Boston Marathon logo
BOSTON MARATHON 2025

Nathan Davis

Bib: 32223•M

UT

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M45-49)
#0 / 2386
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:51
Rank: #20706
Start → 5K
26:51 | 8:39/mi
10K· 6.21 mi
54:45
Rank: #21503 (-797)
5K → 10K
27:54 | 8:59/mi
15K· 9.32 mi
1:22:03
Rank: #21279 (+224)
10K → 15K
27:18 | 8:47/mi
20K· 12.43 mi
1:49:15
Rank: #20872 (+407)
15K → 20K
27:12 | 8:45/mi
Half· 13.11 mi
1:55:06
Rank: #20819 (+53)
20K → Half
5:51 | 8:34/mi
25K· 15.53 mi
2:16:15
Rank: #20469 (+350)
Half → 25K
21:09 | 8:43/mi
30K· 18.64 mi
2:44:26
Rank: #19986 (+483)
25K → 30K
28:11 | 9:04/mi
20M
2:56:48
Rank: #19770 (+216)
30K → 20M
12:22 | 9:06/mi
21M
3:06:29
Rank: #19600 (+170)
20M → 21M
9:41 | 9:41/mi
35K· 21.75 mi
3:12:55
Rank: #19472 (+128)
21M → 35K
6:26 | 8:36/mi
23M
3:24:13
Rank: #19301 (+171)
35K → 23M
11:18 | 9:02/mi
24M
3:33:01
Rank: #19170 (+131)
23M → 24M
8:48 | 8:48/mi
40K· 24.85 mi
3:40:37
Rank: #19017 (+153)
24M → 40K
7:36 | 8:53/mi
25.2M
3:43:52
Rank: #18946 (+71)
40K → 25.2M
3:15 | 9:25/mi
Finish· 26.22 mi
3:52:20
Rank: #18810 (+136)
25.2M → Finish
8:28 | 8:19/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:06
Pace8:47 /mi
2nd Half
Distance13.11 mi
Time1:57:14
Pace8:57 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:3426:518:3926:51
8:39
-
10K
6.21 mi12:19:2854:458:4927:54
8:59
+0:20
15K
9.32 mi12:46:461:22:038:4827:18
8:47
-0:12
20K
12.43 mi13:13:581:49:158:4727:12
8:45
-0:02
Half
13.11 mi13:19:491:55:068:475:51
8:34
-0:11
25K
15.53 mi13:40:582:16:158:4621:09
8:43
+0:09
30K
18.64 mi14:09:092:44:268:4928:11
9:04
+0:21
20M
20.00 mi14:21:312:56:488:5012:22
9:06
+0:02
21M
21.00 mi14:31:123:06:298:539:41
9:41
+0:35
35K
21.75 mi14:37:383:12:558:526:26
8:36
-1:05
23M
23.00 mi14:48:563:24:138:5311:18
9:02
+0:26
24M
24.00 mi14:57:443:33:018:538:48
8:48
-0:14
40K
24.85 mi15:05:203:40:378:537:36
8:53
+0:05
25.2M
25.20 mi15:08:353:43:528:533:15
9:25
+0:32
Finish
26.22 mi15:17:033:52:208:528:28
8:19
-1:06

