Boston Marathon logo
BOSTON MARATHON 2025

Nellie Hernandez

Bib: 29389•F

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F45-49)
#0 / 1813
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
9:42/mi
30:09
↑ 97↓ 3451.5%
10K· 6.21 mi
9:31/mi
59:43
↑ 79↓ 1380.4%
15K· 9.32 mi
9:30/mi
1:29:14
↑ 67↓ 78
20K· 12.43 mi
9:40/mi
1:59:16
↑ 106↓ 860.1%
Half· 13.11 mi
9:18/mi
2:05:37
↑ 19↓ 370.5%
25K· 15.53 mi
9:23/mi
2:28:21
↑ 66↓ 880.2%
30K· 18.64 mi
9:32/mi
2:57:58
↑ 181↓ 1480.2%
20M
9:27/mi
3:10:48
↑ 64↓ 500.2%
21M
9:56/mi
3:20:44
↑ 106↓ 241.6%
35K· 21.75 mi
8:52/mi
3:27:22
↑ 17↓ 861.7%
23M
9:11/mi
3:38:52
↑ 23↓ 630.6%
24M
8:53/mi
3:47:45
↓ 821.3%
40K· 24.85 mi
8:58/mi
3:55:25
↓ 200.3%
25.2M
9:43/mi
3:58:46
↑ 13↓ 160.2%
Finish· 26.22 mi
8:56/mi
4:07:52
↑ 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 Half
Distance13.11 mi
Time2:05:37
Pace9:35 /mi
2nd Half✓ Faster
Distance13.11 mi
Time2:02:15
Pace9:20 /mi
📊Negative Split: 2.7% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:54:1130:099:4230:09
9:42
-
10K
6.21 mi12:23:4559:439:3729:34
9:31
-0:11
15K
9.32 mi12:53:161:29:149:3429:31
9:30
-0:01
20K
12.43 mi13:23:181:59:169:3630:02
9:40
+0:10
Half
13.11 mi13:29:392:05:379:356:21
9:18
-0:22
25K
15.53 mi13:52:232:28:219:3322:44
9:23
+0:05
30K
18.64 mi14:22:002:57:589:3329:37
9:32
+0:09
20M
20.00 mi14:34:503:10:489:3212:50
9:27
-0:05
21M
21.00 mi14:44:463:20:449:349:56
9:56
+0:29
35K
21.75 mi14:51:243:27:229:326:38
8:52
-1:04
23M
23.00 mi15:02:543:38:529:3111:30
9:11
+0:19
24M
24.00 mi15:11:473:47:459:298:53
8:53
-0:18
40K
24.85 mi15:19:273:55:259:287:40
8:58
+0:05
25.2M
25.20 mi15:22:483:58:469:283:21
9:43
+0:45
Finish
26.22 mi15:31:544:07:529:289:06
8:56
-0:47

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

8:52 /mi

Average Pace

9:28 /mi

Slowest Pace

9:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:57:56

96% of race

Time at Steady Pace

9:56

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:27 /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 mi11:54:1130:099:4230:09
9:42
#24857
10K
6.21 mi12:23:4559:439:3729:34
9:31
#24481
15K
9.32 mi12:53:161:29:149:3429:31
9:30
#24249
20K
12.43 mi13:23:181:59:169:3630:02
9:40
#24007
Half
13.11 mi13:29:392:05:379:356:21
9:18
#23951
25K
15.53 mi13:52:232:28:219:3322:44
9:23
#23557
30K
18.64 mi14:22:002:57:589:3329:37
9:32
#22942
20M
20.00 mi14:34:503:10:489:3212:50
9:27
#22681
21M
21.00 mi14:44:463:20:449:349:56
9:56
#22438
35K
21.75 mi14:51:243:27:229:326:38
8:52
#22288
23M
23.00 mi15:02:543:38:529:3111:30
9:11
#22010
24M
24.00 mi15:11:473:47:459:298:53
8:53
#21815
40K
24.85 mi15:19:273:55:259:287:40
8:58
#21645
25.2M
25.20 mi15:22:483:58:469:283:21
9:43
#21559
Finish
26.22 mi15:31:544:07:529:289:06
8:56
#21454
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi24857101361013623750(Top 84%)9513(Top 78%)9513(Top 525%)
10K6.21 mi3.10 mi24481+3769938+1989938+19824160(Top 85%)9776(Top 80%)9776(Top 539%)
15K9.32 mi3.11 mi24249+2329816+1229816+12223750(Top 84%)9513(Top 78%)9513(Top 525%)
20K12.43 mi3.11 mi24007+2429697+1199697+11923393(Top 82%)9361(Top 77%)9361(Top 516%)
Half13.11 mi0.68 mi23951+569668+299668+2922993(Top 81%)9137(Top 75%)9137(Top 504%)
25K15.53 mi2.42 mi23557+3949455+2139455+21321467(Top 76%)8342(Top 68%)8342(Top 460%)
30K18.64 mi3.11 mi22942+6159151+3049151+30420078(Top 71%)7700(Top 63%)7700(Top 425%)
20M20.00 mi1.36 mi22681+2619033+1189033+11818939(Top 67%)7238(Top 59%)7238(Top 399%)
21M21.00 mi1.00 mi22438+2438909+1248909+12418077(Top 64%)6841(Top 56%)6841(Top 377%)
35K21.75 mi0.75 mi22288+1508839+708839+7017652(Top 62%)6727(Top 55%)6727(Top 371%)
23M23.00 mi1.25 mi22010+2788722+1178722+11717293(Top 61%)6609(Top 54%)6609(Top 365%)
24M24.00 mi1.00 mi21815+1958638+848638+8416813(Top 59%)6403(Top 52%)6403(Top 353%)
40K24.85 mi0.85 mi21645+1708565+738565+7316172(Top 57%)6153(Top 50%)6153(Top 339%)
25.2M25.20 mi0.35 mi21559+868517+488517+4815803(Top 56%)6014(Top 49%)6014(Top 332%)
Finish26.22 mi1.02 mi21454+1058477+408477+4018709(Top 66%)7444(Top 61%)7444(Top 411%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21story building
+97ft-345ft

Overall

23750

Females

9513

F45-49

9513

5K→10K

3.1 - 6.2 mi

Top 85%
×5story building
+79ft-138ft

Overall

24160

Females

9776

F45-49

9776

10K→15K

6.2 - 9.3 mi

Top 84%
×3story building
+67ft-78ft

Overall

23750

Females

9513

F45-49

9513

15K→20K

9.3 - 12.4 mi

Top 82%
×5story building
+106ft-86ft

Overall

23393

Females

9361

F45-49

9361

20K→Half

12.4 - 13.1 mi

Top 81%
×2story building
+19ft-37ft

Overall

22993

Females

9137

F45-49

9137

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

21467

Females

8342

F45-49

8342

25K→30K

15.5 - 18.6 mi

Top 71%
×9story building
+181ft-148ft

Overall

20078

Females

7700

F45-49

7700

30K→20M

18.6 - 20.0 mi

Top 67%
×5story building
+64ft-50ft

Overall

18939

Females

7238

F45-49

7238

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

18077

Females

6841

F45-49

6841

21M→35K

21.0 - 21.8 mi

Top 62%
×7story building
+17ft-86ft

Overall

17652

Females

6727

F45-49

6727

35K→23M

21.8 - 23.0 mi

Top 61%
×5story building
+23ft-63ft

Overall

17293

Females

6609

F45-49

6609

23M→24M

23.0 - 24.0 mi

Top 59%
×6story building
+12ft-82ft

Overall

16813

Females

6403

F45-49

6403

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

16172

Females

6153

F45-49

6153

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

15803

Females

6014

F45-49

6014

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2story building
+22ft-21ft

Overall

18709

Females

7444

F45-49

7444

Passing Analysis

Category:
Athletes Passed
3581
Passed By
178
Net Change
+3403
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24857
5K → 10K43862+376#24857#24481
10K → 15K28452+232#24481#24249
15K → 20K27028+242#24249#24007
20K → Half648+56#24007#23951
Half → 25K3973+394#23951#23557
25K → 30K6205+615#23557#22942
30K → 20M2632+261#22942#22681
20M → 21M2474+243#22681#22438
21M → 35K1522+150#22438#22288
35K → 23M2791+278#22288#22010
23M → 24M1950+195#22010#21815
24M → 40K1744+170#21815#21645
40K → 25.2M860+86#21645#21559
25.2M → Finish1127+105#21559#21454
TOTALS3581178+3403
📊

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