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BOSTON MARATHON 2025

Spencer Davis

Bib: 4124•M

MN

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 22%
Gender (Male)
#0 / 16105
Top 33%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:37
Rank: #10128
Start → 5K
22:37 | 7:17/mi
10K· 6.21 mi
45:07
Rank: #9984 (+144)
5K → 10K
22:30 | 7:15/mi
15K· 9.32 mi
1:07:27
Rank: #9626 (+358)
10K → 15K
22:20 | 7:11/mi
20K· 12.43 mi
1:29:44
Rank: #9161 (+465)
15K → 20K
22:17 | 7:10/mi
Half· 13.11 mi
1:34:32
Rank: #9083 (+78)
20K → Half
4:48 | 7:02/mi
25K· 15.53 mi
1:51:37
Rank: #8553 (+530)
Half → 25K
17:05 | 7:03/mi
30K· 18.64 mi
2:13:24
Rank: #7717 (+836)
25K → 30K
21:47 | 7:01/mi
20M
2:22:50
Rank: #7348 (+369)
30K → 20M
9:26 | 6:57/mi
21M
2:30:08
Rank: #7055 (+293)
20M → 21M
7:18 | 7:18/mi
35K· 21.75 mi
2:35:20
Rank: #6938 (+117)
21M → 35K
5:12 | 6:57/mi
23M
2:44:07
Rank: #6629 (+309)
35K → 23M
8:47 | 7:01/mi
24M
2:51:01
Rank: #6476 (+153)
23M → 24M
6:54 | 6:54/mi
40K· 24.85 mi
2:56:57
Rank: #6316 (+160)
24M → 40K
5:56 | 6:56/mi
25.2M
2:59:34
Rank: #6250 (+66)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
3:06:26
Rank: #6107 (+143)
25.2M → Finish
6:52 | 6:44/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:34:32
Pace7:13 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:31:54
Pace7:01 /mi
📊Negative Split: 2.8% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:31:2622:377:1722:37
7:17
-
10K
6.21 mi10:53:5645:077:1622:30
7:15
-0:02
15K
9.32 mi11:16:161:07:277:1422:20
7:11
-0:04
20K
12.43 mi11:38:331:29:447:1322:17
7:10
-0:01
Half
13.11 mi11:43:211:34:327:134:48
7:02
-0:08
25K
15.53 mi12:00:261:51:377:1117:05
7:03
+0:01
30K
18.64 mi12:22:132:13:247:0921:47
7:01
-0:02
20M
20.00 mi12:31:392:22:507:089:26
6:57
-0:04
21M
21.00 mi12:38:572:30:087:097:18
7:18
+0:21
35K
21.75 mi12:44:092:35:207:095:12
6:57
-0:21
23M
23.00 mi12:52:562:44:077:088:47
7:01
+0:04
24M
24.00 mi12:59:502:51:017:086:54
6:54
-0:07
40K
24.85 mi13:05:462:56:577:075:56
6:56
+0:02
25.2M
25.20 mi13:08:232:59:347:082:37
7:35
+0:39
Finish
26.22 mi13:15:153:06:267:076:52
6:44
-0:51

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

6:44 /mi

Average Pace

7:07 /mi

Slowest Pace

7:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:03:49

99% of race

Time at Steady Pace

2:37

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:07 /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 mi10:31:2622:377:1722:37
7:17
#10128
10K
6.21 mi10:53:5645:077:1622:30
7:15
#9984
15K
9.32 mi11:16:161:07:277:1422:20
7:11
#9626
20K
12.43 mi11:38:331:29:447:1322:17
7:10
#9161
Half
13.11 mi11:43:211:34:327:134:48
7:02
#9083
25K
15.53 mi12:00:261:51:377:1117:05
7:03
#8553
30K
18.64 mi12:22:132:13:247:0921:47
7:01
#7717
20M
20.00 mi12:31:392:22:507:089:26
6:57
#7348
21M
21.00 mi12:38:572:30:087:097:18
7:18
#7055
35K
21.75 mi12:44:092:35:207:095:12
6:57
#6938
23M
23.00 mi12:52:562:44:077:088:47
7:01
#6629
24M
24.00 mi12:59:502:51:017:086:54
6:54
#6476
40K
24.85 mi13:05:462:56:577:075:56
6:56
#6316
25.2M
25.20 mi13:08:232:59:347:082:37
7:35
#6250
Finish
26.22 mi13:15:153:06:267:076:52
6:44
#6107
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi10128823582358994(Top 32%)7538(Top 47%)7538(Top 134%)
10K6.21 mi3.10 mi9984+1448156+798156+799833(Top 35%)8045(Top 50%)8045(Top 143%)
15K9.32 mi3.11 mi9626+3587939+2177939+2178994(Top 32%)7538(Top 47%)7538(Top 134%)
20K12.43 mi3.11 mi9161+4657652+2877652+2877962(Top 28%)6845(Top 43%)6845(Top 121%)
Half13.11 mi0.68 mi9083+787609+437609+437762(Top 27%)6724(Top 42%)6724(Top 119%)
25K15.53 mi2.42 mi8553+5307268+3417268+3416602(Top 23%)5832(Top 36%)5832(Top 103%)
30K18.64 mi3.11 mi7717+8366698+5706698+5704754(Top 17%)4332(Top 27%)4332(Top 77%)
20M20.00 mi1.36 mi7348+3696426+2726426+2723764(Top 13%)3463(Top 22%)3463(Top 61%)
21M21.00 mi1.00 mi7055+2936193+2336193+2333626(Top 13%)3315(Top 21%)3315(Top 59%)
35K21.75 mi0.75 mi6938+1176097+966097+965035(Top 18%)4402(Top 27%)4402(Top 78%)
23M23.00 mi1.25 mi6629+3095835+2625835+2623839(Top 14%)3452(Top 21%)3452(Top 61%)
24M24.00 mi1.00 mi6476+1535713+1225713+1224081(Top 14%)3598(Top 22%)3598(Top 64%)
40K24.85 mi0.85 mi6316+1605576+1375576+1373567(Top 13%)3163(Top 20%)3163(Top 56%)
25.2M25.20 mi0.35 mi6250+665517+595517+593805(Top 13%)3287(Top 20%)3287(Top 58%)
Finish26.22 mi1.02 mi6107+1435392+1255392+1254115(Top 14%)3518(Top 22%)3518(Top 62%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21stories
+97ft-345ft

Overall

8994

Males

7538

M18-39

7538

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

9833

Males

8045

M18-39

8045

10K→15K

6.2 - 9.3 mi

Top 32%
×3stories
+67ft-78ft

Overall

8994

Males

7538

M18-39

7538

15K→20K

9.3 - 12.4 mi

Top 28%
×5stories
+106ft-86ft

Overall

7962

Males

6845

M18-39

6845

20K→Half

12.4 - 13.1 mi

Top 27%
×2stories
+19ft-37ft

Overall

7762

Males

6724

M18-39

6724

Half→25K

13.1 - 15.5 mi

Top 23%
×4stories
+66ft-88ft

Overall

6602

Males

5832

M18-39

5832

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4754

Males

4332

M18-39

4332

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3764

Males

3463

M18-39

3463

20M→21M

20.0 - 21.0 mi

Top 13%
×8stories
+106ft-24ft

Overall

3626

Males

3315

M18-39

3315

21M→35K

21.0 - 21.8 mi

Top 18%
×7stories
+17ft-86ft

Overall

5035

Males

4402

M18-39

4402

35K→23M

21.8 - 23.0 mi

Top 14%
×5stories
+23ft-63ft

Overall

3839

Males

3452

M18-39

3452

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

4081

Males

3598

M18-39

3598

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3567

Males

3163

M18-39

3163

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3805

Males

3287

M18-39

3287

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2stories
+22ft-21ft

Overall

4115

Males

3518

M18-39

3518

Passing Analysis

Category:
Athletes Passed
4282*
Passed By
261
Net Change
+4021
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10128
5K → 10K320176+144#10128#9984
10K → 15K394*36+358#9984#9626
15K → 20K47510+465#9626#9161
20K → Half868+78#9161#9083
Half → 25K5322+530#9083#8553
25K → 30K8360+836#8553#7717
30K → 20M3690+369#7717#7348
20M → 21M2941+293#7348#7055
21M → 35K1225+117#7055#6938
35K → 23M3090+309#6938#6629
23M → 24M1607+153#6629#6476
24M → 40K1655+160#6476#6316
40K → 25.2M693+66#6316#6250
25.2M → Finish1518+143#6250#6107
TOTALS4282*261+4021

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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