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

8:19 /mi

Average Pace

8:52 /mi

Slowest Pace

9:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:39:24

94% of race

Time at Steady Pace

12:56

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:52 /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 mi11:51:3426:518:3926:51
8:39
#20706
10K
6.21 mi12:19:2854:458:4927:54
8:59
#21503
15K
9.32 mi12:46:461:22:038:4827:18
8:47
#21279
20K
12.43 mi13:13:581:49:158:4727:12
8:45
#20872
Half
13.11 mi13:19:491:55:068:475:51
8:34
#20819
25K
15.53 mi13:40:582:16:158:4621:09
8:43
#20469
30K
18.64 mi14:09:092:44:268:4928:11
9:04
#19986
20M
20.00 mi14:21:312:56:488:5012:22
9:06
#19770
21M
21.00 mi14:31:123:06:298:539:41
9:41
#19600
35K
21.75 mi14:37:383:12:558:526:26
8:36
#19472
23M
23.00 mi14:48:563:24:138:5311:18
9:02
#19301
24M
24.00 mi14:57:443:33:018:538:48
8:48
#19170
40K
24.85 mi15:05:203:40:378:537:36
8:53
#19017
25.2M
25.20 mi15:08:353:43:528:533:15
9:25
#18946
Finish
26.22 mi15:17:033:52:208:528:28
8:19
#18810
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi20706127291272920952(Top 74%)12917(Top 80%)12917(Top 541%)
10K6.21 mi3.10 mi21503-79713101-37213101-37222287(Top 78%)13465(Top 84%)13465(Top 564%)
15K9.32 mi3.11 mi21279+22413030+7113030+7120952(Top 74%)12917(Top 80%)12917(Top 541%)
20K12.43 mi3.11 mi20872+40712849+18112849+18119702(Top 69%)12328(Top 77%)12328(Top 517%)
Half13.11 mi0.68 mi20819+5312828+2112828+2119633(Top 69%)12307(Top 76%)12307(Top 516%)
25K15.53 mi2.42 mi20469+35012657+17112657+17118527(Top 65%)11757(Top 73%)11757(Top 493%)
30K18.64 mi3.11 mi19986+48312413+24412413+24418030(Top 63%)11395(Top 71%)11395(Top 478%)
20M20.00 mi1.36 mi19770+21612298+11512298+11517308(Top 61%)10953(Top 68%)10953(Top 459%)
21M21.00 mi1.00 mi19600+17012198+10012198+10016946(Top 60%)10675(Top 66%)10675(Top 447%)
35K21.75 mi0.75 mi19472+12812131+6712131+6716058(Top 57%)10210(Top 63%)10210(Top 428%)
23M23.00 mi1.25 mi19301+17112025+10612025+10616410(Top 58%)10252(Top 64%)10252(Top 430%)
24M24.00 mi1.00 mi19170+13111950+7511950+7516318(Top 57%)10176(Top 63%)10176(Top 426%)
40K24.85 mi0.85 mi19017+15311855+9511855+9515691(Top 55%)9770(Top 61%)9770(Top 409%)
25.2M25.20 mi0.35 mi18946+7111813+4211813+4214142(Top 50%)9027(Top 56%)9027(Top 378%)
Finish26.22 mi1.02 mi18810+13611736+7711736+7714959(Top 53%)9469(Top 59%)9469(Top 397%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21stories
+97ft-345ft

Overall

20952

Males

12917

M45-49

12917

5K→10K

3.1 - 6.2 mi

Top 78%
×5stories
+79ft-138ft

Overall

22287

Males

13465

M45-49

13465

10K→15K

6.2 - 9.3 mi

Top 74%
×3stories
+67ft-78ft

Overall

20952

Males

12917

M45-49

12917

15K→20K

9.3 - 12.4 mi

Top 69%
×5stories
+106ft-86ft

Overall

19702

Males

12328

M45-49

12328

20K→Half

12.4 - 13.1 mi

Top 69%
×2stories
+19ft-37ft

Overall

19633

Males

12307

M45-49

12307

Half→25K

13.1 - 15.5 mi

Top 65%
×4stories
+66ft-88ft

Overall

18527

Males

11757

M45-49

11757

25K→30K

15.5 - 18.6 mi

Top 63%
×9stories
+181ft-148ft

Overall

18030

Males

11395

M45-49

11395

30K→20M

18.6 - 20.0 mi

Top 61%
×5stories
+64ft-50ft

Overall

17308

Males

10953

M45-49

10953

20M→21M

20.0 - 21.0 mi

Top 60%
×8stories
+106ft-24ft

Overall

16946

Males

10675

M45-49

10675

21M→35K

21.0 - 21.8 mi

Top 57%
×7stories
+17ft-86ft

Overall

16058

Males

10210

M45-49

10210

35K→23M

21.8 - 23.0 mi

Top 58%
×5stories
+23ft-63ft

Overall

16410

Males

10252

M45-49

10252

23M→24M

23.0 - 24.0 mi

Top 57%
×6stories
+12ft-82ft

Overall

16318

Males

10176

M45-49

10176

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

15691

Males

9770

M45-49

9770

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1story
+13ft-16ft

Overall

14142

Males

9027

M45-49

9027

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2stories
+22ft-21ft

Overall

14959

Males

9469

M45-49

9469

Passing Analysis

Category:
Athletes Passed
3071
Passed By
1175
Net Change
+1896
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20706
5K → 10K69866-797#20706#21503
10K → 15K339115+224#21503#21279
15K → 20K44134+407#21279#20872
20K → Half618+53#20872#20819
Half → 25K36919+350#20819#20469
25K → 30K51936+483#20469#19986
30K → 20M23014+216#19986#19770
20M → 21M20232+170#19770#19600
21M → 35K1324+128#19600#19472
35K → 23M18413+171#19472#19301
23M → 24M14110+131#19301#19170
24M → 40K16310+153#19170#19017
40K → 25.2M721+71#19017#18946
25.2M → Finish14913+136#18946#18810
TOTALS30711175+1896
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing