Boston Marathon logo
BOSTON MARATHON 2025

Todd Deffenbaugh

Bib: 30521•M

AL

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
9:50/mi
30:33
↑ 97↓ 3451.5%
10K· 6.21 mi
10:03/mi
1:01:46
↑ 79↓ 1380.4%
15K· 9.32 mi
10:19/mi
1:33:50
↑ 67↓ 78
20K· 12.43 mi
10:39/mi
2:06:54
↑ 106↓ 860.1%
Half· 13.11 mi
10:24/mi
2:14:00
↑ 19↓ 370.5%
25K· 15.53 mi
11:02/mi
2:40:45
↑ 66↓ 880.2%
30K· 18.64 mi
11:45/mi
3:17:16
↑ 181↓ 1480.2%
20M
12:12/mi
3:33:51
↑ 64↓ 500.2%
21M
12:50/mi
3:46:41
↑ 106↓ 241.6%
35K· 21.75 mi
11:35/mi
3:55:21
↑ 17↓ 861.7%
23M
13:15/mi
4:11:57
↑ 23↓ 630.6%
24M
12:24/mi
4:24:21
↓ 821.3%
40K· 24.85 mi
12:48/mi
4:35:18
↓ 200.3%
25.2M
14:59/mi
4:40:28
↑ 13↓ 160.2%
Finish· 26.22 mi
13:08/mi
4:53:51
↑ 22↓ 21

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
Time2:14:00
Pace10:13 /mi
2nd Half
Distance13.11 mi
Time2:39:51
Pace12:12 /mi
📊Positive Split: 19.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:0430:339:5030:33
9:50
-
10K
6.21 mi12:23:171:01:469:5631:13
10:03
+0:13
15K
9.32 mi12:55:211:33:5010:0432:04
10:19
+0:16
20K
12.43 mi13:28:252:06:5410:1333:04
10:39
+0:20
Half
13.11 mi13:35:312:14:0010:137:06
10:24
-0:15
25K
15.53 mi14:02:162:40:4510:2126:45
11:02
+0:38
30K
18.64 mi14:38:473:17:1610:3536:31
11:45
+0:43
20M
20.00 mi14:55:223:33:5110:4216:35
12:12
+0:27
21M
21.00 mi15:08:123:46:4110:4812:50
12:50
+0:38
35K
21.75 mi15:16:523:55:2110:498:40
11:35
-1:15
23M
23.00 mi15:33:284:11:5710:5716:36
13:15
+1:40
24M
24.00 mi15:45:524:24:2111:0112:24
12:24
-0:51
40K
24.85 mi15:56:494:35:1811:0510:57
12:48
+0:24
25.2M
25.20 mi16:01:594:40:2811:085:10
14:59
+2:11
Finish
26.22 mi16:15:224:53:5111:1313:23
13:08
-1:51

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

9:50 /mi

Average Pace

11:13 /mi

Slowest Pace

14:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:40:45

55% of race

Time at Steady Pace

1:14:10

25% of race

Time at Slower Pace

58:56

20% of race

Average Pace: 11:12 /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 mi11:52:0430:339:5030:33
9:50
#25160
10K
6.21 mi12:23:171:01:469:5631:13
10:03
#25283
15K
9.32 mi12:55:211:33:5010:0432:04
10:19
#25457
20K
12.43 mi13:28:252:06:5410:1333:04
10:39
#25457
Half
13.11 mi13:35:312:14:0010:137:06
10:24
#25448
25K
15.53 mi14:02:162:40:4510:2126:45
11:02
#25419
30K
18.64 mi14:38:473:17:1610:3536:31
11:45
#25382
20M
20.00 mi14:55:223:33:5110:4216:35
12:12
#25415
21M
21.00 mi15:08:123:46:4110:4812:50
12:50
#25388
35K
21.75 mi15:16:523:55:2110:498:40
11:35
#25385
23M
23.00 mi15:33:284:11:5710:5716:36
13:15
#25486
24M
24.00 mi15:45:524:24:2111:0112:24
12:24
#25547
40K
24.85 mi15:56:494:35:1811:0510:57
12:48
#25594
25.2M
25.20 mi16:01:594:40:2811:085:10
14:59
#25637
Finish
26.22 mi16:15:224:53:5111:1313:23
13:08
#25788
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi25160148031480325632(Top 90%)14989(Top 93%)14989(Top 910%)
10K6.21 mi3.10 mi25283-12314833-3014833-3025414(Top 89%)14883(Top 92%)14883(Top 903%)
15K9.32 mi3.11 mi25457-17414922-8914922-8925632(Top 90%)14989(Top 93%)14989(Top 910%)
20K12.43 mi3.11 mi2545714906+1614906+1625442(Top 90%)14877(Top 92%)14877(Top 903%)
Half13.11 mi0.68 mi25448+914902+414902+425639(Top 90%)14950(Top 93%)14950(Top 907%)
25K15.53 mi2.42 mi25419+2914874+2814874+2825249(Top 89%)14747(Top 92%)14747(Top 895%)
30K18.64 mi3.11 mi25382+3714822+5214822+5225230(Top 89%)14644(Top 91%)14644(Top 889%)
20M20.00 mi1.36 mi25415-3314828-614828-625542(Top 90%)14703(Top 91%)14703(Top 892%)
21M21.00 mi1.00 mi25388+2714792+3614792+3624838(Top 87%)14294(Top 89%)14294(Top 867%)
35K21.75 mi0.75 mi25385+314783+914783+925231(Top 89%)14461(Top 90%)14461(Top 877%)
23M23.00 mi1.25 mi25486-10114819-3614819-3626681(Top 94%)15170(Top 94%)15170(Top 921%)
24M24.00 mi1.00 mi25547-6114840-2114840-2126194(Top 92%)14907(Top 93%)14907(Top 905%)
40K24.85 mi0.85 mi25594-4714849-914849-926084(Top 92%)14836(Top 92%)14836(Top 900%)
25.2M25.20 mi0.35 mi25637-4314864-1514864-1527111(Top 95%)15323(Top 95%)15323(Top 930%)
Finish26.22 mi1.02 mi25788-15114933-6914933-6927689(Top 97%)15666(Top 97%)15666(Top 951%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21story building
+97ft-345ft

Overall

25632

Males

14989

M55-59

14989

5K→10K

3.1 - 6.2 mi

Top 89%
×5story building
+79ft-138ft

Overall

25414

Males

14883

M55-59

14883

10K→15K

6.2 - 9.3 mi

Top 90%
×3story building
+67ft-78ft

Overall

25632

Males

14989

M55-59

14989

15K→20K

9.3 - 12.4 mi

Top 90%
×5story building
+106ft-86ft

Overall

25442

Males

14877

M55-59

14877

20K→Half

12.4 - 13.1 mi

Top 90%
×2story building
+19ft-37ft

Overall

25639

Males

14950

M55-59

14950

Half→25K

13.1 - 15.5 mi

Top 89%
×4story building
+66ft-88ft

Overall

25249

Males

14747

M55-59

14747

25K→30K

15.5 - 18.6 mi

Top 89%
×9story building
+181ft-148ft

Overall

25230

Males

14644

M55-59

14644

30K→20M

18.6 - 20.0 mi

Top 90%
×5story building
+64ft-50ft

Overall

25542

Males

14703

M55-59

14703

20M→21M

20.0 - 21.0 mi

Top 87%
×8story building
+106ft-24ft

Overall

24838

Males

14294

M55-59

14294

21M→35K

21.0 - 21.8 mi

Top 89%
×7story building
+17ft-86ft

Overall

25231

Males

14461

M55-59

14461

35K→23M

21.8 - 23.0 mi

Top 94%
×5story building
+23ft-63ft

Overall

26681

Males

15170

M55-59

15170

23M→24M

23.0 - 24.0 mi

Top 92%
×6story building
+12ft-82ft

Overall

26194

Males

14907

M55-59

14907

24M→40K

24.0 - 24.9 mi

Top 92%
×1story
+6ft-20ft

Overall

26084

Males

14836

M55-59

14836

40K→25.2M

24.9 - 25.2 mi

Top 95%
×1story
+13ft-16ft

Overall

27111

Males

15323

M55-59

15323

25.2M→Finish

25.2 - 26.2 mi

Top 97%
×2story building
+22ft-21ft

Overall

27689

Males

15666

M55-59

15666

Passing Analysis

Category:
Athletes Passed
822
Passed By
1450
Net Change
-628
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25160
5K → 10K132255-123#25160#25283
10K → 15K82256-174#25283#25457
15K → 20K1261260#25457#25457
20K → Half2819+9#25457#25448
Half → 25K11384+29#25448#25419
25K → 30K13598+37#25419#25382
30K → 20M4578-33#25382#25415
20M → 21M6336+27#25415#25388
21M → 35K3229+3#25388#25385
35K → 23M17118-101#25385#25486
23M → 24M2182-61#25486#25547
24M → 40K2370-47#25547#25594
40K → 25.2M346-43#25594#25637
25.2M → Finish2153-151#25637#25788
TOTALS8221450-628
📊

Passing Visuals

Category:
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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing