All Results|Race Analytics|Course|Contact
BOSTON MARATHON 2025

Ian Webb

Bib: 809•M

CO

Boston Marathon logo
0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 0.8%
Gender (Male)
#0 / 16105
Top 1%
Age Group (M18-39)
#0 / 5642
Top 3%
Race Day Weather
50°/40°F
broken clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
17:31
Rank: #347
Start → 5K
17:31 | 5:38/mi
10K· 6.21 mi
34:59
Rank: #326 (+21)
5K → 10K
17:28 | 5:37/mi
15K· 9.32 mi
52:31
Rank: #311 (+15)
10K → 15K
17:32 | 5:39/mi
20K· 12.43 mi
1:10:08
Rank: #301 (+10)
15K → 20K
17:37 | 5:40/mi
Half· 13.11 mi
1:13:52
Rank: #290 (+11)
20K → Half
3:44 | 5:28/mi
25K· 15.53 mi
1:27:22
Rank: #264 (+26)
Half → 25K
13:30 | 5:34/mi
30K· 18.64 mi
1:45:09
Rank: #226 (+38)
25K → 30K
17:47 | 5:43/mi
20M
1:53:08
Rank: #221 (+5)
30K → 20M
7:59 | 5:52/mi
21M
1:59:25
Rank: #220 (+1)
20M → 21M
6:17 | 6:17/mi
35K· 21.75 mi
2:03:45
Rank: #224 (-4)
21M → 35K
4:20 | 5:48/mi
23M
2:11:15
Rank: #221 (+3)
35K → 23M
7:30 | 5:59/mi
24M
2:17:11
Rank: #225 (-4)
23M → 24M
5:56 | 5:56/mi
40K· 24.85 mi
2:22:12
Rank: #218 (+7)
24M → 40K
5:01 | 5:52/mi
25.2M
2:24:24
Rank: #216 (+2)
40K → 25.2M
2:12 | 6:23/mi
Finish· 26.22 mi
2:30:13
Rank: #215 (+1)
25.2M → Finish
5:49 | 5:42/mi
Is this your race?

Claim it — get your free Race Performance Report

An AI deep-dive into your pacing, rankings, and passing — built from your real splits and emailed to you, free.

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.11 mi
Time1:13:52
Pace5:38 /mi
2nd Half
Distance13.11 mi
Time1:16:21
Pace5:49 /mi
📊Positive Split: 3.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:17:3917:315:3817:31
5:38
-
10K
6.21 mi10:35:0734:595:3817:28
5:37
-0:01
15K
9.32 mi10:52:3952:315:3817:32
5:39
+0:02
20K
12.43 mi11:10:161:10:085:3917:37
5:40
+0:01
Half
13.11 mi11:14:001:13:525:383:44
5:28
-0:12
25K
15.53 mi11:27:301:27:225:3713:30
5:34
+0:06
30K
18.64 mi11:45:171:45:095:3817:47
5:43
+0:09
20M
20.00 mi11:53:161:53:085:397:59
5:52
+0:09
21M
21.00 mi11:59:331:59:255:416:17
6:17
+0:25
35K
21.75 mi12:03:532:03:455:414:20
5:48
-0:29
23M
23.00 mi12:11:232:11:155:427:30
5:59
+0:11
24M
24.00 mi12:17:192:17:115:435:56
5:56
-0:03
40K
24.85 mi12:22:202:22:125:435:01
5:52
-0:04
25.2M
25.20 mi12:24:322:24:245:442:12
6:23
+0:31
Finish
26.22 mi12:30:212:30:135:445:49
5:42
-0:41

