Boston Marathon logo
BOSTON MARATHON 2025

William Rehrig

Bib: 436•M

DE

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 0.7%
Gender (Male)
#0 / 16105
Top 1%
Division (M18-39)
#0 / 5642
Top 3%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
17:25
Rank: #311
Start → 5K
17:25 | 5:36/mi
10K· 6.21 mi
34:37
Rank: #267 (+44)
5K → 10K
17:12 | 5:32/mi
15K· 9.32 mi
51:48
Rank: #245 (+22)
10K → 15K
17:11 | 5:32/mi
20K· 12.43 mi
1:09:02
Rank: #214 (+31)
15K → 20K
17:14 | 5:33/mi
Half· 13.11 mi
1:12:42
Rank: #210 (+4)
20K → Half
3:40 | 5:22/mi
25K· 15.53 mi
1:26:09
Rank: #190 (+20)
Half → 25K
13:27 | 5:33/mi
30K· 18.64 mi
1:43:58
Rank: #182 (+8)
25K → 30K
17:49 | 5:44/mi
20M
1:52:00
Rank: #184 (-2)
30K → 20M
8:02 | 5:55/mi
21M
1:58:23
Rank: #185 (-1)
20M → 21M
6:23 | 6:23/mi
35K· 21.75 mi
2:02:40
Rank: #182 (+3)
21M → 35K
4:17 | 5:44/mi
23M
2:10:19
Rank: #182
35K → 23M
7:39 | 6:07/mi
24M
2:16:21
Rank: #184 (-2)
23M → 24M
6:02 | 6:02/mi
40K· 24.85 mi
2:21:33
Rank: #187 (-3)
24M → 40K
5:12 | 6:05/mi
25.2M
2:23:51
Rank: #190 (-3)
40K → 25.2M
2:18 | 6:40/mi
Finish· 26.22 mi
2:29:49
Rank: #197 (-7)
25.2M → Finish
5:58 | 5:51/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
Time1:12:42
Pace5:33 /mi
2nd Half
Distance13.11 mi
Time1:17:07
Pace5:53 /mi
📊Positive Split: 6.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:17:4017:255:3617:25
5:36
-
10K
6.21 mi10:34:5234:375:3417:12
5:32
-0:04
15K
9.32 mi10:52:0351:485:3317:11
5:32
0:00
20K
12.43 mi11:09:171:09:025:3317:14
5:33
+0:01
Half
13.11 mi11:12:571:12:425:333:40
5:22
-0:11
25K
15.53 mi11:26:241:26:095:3313:27
5:33
+0:11
30K
18.64 mi11:44:131:43:585:3517:49
5:44
+0:11
20M
20.00 mi11:52:151:52:005:368:02
5:55
+0:11
21M
21.00 mi11:58:381:58:235:386:23
6:23
+0:28
35K
21.75 mi12:02:552:02:405:384:17
5:44
-0:39
23M
23.00 mi12:10:342:10:195:407:39
6:07
+0:23
24M
24.00 mi12:16:362:16:215:416:02
6:02
-0:05
40K
24.85 mi12:21:482:21:335:425:12
6:05
+0:03
25.2M
25.20 mi12:24:062:23:515:432:18
6:40
+0:35
Finish
26.22 mi12:30:042:29:495:435:58
5:51
-0:49

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

5:22 /mi

Average Pace

5:43 /mi

Slowest Pace

6:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:08:44

46% of race

Time at Steady Pace

45:29

30% of race

Time at Slower Pace

35:36

24% of race

Average Pace: 5:43 /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 mi10:17:4017:255:3617:25
5:36
#311
10K
6.21 mi10:34:5234:375:3417:12
5:32
#267
15K
9.32 mi10:52:0351:485:3317:11
5:32
#245
20K
12.43 mi11:09:171:09:025:3317:14
5:33
#214
Half
13.11 mi11:12:571:12:425:333:40
5:22
#210
25K
15.53 mi11:26:241:26:095:3313:27
5:33
#190
30K
18.64 mi11:44:131:43:585:3517:49
5:44
#182
20M
20.00 mi11:52:151:52:005:368:02
5:55
#184
21M
21.00 mi11:58:381:58:235:386:23
6:23
#185
35K
21.75 mi12:02:552:02:405:384:17
5:44
#182
23M
23.00 mi12:10:342:10:195:407:39
6:07
#182
24M
24.00 mi12:16:362:16:215:416:02
6:02
#184
40K
24.85 mi12:21:482:21:335:425:12
6:05
#187
25.2M
25.20 mi12:24:062:23:515:432:18
6:40
#190
Finish
26.22 mi12:30:042:29:495:435:58
5:51
#197
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi311282282182(Top 0.6%)157(Top 1.0%)157(Top 3%)
10K6.21 mi3.10 mi267+44238+44238+44233(Top 0.8%)204(Top 1%)204(Top 4%)
15K9.32 mi3.11 mi245+22217+21217+21182(Top 0.6%)157(Top 1.0%)157(Top 3%)
20K12.43 mi3.11 mi214+31188+29188+29157(Top 0.6%)135(Top 0.8%)135(Top 2%)
Half13.11 mi0.68 mi210+4184+4184+4102(Top 0.4%)101(Top 0.6%)101(Top 2%)
25K15.53 mi2.42 mi190+20165+19165+19154(Top 0.5%)133(Top 0.8%)133(Top 2%)
30K18.64 mi3.11 mi182+8159+6159+6190(Top 0.7%)168(Top 1%)168(Top 3%)
20M20.00 mi1.36 mi184-2162-3162-3280(Top 1.0%)258(Top 2%)258(Top 5%)
21M21.00 mi1.00 mi185-1163-1163-1478(Top 2%)449(Top 3%)449(Top 8%)
35K21.75 mi0.75 mi182+3160+3160+3280(Top 1.0%)259(Top 2%)259(Top 5%)
23M23.00 mi1.25 mi182161-1161-1492(Top 2%)464(Top 3%)464(Top 8%)
24M24.00 mi1.00 mi184-2163-2163-2629(Top 2%)588(Top 4%)588(Top 10%)
40K24.85 mi0.85 mi187-3166-3166-3489(Top 2%)455(Top 3%)455(Top 8%)
25.2M25.20 mi0.35 mi190-3169-3169-3674(Top 2%)624(Top 4%)624(Top 11%)
Finish26.22 mi1.02 mi197-7175-6175-6588(Top 2%)550(Top 3%)550(Top 10%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 0.6%
×21stories
+97ft-345ft

Overall

182

Males

157

M18-39

157

5K→10K

3.1 - 6.2 mi

Top 0.8%
×5stories
+79ft-138ft

Overall

233

Males

204

M18-39

204

10K→15K

6.2 - 9.3 mi

Top 0.6%
×3stories
+67ft-78ft

Overall

182

Males

157

M18-39

157

15K→20K

9.3 - 12.4 mi

Top 0.6%
×5stories
+106ft-86ft

Overall

157

Males

135

M18-39

135

20K→Half

12.4 - 13.1 mi

Top 0.4%
×2stories
+19ft-37ft

Overall

102

Males

101

M18-39

101

Half→25K

13.1 - 15.5 mi

Top 0.5%
×4stories
+66ft-88ft

Overall

154

Males

133

M18-39

133

25K→30K

15.5 - 18.6 mi

Top 0.7%
×9stories
+181ft-148ft

Overall

190

Males

168

M18-39

168

30K→20M

18.6 - 20.0 mi

Top 1.0%
×5stories
+64ft-50ft

Overall

280

Males

258

M18-39

258

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

478

Males

449

M18-39

449

21M→35K

21.0 - 21.8 mi

Top 1.0%
×7stories
+17ft-86ft

Overall

280

Males

259

M18-39

259

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

492

Males

464

M18-39

464

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

629

Males

588

M18-39

588

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

489

Males

455

M18-39

455

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

674

Males

624

M18-39

624

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

588

Males

550

M18-39

550

Passing Analysis

Category:
Athletes Passed
160
Passed By
46
Net Change
+114
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#311
5K → 10K462+44#311#267
10K → 15K220+22#267#245
15K → 20K310+31#245#214
20K → Half40+4#214#210
Half → 25K200+20#210#190
25K → 30K179+8#190#182
30K → 20M35-2#182#184
20M → 21M12-1#184#185
21M → 35K41+3#185#182
35K → 23M770#182#182
23M → 24M02-2#182#184
24M → 40K14-3#184#187
40K → 25.2M14-3#187#190
25.2M → Finish310-7#190#197
TOTALS16046+114
📊

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