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BOSTON MARATHON 2025

Nick Spencer

Bib: 1704•M

UT

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 22%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:40
Rank: #1105
Start → 5K
18:40 | 6:00/mi
10K· 6.21 mi
37:12
Rank: #1033 (+72)
5K → 10K
18:32 | 5:58/mi
15K· 9.32 mi
55:46
Rank: #1003 (+30)
10K → 15K
18:34 | 5:59/mi
20K· 12.43 mi
1:14:30
Rank: #982 (+21)
15K → 20K
18:44 | 6:02/mi
Half· 13.11 mi
1:18:32
Rank: #978 (+4)
20K → Half
4:02 | 5:55/mi
25K· 15.53 mi
1:33:10
Rank: #944 (+34)
Half → 25K
14:38 | 6:02/mi
30K· 18.64 mi
1:52:44
Rank: #957 (-13)
25K → 30K
19:34 | 6:18/mi
20M
2:01:34
Rank: #978 (-21)
30K → 20M
8:50 | 6:30/mi
21M
2:08:37
Rank: #1011 (-33)
20M → 21M
7:03 | 7:03/mi
35K· 21.75 mi
2:13:29
Rank: #1041 (-30)
21M → 35K
4:52 | 6:30/mi
23M
2:22:06
Rank: #1106 (-65)
35K → 23M
8:37 | 6:53/mi
24M
2:29:17
Rank: #1209 (-103)
23M → 24M
7:11 | 7:11/mi
40K· 24.85 mi
2:35:47
Rank: #1339 (-130)
24M → 40K
6:30 | 7:36/mi
25.2M
2:38:39
Rank: #1399 (-60)
40K → 25.2M
2:52 | 8:19/mi
Finish· 26.22 mi
2:46:08
Rank: #1548 (-149)
25.2M → Finish
7:29 | 7:21/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:18:32
Pace5:59 /mi
2nd Half
Distance13.11 mi
Time1:27:36
Pace6:41 /mi
📊Positive Split: 11.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:2718:406:0018:40
6:00
-
10K
6.21 mi10:37:5937:125:5918:32
5:58
-0:02
15K
9.32 mi10:56:3355:465:5918:34
5:59
+0:01
20K
12.43 mi11:15:171:14:306:0018:44
6:02
+0:03
Half
13.11 mi11:19:191:18:325:594:02
5:55
-0:07
25K
15.53 mi11:33:571:33:106:0014:38
6:02
+0:07
30K
18.64 mi11:53:311:52:446:0319:34
6:18
+0:16
20M
20.00 mi12:02:212:01:346:058:50
6:30
+0:12
21M
21.00 mi12:09:242:08:376:077:03
7:03
+0:33
35K
21.75 mi12:14:162:13:296:084:52
6:30
-0:33
23M
23.00 mi12:22:532:22:066:118:37
6:53
+0:23
24M
24.00 mi12:30:042:29:176:137:11
7:11
+0:18
40K
24.85 mi12:36:342:35:476:166:30
7:36
+0:25
25.2M
25.20 mi12:39:262:38:396:182:52
8:19
+0:43
Finish
26.22 mi12:46:552:46:086:207:29
7:21
-0:58