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

5:28 /mi

Average Pace

5:44 /mi

Slowest Pace

6:23 /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

2:21:44

94% of race

Time at Steady Pace

8:29

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:44 /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 mi10:17:3917:315:3817:31
5:38
#347
10K
6.21 mi10:35:0734:595:3817:28
5:37
#326
15K
9.32 mi10:52:3952:315:3817:32
5:39
#311
20K
12.43 mi11:10:161:10:085:3917:37
5:40
#301
Half
13.11 mi11:14:001:13:525:383:44
5:28
#290
25K
15.53 mi11:27:301:27:225:3713:30
5:34
#264
30K
18.64 mi11:45:171:45:095:3817:47
5:43
#226
20M
20.00 mi11:53:161:53:085:397:59
5:52
#221
21M
21.00 mi11:59:331:59:255:416:17
6:17
#220
35K
21.75 mi12:03:532:03:455:414:20
5:48
#224
23M
23.00 mi12:11:232:11:155:427:30
5:59
#221
24M
24.00 mi12:17:192:17:115:435:56
5:56
#225
40K
24.85 mi12:22:202:22:125:435:01
5:52
#218
25.2M
25.20 mi12:24:322:24:245:442:12
6:23
#216
Finish
26.22 mi12:30:212:30:135:445:49
5:42
#215
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi347314314296(Top 1%)268(Top 2%)268(Top 5%)
10K6.21 mi3.10 mi326+21297+17297+17323(Top 1%)294(Top 2%)294(Top 5%)
15K9.32 mi3.11 mi311+15282+15282+15296(Top 1%)268(Top 2%)268(Top 5%)
20K12.43 mi3.11 mi301+10272+10272+10279(Top 1.0%)253(Top 2%)253(Top 4%)
Half13.11 mi0.68 mi290+11261+11261+11174(Top 0.6%)154(Top 1.0%)154(Top 3%)
25K15.53 mi2.42 mi264+26238+23238+23172(Top 0.6%)149(Top 0.9%)149(Top 3%)
30K18.64 mi3.11 mi226+38201+37201+37183(Top 0.6%)161(Top 1.0%)161(Top 3%)
20M20.00 mi1.36 mi221+5198+3198+3243(Top 0.9%)223(Top 1%)223(Top 4%)
21M21.00 mi1.00 mi220+1197+1197+1343(Top 1%)320(Top 2%)320(Top 6%)
35K21.75 mi0.75 mi224-4202-5202-5354(Top 1%)329(Top 2%)329(Top 6%)
23M23.00 mi1.25 mi221+3198+4198+4318(Top 1%)296(Top 2%)296(Top 5%)
24M24.00 mi1.00 mi225-4203-5203-5449(Top 2%)415(Top 3%)415(Top 7%)
40K24.85 mi0.85 mi218+7196+7196+7242(Top 0.9%)222(Top 1%)222(Top 4%)
25.2M25.20 mi0.35 mi216+2194+2194+2285(Top 1%)263(Top 2%)263(Top 5%)
Finish26.22 mi1.02 mi215+1193+1193+1365(Top 1%)342(Top 2%)342(Top 6%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1%
×21stories
+97ft-345ft

Overall

296

Males

268

M18-39

268

5K→10K

3.1 - 6.2 mi

Top 1%
×5stories
+79ft-138ft

Overall

323

Males

294

M18-39

294

10K→15K

6.2 - 9.3 mi

Top 1%
×3stories
+67ft-78ft

Overall

296

Males

268

M18-39

268

15K→20K

9.3 - 12.4 mi

Top 1.0%
×5stories
+106ft-86ft

Overall

279

Males

253

M18-39

253

20K→Half

12.4 - 13.1 mi

Top 0.6%
×2stories
+19ft-37ft

Overall

174

Males

154

M18-39

154

Half→25K

13.1 - 15.5 mi

Top 0.6%
×4stories
+66ft-88ft

Overall

172

Males

149

M18-39

149

25K→30K

15.5 - 18.6 mi

Top 0.6%
×9stories
+181ft-148ft

Overall

183

Males

161

M18-39

161

30K→20M

18.6 - 20.0 mi

Top 0.9%
×5stories
+64ft-50ft

Overall

243

Males

223

M18-39

223

20M→21M

20.0 - 21.0 mi

Top 1%
×8stories
+106ft-24ft

Overall

343

Males

320

M18-39

320

21M→35K

21.0 - 21.8 mi

Top 1%
×7stories
+17ft-86ft

Overall

354

Males

329

M18-39

329

35K→23M

21.8 - 23.0 mi

Top 1%
×5stories
+23ft-63ft

Overall

318

Males

296

M18-39

296

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

449

Males

415

M18-39

415

24M→40K

24.0 - 24.9 mi

Top 0.9%
×1story
+6ft-20ft

Overall

242

Males

222

M18-39

222

40K→25.2M

24.9 - 25.2 mi

Top 1%
×1story
+13ft-16ft

Overall

285

Males

263

M18-39

263

25.2M→Finish

25.2 - 26.2 mi

Top 1%
×2stories
+22ft-21ft

Overall

365

Males

342

M18-39

342

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
198
Passed By
66
Net Change
+132
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#347
5K → 10K309+21#347#326
10K → 15K249+15#326#311
15K → 20K2010+10#311#301
20K → Half110+11#301#290
Half → 25K271+26#290#264
25K → 30K391+38#264#226
30K → 20M72+5#226#221
20M → 21M109+1#221#220
21M → 35K26-4#220#224
35K → 23M85+3#224#221
23M → 24M59-4#221#225
24M → 40K92+7#225#218
40K → 25.2M20+2#218#216
25.2M → Finish43+1#216#215
TOTALS19866+132
📊

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...

Activity Data

Upload your GPX file to see detailed activity metrics

Upload your GPX file

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

.gpx files up to 10MB

Export & Support

Download your data, get help, and share your feedback

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