Boston Marathon logo
BOSTON MARATHON 2025

Katie Nolan

Bib: 10419•F

CO

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 15%
Gender (Female)
#0 / 12228
Top 3%
Division (F18-39)
#0 / 5469
Top 5%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:21
Rank: #6865
Start → 5K
21:21 | 6:52/mi
10K· 6.21 mi
42:27
Rank: #6599 (+266)
5K → 10K
21:06 | 6:47/mi
15K· 9.32 mi
1:03:42
Rank: #6520 (+79)
10K → 15K
21:15 | 6:50/mi
20K· 12.43 mi
1:24:54
Rank: #6246 (+274)
15K → 20K
21:12 | 6:49/mi
Half· 13.11 mi
1:29:31
Rank: #6210 (+36)
20K → Half
4:37 | 6:46/mi
25K· 15.53 mi
1:46:02
Rank: #5940 (+270)
Half → 25K
16:31 | 6:49/mi
30K· 18.64 mi
2:07:23
Rank: #5459 (+481)
25K → 30K
21:21 | 6:52/mi
20M
2:16:37
Rank: #5194 (+265)
30K → 20M
9:14 | 6:48/mi
21M
2:23:35
Rank: #4921 (+273)
20M → 21M
6:58 | 6:58/mi
35K· 21.75 mi
2:28:39
Rank: #4849 (+72)
21M → 35K
5:04 | 6:46/mi
23M
2:37:10
Rank: #4654 (+195)
35K → 23M
8:31 | 6:48/mi
24M
2:43:56
Rank: #4554 (+100)
23M → 24M
6:46 | 6:46/mi
40K· 24.85 mi
2:49:46
Rank: #4459 (+95)
24M → 40K
5:50 | 6:49/mi
25.2M
2:52:17
Rank: #4417 (+42)
40K → 25.2M
2:31 | 7:18/mi
Finish· 26.22 mi
2:58:51
Rank: #4298 (+119)
25.2M → Finish
6:34 | 6:27/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 Half⚖️ Balanced
Distance13.11 mi
Time1:29:31
Pace6:50 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:29:20
Pace6:49 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:2521:216:5221:21
6:52
-
10K
6.21 mi11:08:3142:276:5021:06
6:47
-0:05
15K
9.32 mi11:29:461:03:426:5021:15
6:50
+0:03
20K
12.43 mi11:50:581:24:546:5021:12
6:49
-0:01
Half
13.11 mi11:55:351:29:316:504:37
6:46
-0:03
25K
15.53 mi12:12:061:46:026:5016:31
6:49
+0:03
30K
18.64 mi12:33:272:07:236:5021:21
6:52
+0:03
20M
20.00 mi12:42:412:16:376:509:14
6:48
-0:04
21M
21.00 mi12:49:392:23:356:506:58
6:58
+0:10
35K
21.75 mi12:54:432:28:396:505:04
6:46
-0:12
23M
23.00 mi13:03:142:37:106:508:31
6:48
+0:02
24M
24.00 mi13:10:002:43:566:506:46
6:46
-0:02
40K
24.85 mi13:15:502:49:466:505:50
6:49
+0:03
25.2M
25.20 mi13:18:212:52:176:502:31
7:18
+0:29
Finish
26.22 mi13:24:552:58:516:506:34
6:27
-0:51

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

6:27 /mi

Average Pace

6:50 /mi

Slowest Pace

7:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:56:20

99% of race

Time at Steady Pace

2:31

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:49 /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 mi10:47:2521:216:5221:21
6:52
#6865
10K
6.21 mi11:08:3142:276:5021:06
6:47
#6599
15K
9.32 mi11:29:461:03:426:5021:15
6:50
#6520
20K
12.43 mi11:50:581:24:546:5021:12
6:49
#6246
Half
13.11 mi11:55:351:29:316:504:37
6:46
#6210
25K
15.53 mi12:12:061:46:026:5016:31
6:49
#5940
30K
18.64 mi12:33:272:07:236:5021:21
6:52
#5459
20M
20.00 mi12:42:412:16:376:509:14
6:48
#5194
21M
21.00 mi12:49:392:23:356:506:58
6:58
#4921
35K
21.75 mi12:54:432:28:396:505:04
6:46
#4849
23M
23.00 mi13:03:142:37:106:508:31
6:48
#4654
24M
24.00 mi13:10:002:43:566:506:46
6:46
#4554
40K
24.85 mi13:15:502:49:466:505:50
6:49
#4459
25.2M
25.20 mi13:18:212:52:176:502:31
7:18
#4417
Finish
26.22 mi13:24:552:58:516:506:34
6:27
#4298
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi68656446446488(Top 23%)612(Top 5%)612(Top 11%)
10K6.21 mi3.10 mi6599+266595+49595+496322(Top 22%)564(Top 5%)564(Top 10%)
15K9.32 mi3.11 mi6520+79604-9604-96488(Top 23%)612(Top 5%)612(Top 11%)
20K12.43 mi3.11 mi6246+274555+49555+495556(Top 20%)470(Top 4%)470(Top 9%)
Half13.11 mi0.68 mi6210+36548+7548+75906(Top 21%)504(Top 4%)504(Top 9%)
25K15.53 mi2.42 mi5940+270518+30518+304986(Top 18%)393(Top 3%)393(Top 7%)
30K18.64 mi3.11 mi5459+481441+77441+773914(Top 14%)297(Top 2%)297(Top 5%)
20M20.00 mi1.36 mi5194+265414+27414+272925(Top 10%)188(Top 2%)188(Top 3%)
21M21.00 mi1.00 mi4921+273374+40374+402159(Top 8%)134(Top 1%)134(Top 2%)
35K21.75 mi0.75 mi4849+72367+7367+74003(Top 14%)397(Top 3%)397(Top 7%)
23M23.00 mi1.25 mi4654+195353+14353+142745(Top 10%)214(Top 2%)214(Top 4%)
24M24.00 mi1.00 mi4554+100348+5348+53360(Top 12%)326(Top 3%)326(Top 6%)
40K24.85 mi0.85 mi4459+95343+5343+52992(Top 11%)286(Top 2%)286(Top 5%)
25.2M25.20 mi0.35 mi4417+42340+3340+32612(Top 9%)274(Top 2%)274(Top 5%)
Finish26.22 mi1.02 mi4298+119332+8332+82561(Top 9%)229(Top 2%)229(Top 4%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21stories
+97ft-345ft

Overall

6488

Females

612

F18-39

612

5K→10K

3.1 - 6.2 mi

Top 22%
×5stories
+79ft-138ft

Overall

6322

Females

564

F18-39

564

10K→15K

6.2 - 9.3 mi

Top 23%
×3stories
+67ft-78ft

Overall

6488

Females

612

F18-39

612

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5556

Females

470

F18-39

470

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5906

Females

504

F18-39

504

Half→25K

13.1 - 15.5 mi

Top 18%
×4stories
+66ft-88ft

Overall

4986

Females

393

F18-39

393

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

3914

Females

297

F18-39

297

30K→20M

18.6 - 20.0 mi

Top 10%
×5stories
+64ft-50ft

Overall

2925

Females

188

F18-39

188

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2159

Females

134

F18-39

134

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

4003

Females

397

F18-39

397

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2745

Females

214

F18-39

214

23M→24M

23.0 - 24.0 mi

Top 12%
×6stories
+12ft-82ft

Overall

3360

Females

326

F18-39

326

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

2992

Females

286

F18-39

286

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2612

Females

274

F18-39

274

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2stories
+22ft-21ft

Overall

2561

Females

229

F18-39

229

Passing Analysis

Category:
Athletes Passed
2879
Passed By
312
Net Change
+2567
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6865
5K → 10K35387+266#6865#6599
10K → 15K199120+79#6599#6520
15K → 20K29016+274#6520#6246
20K → Half4812+36#6246#6210
Half → 25K28212+270#6210#5940
25K → 30K4887+481#5940#5459
30K → 20M2683+265#5459#5194
20M → 21M2730+273#5194#4921
21M → 35K8917+72#4921#4849
35K → 23M2038+195#4849#4654
23M → 24M11212+100#4654#4554
24M → 40K10611+95#4554#4459
40K → 25.2M431+42#4459#4417
25.2M → Finish1256+119#4417#4298
TOTALS2879312+2567
📊

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