Boston Marathon logo
BOSTON MARATHON 2025

Tim Modderman

Bib: 6166•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 17%
Gender (Male)
#0 / 16105
Top 27%
Masters (Masters Men)
#0 / 10463
Top 13%
Division (M40-44)
#0 / 2247
Top 33%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:28
Rank: #4480
Start → 5K
20:28 | 6:35/mi
10K· 6.21 mi
41:26
Rank: #5077 (-597)
5K → 10K
20:58 | 6:45/mi
15K· 9.32 mi
1:02:34
Rank: #5372 (-295)
10K → 15K
21:08 | 6:48/mi
20K· 12.43 mi
1:24:01
Rank: #5575 (-203)
15K → 20K
21:27 | 6:54/mi
Half· 13.11 mi
1:28:41
Rank: #5621 (-46)
20K → Half
4:40 | 6:50/mi
25K· 15.53 mi
1:45:22
Rank: #5562 (+59)
Half → 25K
16:41 | 6:53/mi
30K· 18.64 mi
2:07:23
Rank: #5451 (+111)
25K → 30K
22:01 | 7:05/mi
20M
2:16:55
Rank: #5324 (+127)
30K → 20M
9:32 | 7:01/mi
21M
2:24:19
Rank: #5209 (+115)
20M → 21M
7:24 | 7:24/mi
35K· 21.75 mi
2:29:24
Rank: #5151 (+58)
21M → 35K
5:05 | 6:48/mi
23M
2:38:13
Rank: #5044 (+107)
35K → 23M
8:49 | 7:03/mi
24M
2:45:06
Rank: #4965 (+79)
23M → 24M
6:53 | 6:53/mi
40K· 24.85 mi
2:51:01
Rank: #4877 (+88)
24M → 40K
5:55 | 6:55/mi
25.2M
2:53:38
Rank: #4840 (+37)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
3:00:03
Rank: #4698 (+142)
25.2M → Finish
6:25 | 6:18/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
Time1:28:41
Pace6:46 /mi
2nd Half
Distance13.11 mi
Time1:31:22
Pace6:58 /mi
📊Positive Split: 3.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:5520:286:3520:28
6:35
-
10K
6.21 mi10:46:5341:266:4020:58
6:45
+0:10
15K
9.32 mi11:08:011:02:346:4321:08
6:48
+0:03
20K
12.43 mi11:29:281:24:016:4621:27
6:54
+0:06
Half
13.11 mi11:34:081:28:416:464:40
6:50
-0:04
25K
15.53 mi11:50:491:45:226:4716:41
6:53
+0:03
30K
18.64 mi12:12:502:07:236:5022:01
7:05
+0:12
20M
20.00 mi12:22:222:16:556:519:32
7:01
-0:04
21M
21.00 mi12:29:462:24:196:527:24
7:24
+0:23
35K
21.75 mi12:34:512:29:246:525:05
6:48
-0:36
23M
23.00 mi12:43:402:38:136:538:49
7:03
+0:15
24M
24.00 mi12:50:332:45:066:536:53
6:53
-0:10
40K
24.85 mi12:56:282:51:016:535:55
6:55
+0:02
25.2M
25.20 mi12:59:052:53:386:532:37
7:35
+0:40
Finish
26.22 mi13:05:303:00:036:526:25
6:18
-1:17

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

6:18 /mi

Average Pace

6:52 /mi

Slowest Pace

7:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

26:53

15% of race

Time at Steady Pace

1:52:19

62% of race

Time at Slower Pace

40:51

23% of race

Average Pace: 6:52 /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 mi10:25:5520:286:3520:28
6:35
#4480
10K
6.21 mi10:46:5341:266:4020:58
6:45
#5077
15K
9.32 mi11:08:011:02:346:4321:08
6:48
#5372
20K
12.43 mi11:29:281:24:016:4621:27
6:54
#5575
Half
13.11 mi11:34:081:28:416:464:40
6:50
#5621
25K
15.53 mi11:50:491:45:226:4716:41
6:53
#5562
30K
18.64 mi12:12:502:07:236:5022:01
7:05
#5451
20M
20.00 mi12:22:222:16:556:519:32
7:01
#5324
21M
21.00 mi12:29:462:24:196:527:24
7:24
#5209
35K
21.75 mi12:34:512:29:246:525:05
6:48
#5151
23M
23.00 mi12:43:402:38:136:538:49
7:03
#5044
24M
24.00 mi12:50:332:45:066:536:53
6:53
#4965
40K
24.85 mi12:56:282:51:016:535:55
6:55
#4877
25.2M
25.20 mi12:59:052:53:386:532:37
7:35
#4840
Finish
26.22 mi13:05:303:00:036:526:25
6:18
#4698
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4480421242126082(Top 21%)5522(Top 34%)5522(Top 246%)
10K6.21 mi3.10 mi5077-5974730-5184730-5185808(Top 20%)5316(Top 33%)5316(Top 237%)
15K9.32 mi3.11 mi5372-2954974-2444974-2446082(Top 21%)5522(Top 34%)5522(Top 246%)
20K12.43 mi3.11 mi5575-2035131-1575131-1576206(Top 22%)5590(Top 35%)5590(Top 249%)
Half13.11 mi0.68 mi5621-465165-345165-346388(Top 22%)5728(Top 36%)5728(Top 255%)
25K15.53 mi2.42 mi5562+595110+555110+555494(Top 19%)4984(Top 31%)4984(Top 222%)
30K18.64 mi3.11 mi5451+1114999+1114999+1115227(Top 18%)4718(Top 29%)4718(Top 210%)
20M20.00 mi1.36 mi5324+1274876+1234876+1234178(Top 15%)3817(Top 24%)3817(Top 170%)
21M21.00 mi1.00 mi5209+1154777+994777+994099(Top 14%)3697(Top 23%)3697(Top 165%)
35K21.75 mi0.75 mi5151+584722+554722+554057(Top 14%)3632(Top 23%)3632(Top 162%)
23M23.00 mi1.25 mi5044+1074620+1024620+1023998(Top 14%)3568(Top 22%)3568(Top 159%)
24M24.00 mi1.00 mi4965+794542+784542+783969(Top 14%)3508(Top 22%)3508(Top 156%)
40K24.85 mi0.85 mi4877+884463+794463+793447(Top 12%)3066(Top 19%)3066(Top 136%)
25.2M25.20 mi0.35 mi4840+374429+344429+343779(Top 13%)3261(Top 20%)3261(Top 145%)
Finish26.22 mi1.02 mi4698+1424300+1294300+1291873(Top 7%)1728(Top 11%)1728(Top 77%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21stories
+97ft-345ft

Overall

6082

Males

5522

M40-44

5522

5K→10K

3.1 - 6.2 mi

Top 20%
×5stories
+79ft-138ft

Overall

5808

Males

5316

M40-44

5316

10K→15K

6.2 - 9.3 mi

Top 21%
×3stories
+67ft-78ft

Overall

6082

Males

5522

M40-44

5522

15K→20K

9.3 - 12.4 mi

Top 22%
×5stories
+106ft-86ft

Overall

6206

Males

5590

M40-44

5590

20K→Half

12.4 - 13.1 mi

Top 22%
×2stories
+19ft-37ft

Overall

6388

Males

5728

M40-44

5728

Half→25K

13.1 - 15.5 mi

Top 19%
×4stories
+66ft-88ft

Overall

5494

Males

4984

M40-44

4984

25K→30K

15.5 - 18.6 mi

Top 18%
×9stories
+181ft-148ft

Overall

5227

Males

4718

M40-44

4718

30K→20M

18.6 - 20.0 mi

Top 15%
×5stories
+64ft-50ft

Overall

4178

Males

3817

M40-44

3817

20M→21M

20.0 - 21.0 mi

Top 14%
×8stories
+106ft-24ft

Overall

4099

Males

3697

M40-44

3697

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

4057

Males

3632

M40-44

3632

35K→23M

21.8 - 23.0 mi

Top 14%
×5stories
+23ft-63ft

Overall

3998

Males

3568

M40-44

3568

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3969

Males

3508

M40-44

3508

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3447

Males

3066

M40-44

3066

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3779

Males

3261

M40-44

3261

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2stories
+22ft-21ft

Overall

1873

Males

1728

M40-44

1728

Passing Analysis

Category:
Athletes Passed
1417
Passed By
1635
Net Change
-218
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4480
5K → 10K32629-597#4480#5077
10K → 15K53348-295#5077#5372
15K → 20K70273-203#5372#5575
20K → Half1056-46#5575#5621
Half → 25K14182+59#5621#5562
25K → 30K227116+111#5562#5451
30K → 20M15124+127#5451#5324
20M → 21M14227+115#5324#5209
21M → 35K7012+58#5209#5151
35K → 23M13629+107#5151#5044
23M → 24M9920+79#5044#4965
24M → 40K10315+88#4965#4877
40K → 25.2M414+37#4877#4840
25.2M → Finish1420+142#4840#4698
TOTALS14171635-218
📊

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