+5)
40K → 25.2M
7:21/mi
2:32 split
Finish· 26.22 mi
2:52:14
Rank: #2680 (-23)
25.2M → Finish
6:44/mi
6:52 split

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:25:54
Pace6:33 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:26:20
Pace6:35 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:4920:186:3220:18
6:32
-
10K
6.21 mi10:42:1440:436:3320:25
6:34
+0:02
15K
9.32 mi11:02:351:01:046:3320:21
6:33
-0:01
20K
12.43 mi11:22:581:21:276:3320:23
6:34
+0:01
Half
13.11 mi11:27:251:25:546:334:27
6:31
-0:03
25K
15.53 mi11:43:141:41:436:3315:49
6:31
0:00
30K
18.64 mi12:03:322:02:016:3320:18
6:32
+0:01
20M
20.00 mi12:12:252:10:546:338:53
6:32
0:00
21M
21.00 mi12:19:112:17:406:336:46
6:46
+0:14
35K
21.75 mi12:23:562:22:256:334:45
6:21
-0:25
23M
23.00 mi12:32:112:30:406:338:15
6:35
+0:14
24M
24.00 mi12:38:362:37:056:336:25
6:25
-0:10
40K
24.85 mi12:44:212:42:506:335:45
6:44
+0:19
25.2M
25.20 mi12:46:532:45:226:342:32
7:21
+0:37
Finish
26.22 mi12:53:452:52:146:346:52
6:44
-0:37

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

6:21 /mi

Average Pace

6:34 /mi

Slowest Pace

7:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:49:42

99% of race

Time at Steady Pace

2:32

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:34 /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 mi10:21:4920:186:3220:18
6:32
#4089
10K
6.21 mi10:42:1440:436:3320:25
6:34
#4153
15K
9.32 mi11:02:351:01:046:3320:21
6:33
#4044
20K
12.43 mi11:22:581:21:276:3320:23
6:34
#3843
Half
13.11 mi11:27:251:25:546:334:27
6:31
#3844
25K
15.53 mi11:43:141:41:436:3315:49
6:31
#3676
30K
18.64 mi12:03:322:02:016:3320:18
6:32
#3301
20M
20.00 mi12:12:252:10:546:338:53
6:32
#3132
21M
21.00 mi12:19:112:17:406:336:46
6:46
#2982
35K
21.75 mi12:23:562:22:256:334:45
6:21
#2896
23M
23.00 mi12:32:112:30:406:338:15
6:35
#2796
24M
24.00 mi12:38:362:37:056:336:25
6:25
#2708
40K
24.85 mi12:44:212:42:506:335:45
6:44
#2662
25.2M
25.20 mi12:46:532:45:226:342:32
7:21
#2657
Finish
26.22 mi12:53:452:52:146:346:52
6:44
#2680
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4089385638563886(Top 14%)3666(Top 23%)3666(Top 65%)
10K6.21 mi3.10 mi4153-643914-583914-584238(Top 15%)3983(Top 25%)3983(Top 71%)
15K9.32 mi3.11 mi4044+1093813+1013813+1013886(Top 14%)3666(Top 23%)3666(Top 65%)
20K12.43 mi3.11 mi3843+2013623+1903623+1903483(Top 12%)3298(Top 20%)3298(Top 58%)
Half13.11 mi0.68 mi3844-13621+23621+23848(Top 14%)3628(Top 23%)3628(Top 64%)
25K15.53 mi2.42 mi3676+1683473+1483473+1483021(Top 11%)2871(Top 18%)2871(Top 51%)
30K18.64 mi3.11 mi3301+3753127+3463127+3462138(Top 8%)2030(Top 13%)2030(Top 36%)
20M20.00 mi1.36 mi3132+1692969+1582969+1581782(Top 6%)1688(Top 10%)1688(Top 30%)
21M21.00 mi1.00 mi2982+1502829+1402829+1401439(Top 5%)1359(Top 8%)1359(Top 24%)
35K21.75 mi0.75 mi2896+862749+802749+801844(Top 6%)1733(Top 11%)1733(Top 31%)
23M23.00 mi1.25 mi2796+1002652+972652+971806(Top 6%)1692(Top 11%)1692(Top 30%)
24M24.00 mi1.00 mi2708+882566+862566+861745(Top 6%)1630(Top 10%)1630(Top 29%)
40K24.85 mi0.85 mi2662+462523+432523+432511(Top 9%)2293(Top 14%)2293(Top 41%)
25.2M25.20 mi0.35 mi2657+52517+62517+62776(Top 10%)2478(Top 15%)2478(Top 44%)
Finish26.22 mi1.02 mi2680-232536-192536-194124(Top 15%)3527(Top 22%)3527(Top 63%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21story building
+97ft-345ft

Overall

3886

Males

3666

M18-39

3666

5K→10K

3.1 - 6.2 mi

Top 15%
×5story building
+79ft-138ft

Overall

4238

Males

3983

M18-39

3983

10K→15K

6.2 - 9.3 mi

Top 14%
×3story building
+67ft-78ft

Overall

3886

Males

3666

M18-39

3666

15K→20K

9.3 - 12.4 mi

Top 12%
×5story building
+106ft-86ft

Overall

3483

Males

3298

M18-39

3298

20K→Half

12.4 - 13.1 mi

Top 14%
×2story building
+19ft-37ft

Overall

3848

Males

3628

M18-39

3628

Half→25K

13.1 - 15.5 mi

Top 11%
×4story building
+66ft-88ft

Overall

3021

Males

2871

M18-39

2871

25K→30K

15.5 - 18.6 mi

Top 8%
×9story building
+181ft-148ft

Overall

2138

Males

2030

M18-39

2030

30K→20M

18.6 - 20.0 mi

Top 6%
×5story building
+64ft-50ft

Overall

1782

Males

1688

M18-39

1688

20M→21M

20.0 - 21.0 mi

Top 5%
×8story building
+106ft-24ft

Overall

1439

Males

1359

M18-39

1359

21M→35K

21.0 - 21.8 mi

Top 6%
×7story building
+17ft-86ft

Overall

1844

Males

1733

M18-39

1733

35K→23M

21.8 - 23.0 mi

Top 6%
×5story building
+23ft-63ft

Overall

1806

Males

1692

M18-39

1692

23M→24M

23.0 - 24.0 mi

Top 6%
×6story building
+12ft-82ft

Overall

1745

Males

1630

M18-39

1630

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2511

Males

2293

M18-39

2293

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2776

Males

2478

M18-39

2478

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2story building
+22ft-21ft

Overall

4124

Males

3527

M18-39

3527

Passing Analysis

Category:
Athletes Passed
1764
Passed By
355
Net Change
+1409
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4089
5K → 10K117181-64#4089#4153
10K → 15K15344+109#4153#4044
15K → 20K21817+201#4044#3843
20K → Half1314-1#3843#3844
Half → 25K1779+168#3844#3676
25K → 30K3783+375#3676#3301
30K → 20M1701+169#3301#3132
20M → 21M1500+150#3132#2982
21M → 35K882+86#2982#2896
35K → 23M1066+100#2896#2796
23M → 24M924+88#2796#2708
24M → 40K6418+46#2708#2662
40K → 25.2M1510+5#2662#2657
25.2M → Finish2346-23#2657#2680
TOTALS1764355+1409
📊

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