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BOSTON MARATHON 2025

Monica Lopez Isler

Bib: 18189•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 40%
Gender (Female)
#0 / 12228
Top 25%
Division (F18-39)
#0 / 5469
Top 42%
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
7:43/mi
24:00
↑ 97↓ 3451.5%
10K· 6.21 mi
7:42/mi
47:55
↑ 79↓ 1380.4%
15K· 9.32 mi
7:41/mi
1:11:46
↑ 67↓ 78
20K· 12.43 mi
7:43/mi
1:35:45
↑ 106↓ 860.1%
Half· 13.11 mi
7:34/mi
1:40:55
↑ 19↓ 370.5%
25K· 15.53 mi
7:40/mi
1:59:30
↑ 66↓ 880.2%
30K· 18.64 mi
7:53/mi
2:23:58
↑ 181↓ 1480.2%
20M
7:57/mi
2:34:46
↑ 64↓ 500.2%
21M
8:36/mi
2:43:22
↑ 106↓ 241.6%
35K· 21.75 mi
7:40/mi
2:49:06
↑ 17↓ 861.7%
23M
7:59/mi
2:59:06
↑ 23↓ 630.6%
24M
7:47/mi
3:06:53
↓ 821.3%
40K· 24.85 mi
8:01/mi
3:13:44
↓ 200.3%
25.2M
8:36/mi
3:16:42
↑ 13↓ 160.2%
Finish· 26.22 mi
7:37/mi
3:24:28
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:55
Pace7:42 /mi
2nd Half
Distance13.11 mi
Time1:43:33
Pace7:54 /mi
📊Positive Split: 2.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:2424:007:4324:00
7:43
-
10K
6.21 mi11:40:1947:557:4323:55
7:42
-0:01
15K
9.32 mi12:04:101:11:467:4223:51
7:41
-0:01
20K
12.43 mi12:28:091:35:457:4223:59
7:43
+0:02
Half
13.11 mi12:33:191:40:557:425:10
7:34
-0:09
25K
15.53 mi12:51:541:59:307:4218:35
7:40
+0:06
30K
18.64 mi13:16:222:23:587:4324:28
7:53
+0:13
20M
20.00 mi13:27:102:34:467:4410:48
7:57
+0:04
21M
21.00 mi13:35:462:43:227:478:36
8:36
+0:39
35K
21.75 mi13:41:302:49:067:475:44
7:40
-0:56
23M
23.00 mi13:51:302:59:067:4710:00
7:59
+0:19
24M
24.00 mi13:59:173:06:537:477:47
7:47
-0:12
40K
24.85 mi14:06:083:13:447:486:51
8:01
+0:14
25.2M
25.20 mi14:09:063:16:427:482:58
8:36
+0:35
Finish
26.22 mi14:16:523:24:287:487:46
7:37
-0:59