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

5:55 /mi

Average Pace

6:20 /mi

Slowest Pace

8:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:33:10

56% of race

Time at Steady Pace

33:16

20% of race

Time at Slower Pace

39:42

24% of race

Average Pace: 6:20 /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 mi10:19:2718:406:0018:40
6:00
#1105
10K
6.21 mi10:37:5937:125:5918:32
5:58
#1033
15K
9.32 mi10:56:3355:465:5918:34
5:59
#1003
20K
12.43 mi11:15:171:14:306:0018:44
6:02
#982
Half
13.11 mi11:19:191:18:325:594:02
5:55
#978
25K
15.53 mi11:33:571:33:106:0014:38
6:02
#944
30K
18.64 mi11:53:311:52:446:0319:34
6:18
#957
20M
20.00 mi12:02:212:01:346:058:50
6:30
#978
21M
21.00 mi12:09:242:08:376:077:03
7:03
#1011
35K
21.75 mi12:14:162:13:296:084:52
6:30
#1041
23M
23.00 mi12:22:532:22:066:118:37
6:53
#1106
24M
24.00 mi12:30:042:29:176:137:11
7:11
#1209
40K
24.85 mi12:36:342:35:476:166:30
7:36
#1339
25.2M
25.20 mi12:39:262:38:396:182:52
8:19
#1399
Finish
26.22 mi12:46:552:46:086:207:29
7:21
#1548
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi110510461046964(Top 3%)911(Top 6%)911(Top 16%)
10K6.21 mi3.10 mi1033+72973+73973+731016(Top 4%)959(Top 6%)959(Top 17%)
15K9.32 mi3.11 mi1003+30946+27946+27964(Top 3%)911(Top 6%)911(Top 16%)
20K12.43 mi3.11 mi982+21925+21925+21958(Top 3%)903(Top 6%)903(Top 16%)
Half13.11 mi0.68 mi978+4921+4921+4888(Top 3%)840(Top 5%)840(Top 15%)
25K15.53 mi2.42 mi944+34890+31890+31901(Top 3%)848(Top 5%)848(Top 15%)
30K18.64 mi3.11 mi957-13902-12902-121202(Top 4%)1136(Top 7%)1136(Top 20%)
20M20.00 mi1.36 mi978-21920-18920-181620(Top 6%)1531(Top 10%)1531(Top 27%)
21M21.00 mi1.00 mi1011-33951-31951-312427(Top 9%)2263(Top 14%)2263(Top 40%)
35K21.75 mi0.75 mi1041-30980-29980-292448(Top 9%)2281(Top 14%)2281(Top 40%)
23M23.00 mi1.25 mi1106-651042-621042-623093(Top 11%)2823(Top 18%)2823(Top 50%)
24M24.00 mi1.00 mi1209-1031138-961138-965664(Top 20%)4689(Top 29%)4689(Top 83%)
40K24.85 mi0.85 mi1339-1301262-1241262-1247373(Top 26%)5631(Top 35%)5631(Top 100%)
25.2M25.20 mi0.35 mi1399-601320-581320-587585(Top 27%)5644(Top 35%)5644(Top 100%)
Finish26.22 mi1.02 mi1548-1491465-1451465-1458018(Top 28%)5903(Top 37%)5903(Top 105%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

964

Males

911

M18-39

911

5K→10K

3.1 - 6.2 mi

Top 4%
×5stories
+79ft-138ft

Overall

1016

Males

959

M18-39

959

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

964

Males

911

M18-39

911

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

958

Males

903

M18-39

903

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

888

Males

840

M18-39

840

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

901

Males

848

M18-39

848

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1202

Males

1136

M18-39

1136

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1620

Males

1531

M18-39

1531

20M→21M

20.0 - 21.0 mi

Top 9%
×8stories
+106ft-24ft

Overall

2427

Males

2263

M18-39

2263

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2448

Males

2281

M18-39

2281

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

3093

Males

2823

M18-39

2823

23M→24M

23.0 - 24.0 mi

Top 20%
×6stories
+12ft-82ft

Overall

5664

Males

4689

M18-39

4689

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

7373

Males

5631

M18-39

5631

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

7585

Males

5644

M18-39

5644

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

8018

Males

5903

M18-39

5903

Passing Analysis

Category:
Athletes Passed
341
Passed By
784
Net Change
-443
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1105
5K → 10K9321+72#1105#1033
10K → 15K4818+30#1033#1003
15K → 20K3716+21#1003#982
20K → Half84+4#982#978
Half → 25K4713+34#978#944
25K → 30K3750-13#944#957
30K → 20M2445-21#957#978
20M → 21M1144-33#978#1011
21M → 35K535-30#1011#1041
35K → 23M2388-65#1041#1106
23M → 24M2105-103#1106#1209
24M → 40K1131-130#1209#1339
40K → 25.2M161-60#1339#1399
25.2M → Finish4153-149#1399#1548
TOTALS341784-443
📊

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