Boston Marathon logo
BOSTON MARATHON 2025

David Walter

Bib: 342•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 0.9%
Gender (Male)
#0 / 16105
Top 1%
Age Group (M18-39)
#0 / 5642
Top 4%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
17:59
Rank: #585
Start → 5K
17:59 | 5:47/mi
10K· 6.21 mi
36:01
Rank: #597 (-12)
5K → 10K
18:02 | 5:48/mi
15K· 9.32 mi
54:13
Rank: #598 (-1)
10K → 15K
18:12 | 5:51/mi
20K· 12.43 mi
1:12:23
Rank: #566 (+32)
15K → 20K
18:10 | 5:51/mi
Half· 13.11 mi
1:16:17
Rank: #557 (+9)
20K → Half
3:54 | 5:43/mi
25K· 15.53 mi
1:30:12
Rank: #498 (+59)
Half → 25K
13:55 | 5:44/mi
30K· 18.64 mi
1:48:10
Rank: #437 (+61)
25K → 30K
17:58 | 5:47/mi
20M
1:56:02
Rank: #409 (+28)
30K → 20M
7:52 | 5:47/mi
21M
2:02:22
Rank: #398 (+11)
20M → 21M
6:20 | 6:20/mi
35K· 21.75 mi
2:06:22
Rank: #373 (+25)
21M → 35K
4:00 | 5:21/mi
23M
2:13:26
Rank: #330 (+43)
35K → 23M
7:04 | 5:39/mi
24M
2:18:58
Rank: #294 (+36)
23M → 24M
5:32 | 5:32/mi
40K· 24.85 mi
2:23:50
Rank: #282 (+12)
24M → 40K
4:52 | 5:42/mi
25.2M
2:25:56
Rank: #271 (+11)
40K → 25.2M
2:06 | 6:05/mi
Finish· 26.22 mi
2:31:35
Rank: #260 (+11)
25.2M → Finish
5:39 | 5:33/mi
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 Half
Distance13.11 mi
Time1:16:17
Pace5:49 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:15:18
Pace5:45 /mi
📊Negative Split: 1.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:0817:595:4717:59
5:47
-
10K
6.21 mi10:37:1036:015:4818:02
5:48
+0:01
15K
9.32 mi10:55:2254:135:4918:12
5:51
+0:03
20K
12.43 mi11:13:321:12:235:4918:10
5:51
0:00
Half
13.11 mi11:17:261:16:175:493:54
5:43
-0:08
25K
15.53 mi11:31:211:30:125:4813:55
5:44
+0:01
30K
18.64 mi11:49:191:48:105:4817:58
5:47
+0:03
20M
20.00 mi11:57:111:56:025:487:52
5:47
0:00
21M
21.00 mi12:03:312:02:225:506:20
6:20
+0:33
35K
21.75 mi12:07:312:06:225:494:00
5:21
-0:59
23M
23.00 mi12:14:352:13:265:487:04
5:39
+0:18
24M
24.00 mi12:20:072:18:585:475:32
5:32
-0:07
40K
24.85 mi12:24:592:23:505:474:52
5:42
+0:10
25.2M
25.20 mi12:27:052:25:565:472:06
6:05
+0:23
Finish
26.22 mi12:32:442:31:355:475:39
5:33
-0:32

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

5:21 /mi

Average Pace

5:47 /mi

Slowest Pace

6:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:23:09

94% of race

Time at Steady Pace

2:06

1% of race

Time at Slower Pace

6:20

4% of race

Average Pace: 5:47 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:19:0817:595:4717:59
5:47
#585
10K
6.21 mi10:37:1036:015:4818:02
5:48
#597
15K
9.32 mi10:55:2254:135:4918:12
5:51
#598
20K
12.43 mi11:13:321:12:235:4918:10
5:51
#566
Half
13.11 mi11:17:261:16:175:493:54
5:43
#557
25K
15.53 mi11:31:211:30:125:4813:55
5:44
#498
30K
18.64 mi11:49:191:48:105:4817:58
5:47
#437
20M
20.00 mi11:57:111:56:025:487:52
5:47
#409
21M
21.00 mi12:03:312:02:225:506:20
6:20
#398
35K
21.75 mi12:07:312:06:225:494:00
5:21
#373
23M
23.00 mi12:14:352:13:265:487:04
5:39
#330
24M
24.00 mi12:20:072:18:585:475:32
5:32
#294
40K
24.85 mi12:24:592:23:505:474:52
5:42
#282
25.2M
25.20 mi12:27:052:25:565:472:06
6:05
#271
Finish
26.22 mi12:32:442:31:355:475:39
5:33
#260
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi585541541639(Top 2%)593(Top 4%)593(Top 11%)
10K6.21 mi3.10 mi597-12553-12553-12611(Top 2%)571(Top 4%)571(Top 10%)
15K9.32 mi3.11 mi598-1554-1554-1639(Top 2%)593(Top 4%)593(Top 11%)
20K12.43 mi3.11 mi566+32523+31523+31505(Top 2%)466(Top 3%)466(Top 8%)
Half13.11 mi0.68 mi557+9515+8515+8428(Top 2%)400(Top 2%)400(Top 7%)
25K15.53 mi2.42 mi498+59461+54461+54334(Top 1%)308(Top 2%)308(Top 5%)
30K18.64 mi3.11 mi437+61402+59402+59233(Top 0.8%)211(Top 1%)211(Top 4%)
20M20.00 mi1.36 mi409+28376+26376+26177(Top 0.6%)161(Top 1.0%)161(Top 3%)
21M21.00 mi1.00 mi398+11367+9367+9400(Top 1%)376(Top 2%)376(Top 7%)
35K21.75 mi0.75 mi373+25343+24343+2469(Top 0.2%)65(Top 0.4%)65(Top 1%)
23M23.00 mi1.25 mi330+43303+40303+4092(Top 0.3%)87(Top 0.5%)87(Top 2%)
24M24.00 mi1.00 mi294+36269+34269+34106(Top 0.4%)100(Top 0.6%)100(Top 2%)
40K24.85 mi0.85 mi282+12258+11258+11128(Top 0.5%)120(Top 0.7%)120(Top 2%)
25.2M25.20 mi0.35 mi271+11247+11247+11114(Top 0.4%)107(Top 0.7%)107(Top 2%)
Finish26.22 mi1.02 mi260+11237+10237+10178(Top 0.6%)169(Top 1%)169(Top 3%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21stories
+97ft-345ft

Overall

639

Males

593

M18-39

593

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

611

Males

571

M18-39

571

10K→15K

6.2 - 9.3 mi

Top 2%
×3stories
+67ft-78ft

Overall

639

Males

593

M18-39

593

15K→20K

9.3 - 12.4 mi

Top 2%
×5stories
+106ft-86ft

Overall

505

Males

466

M18-39

466

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

428

Males

400

M18-39

400

Half→25K

13.1 - 15.5 mi

Top 1%
×4stories
+66ft-88ft

Overall

334

Males

308

M18-39

308

25K→30K

15.5 - 18.6 mi

Top 0.8%
×9stories
+181ft-148ft

Overall

233

Males

211

M18-39

211

30K→20M

18.6 - 20.0 mi

Top 0.6%
×5stories
+64ft-50ft

Overall

177

Males

161

M18-39

161

20M→21M

20.0 - 21.0 mi

Top 1%
×8stories
+106ft-24ft

Overall

400

Males

376

M18-39

376

21M→35K

21.0 - 21.8 mi

Top 0.2%
×7stories
+17ft-86ft

Overall

69

Males

65

M18-39

65

35K→23M

21.8 - 23.0 mi

Top 0.3%
×5stories
+23ft-63ft

Overall

92

Males

87

M18-39

87

23M→24M

23.0 - 24.0 mi

Top 0.4%
×6stories
+12ft-82ft

Overall

106

Males

100

M18-39

100

24M→40K

24.0 - 24.9 mi

Top 0.5%
×1story
+6ft-20ft

Overall

128

Males

120

M18-39

120

40K→25.2M

24.9 - 25.2 mi

Top 0.4%
×1story
+13ft-16ft

Overall

114

Males

107

M18-39

107

25.2M→Finish

25.2 - 26.2 mi

Top 0.6%
×2stories
+22ft-21ft

Overall

178

Males

169

M18-39

169

Passing Analysis

Category:
Athletes Passed
387
Passed By
62
Net Change
+325
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#585
5K → 10K2739-12#585#597
10K → 15K1516-1#597#598
15K → 20K342+32#598#566
20K → Half101+9#566#557
Half → 25K601+59#557#498
25K → 30K610+61#498#437
30K → 20M291+28#437#409
20M → 21M132+11#409#398
21M → 35K250+25#398#373
35K → 23M430+43#373#330
23M → 24M360+36#330#294
24M → 40K120+12#294#282
40K → 25.2M110+11#282#271
25.2M → Finish110+11#271#260
TOTALS38762+325
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

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