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

7:34 /mi

Average Pace

7:48 /mi

Slowest Pace

8:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:12:54

94% of race

Time at Steady Pace

11:34

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:48 /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 mi11:16:2424:007:4324:00
7:43
#14184
10K
6.21 mi11:40:1947:557:4323:55
7:42
#14004
15K
9.32 mi12:04:101:11:467:4223:51
7:41
#13740
20K
12.43 mi12:28:091:35:457:4223:59
7:43
#13410
Half
13.11 mi12:33:191:40:557:425:10
7:34
#13349
25K
15.53 mi12:51:541:59:307:4218:35
7:40
#12968
30K
18.64 mi13:16:222:23:587:4324:28
7:53
#12458
20M
20.00 mi13:27:102:34:467:4410:48
7:57
#12228
21M
21.00 mi13:35:462:43:227:478:36
8:36
#12130
35K
21.75 mi13:41:302:49:067:475:44
7:40
#12039
23M
23.00 mi13:51:302:59:067:4710:00
7:59
#11865
24M
24.00 mi13:59:173:06:537:477:47
7:47
#11749
40K
24.85 mi14:06:083:13:447:486:51
8:01
#11644
25.2M
25.20 mi14:09:063:16:427:482:58
8:36
#11597
Finish
26.22 mi14:16:523:24:287:487:46
7:37
#11496
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi141844020402013261(Top 47%)3587(Top 29%)3587(Top 66%)
10K6.21 mi3.10 mi14004+1803943+773943+7713886(Top 49%)3887(Top 32%)3887(Top 71%)
15K9.32 mi3.11 mi13740+2643818+1253818+12513261(Top 47%)3587(Top 29%)3587(Top 66%)
20K12.43 mi3.11 mi13410+3303665+1533665+15312599(Top 44%)3323(Top 27%)3323(Top 61%)
Half13.11 mi0.68 mi13349+613639+263639+2612397(Top 44%)3164(Top 26%)3164(Top 58%)
25K15.53 mi2.42 mi12968+3813455+1843455+18411294(Top 40%)2743(Top 22%)2743(Top 50%)
30K18.64 mi3.11 mi12458+5103245+2103245+21010471(Top 37%)2529(Top 21%)2529(Top 46%)
20M20.00 mi1.36 mi12228+2303154+913154+9110120(Top 36%)2495(Top 20%)2495(Top 46%)
21M21.00 mi1.00 mi12130+983141+133141+1311111(Top 39%)3151(Top 26%)3151(Top 58%)
35K21.75 mi0.75 mi12039+913118+233118+239850(Top 35%)2542(Top 21%)2542(Top 46%)
23M23.00 mi1.25 mi11865+1743069+493069+499953(Top 35%)2720(Top 22%)2720(Top 50%)
24M24.00 mi1.00 mi11749+1163048+213048+219720(Top 34%)2674(Top 22%)2674(Top 49%)
40K24.85 mi0.85 mi11644+1053020+283020+2810330(Top 36%)3094(Top 25%)3094(Top 57%)
25.2M25.20 mi0.35 mi11597+473009+113009+119511(Top 33%)2788(Top 23%)2788(Top 51%)
Finish26.22 mi1.02 mi11496+1013005+43005+410131(Top 36%)3051(Top 25%)3051(Top 56%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21story building
+97ft-345ft

Overall

13261

Females

3587

F18-39

3587

5K→10K

3.1 - 6.2 mi

Top 49%
×5story building
+79ft-138ft

Overall

13886

Females

3887

F18-39

3887

10K→15K

6.2 - 9.3 mi

Top 47%
×3story building
+67ft-78ft

Overall

13261

Females

3587

F18-39

3587

15K→20K

9.3 - 12.4 mi

Top 44%
×5story building
+106ft-86ft

Overall

12599

Females

3323

F18-39

3323

20K→Half

12.4 - 13.1 mi

Top 44%
×2story building
+19ft-37ft

Overall

12397

Females

3164

F18-39

3164

Half→25K

13.1 - 15.5 mi

Top 40%
×4story building
+66ft-88ft

Overall

11294

Females

2743

F18-39

2743

25K→30K

15.5 - 18.6 mi

Top 37%
×9story building
+181ft-148ft

Overall

10471

Females

2529

F18-39

2529

30K→20M

18.6 - 20.0 mi

Top 36%
×5story building
+64ft-50ft

Overall

10120

Females

2495

F18-39

2495

20M→21M

20.0 - 21.0 mi

Top 39%
×8story building
+106ft-24ft

Overall

11111

Females

3151

F18-39

3151

21M→35K

21.0 - 21.8 mi

Top 35%
×7story building
+17ft-86ft

Overall

9850

Females

2542

F18-39

2542

35K→23M

21.8 - 23.0 mi

Top 35%
×5story building
+23ft-63ft

Overall

9953

Females

2720

F18-39

2720

23M→24M

23.0 - 24.0 mi

Top 34%
×6story building
+12ft-82ft

Overall

9720

Females

2674

F18-39

2674

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

10330

Females

3094

F18-39

3094

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

9511

Females

2788

F18-39

2788

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2story building
+22ft-21ft

Overall

10131

Females

3051

F18-39

3051

Passing Analysis

Category:
Athletes Passed
3263
Passed By
575
Net Change
+2688
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14184
5K → 10K367187+180#14184#14004
10K → 15K34177+264#14004#13740
15K → 20K37747+330#13740#13410
20K → Half7110+61#13410#13349
Half → 25K39817+381#13349#12968
25K → 30K53626+510#12968#12458
30K → 20M24919+230#12458#12228
20M → 21M15153+98#12228#12130
21M → 35K11120+91#12130#12039
35K → 23M19824+174#12039#11865
23M → 24M13418+116#11865#11749
24M → 40K13429+105#11749#11644
40K → 25.2M5811+47#11644#11597
25.2M → Finish13837+101#11597#11496
TOTALS3263575+2688
📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing