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BOSTON MARATHON 2025

Nathan Key

Bib: 1470•M

MO

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 5%
Gender (Male)
#0 / 16105
Top 9%
Division (M18-39)
#0 / 5642
Top 21%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:22
Rank: #2044
Start → 5K
19:22 | 6:14/mi
10K· 6.21 mi
38:43
Rank: #2031 (+13)
5K → 10K
19:21 | 6:14/mi
15K· 9.32 mi
58:00
Rank: #1952 (+79)
10K → 15K
19:17 | 6:12/mi
20K· 12.43 mi
1:17:11
Rank: #1807 (+145)
15K → 20K
19:11 | 6:10/mi
Half· 13.11 mi
1:21:24
Rank: #1809 (-2)
20K → Half
4:13 | 6:11/mi
25K· 15.53 mi
1:36:25
Rank: #1712 (+97)
Half → 25K
15:01 | 6:12/mi
30K· 18.64 mi
1:55:51
Rank: #1556 (+156)
25K → 30K
19:26 | 6:15/mi
20M
2:04:31
Rank: #1490 (+66)
30K → 20M
8:40 | 6:23/mi
21M
2:11:17
Rank: #1463 (+27)
20M → 21M
6:46 | 6:46/mi
35K· 21.75 mi
2:16:04
Rank: #1463
21M → 35K
4:47 | 6:24/mi
23M
2:24:24
Rank: #1464 (-1)
35K → 23M
8:20 | 6:39/mi
24M
2:30:55
Rank: #1459 (+5)
23M → 24M
6:31 | 6:31/mi
40K· 24.85 mi
2:36:37
Rank: #1461 (-2)
24M → 40K
5:42 | 6:40/mi
25.2M
2:39:07
Rank: #1465 (-4)
40K → 25.2M
2:30 | 7:15/mi
Finish· 26.22 mi
2:45:40
Rank: #1476 (-11)
25.2M → Finish
6:33 | 6:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:21:24
Pace6:13 /mi
2nd Half
Distance13.11 mi
Time1:24:16
Pace6:26 /mi
📊Positive Split: 3.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:0619:226:1419:22
6:14
-
10K
6.21 mi10:39:2738:436:1419:21
6:14
0:00
15K
9.32 mi10:58:4458:006:1319:17
6:12
-0:02
20K
12.43 mi11:17:551:17:116:1319:11
6:10
-0:02
Half
13.11 mi11:22:081:21:246:134:13
6:11
+0:01
25K
15.53 mi11:37:091:36:256:1215:01
6:12
+0:01
30K
18.64 mi11:56:351:55:516:1319:26
6:15
+0:03
20M
20.00 mi12:05:152:04:316:148:40
6:23
+0:08
21M
21.00 mi12:12:012:11:176:156:46
6:46
+0:23
35K
21.75 mi12:16:482:16:046:154:47
6:24
-0:22
23M
23.00 mi12:25:082:24:246:178:20
6:39
+0:15
24M
24.00 mi12:31:392:30:556:176:31
6:31
-0:08
40K
24.85 mi12:37:212:36:376:185:42
6:40
+0:09
25.2M
25.20 mi12:39:512:39:076:192:30
7:15
+0:35
Finish
26.22 mi12:46:242:45:406:196:33
6:26
-0:49

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

6:10 /mi

Average Pace

6:19 /mi

Slowest Pace

7:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:43:10

98% of race

Time at Steady Pace

2:30

2% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:19 /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 mi10:20:0619:226:1419:22
6:14
#2044
10K
6.21 mi10:39:2738:436:1419:21
6:14
#2031
15K
9.32 mi10:58:4458:006:1319:17
6:12
#1952
20K
12.43 mi11:17:551:17:116:1319:11
6:10
#1807
Half
13.11 mi11:22:081:21:246:134:13
6:11
#1809
25K
15.53 mi11:37:091:36:256:1215:01
6:12
#1712
30K
18.64 mi11:56:351:55:516:1319:26
6:15
#1556
20M
20.00 mi12:05:152:04:316:148:40
6:23
#1490
21M
21.00 mi12:12:012:11:176:156:46
6:46
#1463
35K
21.75 mi12:16:482:16:046:154:47
6:24
#1463
23M
23.00 mi12:25:082:24:246:178:20
6:39
#1464
24M
24.00 mi12:31:392:30:556:176:31
6:31
#1459
40K
24.85 mi12:37:212:36:376:185:42
6:40
#1461
25.2M
25.20 mi12:39:512:39:076:192:30
7:15
#1465
Finish
26.22 mi12:46:242:45:406:196:33
6:26
#1476
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2044194619461890(Top 7%)1799(Top 11%)1799(Top 32%)
10K6.21 mi3.10 mi2031+131936+101936+102038(Top 7%)1941(Top 12%)1941(Top 34%)
15K9.32 mi3.11 mi1952+791857+791857+791890(Top 7%)1799(Top 11%)1799(Top 32%)
20K12.43 mi3.11 mi1807+1451718+1391718+1391474(Top 5%)1396(Top 9%)1396(Top 25%)
Half13.11 mi0.68 mi1809-21720-21720-21848(Top 7%)1761(Top 11%)1761(Top 31%)
25K15.53 mi2.42 mi1712+971625+951625+951427(Top 5%)1355(Top 8%)1355(Top 24%)
30K18.64 mi3.11 mi1556+1561474+1511474+1511079(Top 4%)1015(Top 6%)1015(Top 18%)
20M20.00 mi1.36 mi1490+661410+641410+641186(Top 4%)1118(Top 7%)1118(Top 20%)
21M21.00 mi1.00 mi1463+271383+271383+271412(Top 5%)1332(Top 8%)1332(Top 24%)
35K21.75 mi0.75 mi1463138313831963(Top 7%)1837(Top 11%)1837(Top 33%)
23M23.00 mi1.25 mi1464-1138313832045(Top 7%)1910(Top 12%)1910(Top 34%)
24M24.00 mi1.00 mi1459+51379+41379+42097(Top 7%)1944(Top 12%)1944(Top 34%)
40K24.85 mi0.85 mi1461-21380-11380-12210(Top 8%)2025(Top 13%)2025(Top 36%)
25.2M25.20 mi0.35 mi1465-41383-31383-32278(Top 8%)2031(Top 13%)2031(Top 36%)
Finish26.22 mi1.02 mi1476-111393-101393-102422(Top 9%)2202(Top 14%)2202(Top 39%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×21stories
+97ft-345ft

Overall

1890

Males

1799

M18-39

1799

5K→10K

3.1 - 6.2 mi

Top 7%
×5stories
+79ft-138ft

Overall

2038

Males

1941

M18-39

1941

10K→15K

6.2 - 9.3 mi

Top 7%
×3stories
+67ft-78ft

Overall

1890

Males

1799

M18-39

1799

15K→20K

9.3 - 12.4 mi

Top 5%
×5stories
+106ft-86ft

Overall

1474

Males

1396

M18-39

1396

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

1848

Males

1761

M18-39

1761

Half→25K

13.1 - 15.5 mi

Top 5%
×4stories
+66ft-88ft

Overall

1427

Males

1355

M18-39

1355

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1079

Males

1015

M18-39

1015

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

1186

Males

1118

M18-39

1118

20M→21M

20.0 - 21.0 mi

Top 5%
×8stories
+106ft-24ft

Overall

1412

Males

1332

M18-39

1332

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1963

Males

1837

M18-39

1837

35K→23M

21.8 - 23.0 mi

Top 7%
×5stories
+23ft-63ft

Overall

2045

Males

1910

M18-39

1910

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

2097

Males

1944

M18-39

1944

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2210

Males

2025

M18-39

2025

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2278

Males

2031

M18-39

2031

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2stories
+22ft-21ft

Overall

2422

Males

2202

M18-39

2202

Passing Analysis

Category:
Athletes Passed
912
Passed By
344
Net Change
+568
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2044
5K → 10K122109+13#2044#2031
10K → 15K10324+79#2031#1952
15K → 20K1527+145#1952#1807
20K → Half1012-2#1807#1809
Half → 25K10912+97#1809#1712
25K → 30K1637+156#1712#1556
30K → 20M726+66#1556#1490
20M → 21M4114+27#1490#1463
21M → 35K23230#1463#1463
35K → 23M3536-1#1463#1464
23M → 24M3429+5#1464#1459
24M → 40K2123-2#1459#1461
40K → 25.2M59-4#1461#1465
25.2M → Finish2233-11#1465#1476
TOTALS912344+568
📊

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