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BOSTON MARATHON 2025

Ivana Merc

Bib: 17001•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 41%
Masters (Masters Women)
#0 / 6759
Top 27%
Division (F45-49)
#0 / 1813
Top 32%
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
7:32/mi
23:24
↑ 97↓ 3451.5%
10K· 6.21 mi
7:55/mi
48:01
↑ 79↓ 1380.4%
15K· 9.32 mi
8:12/mi
1:13:29
↑ 67↓ 78
20K· 12.43 mi
8:31/mi
1:39:58
↑ 106↓ 860.1%
Half· 13.11 mi
8:01/mi
1:45:26
↑ 19↓ 370.5%
25K· 15.53 mi
8:28/mi
2:05:57
↑ 66↓ 880.2%
30K· 18.64 mi
8:39/mi
2:32:51
↑ 181↓ 1480.2%
20M
8:51/mi
2:44:52
↑ 64↓ 500.2%
21M
9:00/mi
2:53:52
↑ 106↓ 241.6%
35K· 21.75 mi
8:16/mi
3:00:03
↑ 17↓ 861.7%
23M
8:28/mi
3:10:39
↑ 23↓ 630.6%
24M
8:16/mi
3:18:55
↓ 821.3%
40K· 24.85 mi
8:16/mi
3:25:59
↓ 200.3%
25.2M
9:08/mi
3:29:08
↑ 13↓ 160.2%
Finish· 26.22 mi
7:53/mi
3:37:10
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:26
Pace8:03 /mi
2nd Half
Distance13.11 mi
Time1:51:44
Pace8:31 /mi
📊Positive Split: 6.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:3023:247:3223:24
7:32
-
10K
6.21 mi11:38:0748:017:4424:37
7:55
+0:23
15K
9.32 mi12:03:351:13:297:5325:28
8:12
+0:17
20K
12.43 mi12:30:041:39:588:0326:29
8:31
+0:19
Half
13.11 mi12:35:321:45:268:035:28
8:01
-0:30
25K
15.53 mi12:56:032:05:578:0620:31
8:28
+0:27
30K
18.64 mi13:22:572:32:518:1226:54
8:39
+0:11
20M
20.00 mi13:34:582:44:528:1512:01
8:51
+0:12
21M
21.00 mi13:43:582:53:528:179:00
9:00
+0:09
35K
21.75 mi13:50:093:00:038:176:11
8:16
-0:44
23M
23.00 mi14:00:453:10:398:1710:36
8:28
+0:12
24M
24.00 mi14:09:013:18:558:178:16
8:16
-0:12
40K
24.85 mi14:16:053:25:598:177:04
8:16
0:00
25.2M
25.20 mi14:19:143:29:088:183:09
9:08
+0:52
Finish
26.22 mi14:27:163:37:108:178:02
7:53
-1:15

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

7:32 /mi

Average Pace

8:17 /mi

Slowest Pace

9:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:01:31

28% of race

Time at Steady Pace

1:18:06

36% of race

Time at Slower Pace

1:17:33

36% of race

Average Pace: 8:17 /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 mi11:13:3023:247:3223:24
7:32
#12544
10K
6.21 mi11:38:0748:017:4424:37
7:55
#14138
15K
9.32 mi12:03:351:13:297:5325:28
8:12
#15367
20K
12.43 mi12:30:041:39:588:0326:29
8:31
#16279
Half
13.11 mi12:35:321:45:268:035:28
8:01
#16247
25K
15.53 mi12:56:032:05:578:0620:31
8:28
#16373
30K
18.64 mi13:22:572:32:518:1226:54
8:39
#16210
20M
20.00 mi13:34:582:44:528:1512:01
8:51
#16160
21M
21.00 mi13:43:582:53:528:179:00
9:00
#15944
35K
21.75 mi13:50:093:00:038:176:11
8:16
#15822
23M
23.00 mi14:00:453:10:398:1710:36
8:28
#15645
24M
24.00 mi14:09:013:18:558:178:16
8:16
#15526
40K
24.85 mi14:16:053:25:598:177:04
8:16
#15363
25.2M
25.20 mi14:19:143:29:088:183:09
9:08
#15312
Finish
26.22 mi14:27:163:37:108:178:02
7:53
#15186
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi125443091309117370(Top 61%)5937(Top 49%)5937(Top 327%)
10K6.21 mi3.10 mi14138-15944020-9294020-92915858(Top 56%)5042(Top 41%)5042(Top 278%)
15K9.32 mi3.11 mi15367-12294770-7504770-75017370(Top 61%)5937(Top 49%)5937(Top 327%)
20K12.43 mi3.11 mi16279-9125313-5435313-54318399(Top 65%)6562(Top 54%)6562(Top 362%)
Half13.11 mi0.68 mi16247+325303+105303+1016051(Top 57%)5212(Top 43%)5212(Top 287%)
25K15.53 mi2.42 mi16373-1265388-855388-8516955(Top 60%)5827(Top 48%)5827(Top 321%)
30K18.64 mi3.11 mi16210+1635346+425346+4215762(Top 55%)5318(Top 43%)5318(Top 293%)
20M20.00 mi1.36 mi16160+505361-155361-1515906(Top 56%)5533(Top 45%)5533(Top 305%)
21M21.00 mi1.00 mi15944+2165272+895272+8913544(Top 48%)4392(Top 36%)4392(Top 242%)
35K21.75 mi0.75 mi15822+1225218+545218+5414084(Top 50%)4720(Top 39%)4720(Top 260%)
23M23.00 mi1.25 mi15645+1775158+605158+6013133(Top 46%)4342(Top 36%)4342(Top 239%)
24M24.00 mi1.00 mi15526+1195101+575101+5713068(Top 46%)4359(Top 36%)4359(Top 240%)
40K24.85 mi0.85 mi15363+1635049+525049+5212005(Top 42%)3926(Top 32%)3926(Top 217%)
25.2M25.20 mi0.35 mi15312+515032+175032+1712647(Top 45%)4326(Top 35%)4326(Top 239%)
Finish26.22 mi1.02 mi15186+1264982+504982+5012099(Top 43%)3987(Top 33%)3987(Top 220%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21story building
+97ft-345ft

Overall

17370

Females

5937

F45-49

5937

5K→10K

3.1 - 6.2 mi

Top 56%
×5story building
+79ft-138ft

Overall

15858

Females

5042

F45-49

5042

10K→15K

6.2 - 9.3 mi

Top 61%
×3story building
+67ft-78ft

Overall

17370

Females

5937

F45-49

5937

15K→20K

9.3 - 12.4 mi

Top 65%
×5story building
+106ft-86ft

Overall

18399

Females

6562

F45-49

6562

20K→Half

12.4 - 13.1 mi

Top 57%
×2story building
+19ft-37ft

Overall

16051

Females

5212

F45-49

5212

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

16955

Females

5827

F45-49

5827

25K→30K

15.5 - 18.6 mi

Top 55%
×9story building
+181ft-148ft

Overall

15762

Females

5318

F45-49

5318

30K→20M

18.6 - 20.0 mi

Top 56%
×5story building
+64ft-50ft

Overall

15906

Females

5533

F45-49

5533

20M→21M

20.0 - 21.0 mi

Top 48%
×8story building
+106ft-24ft

Overall

13544

Females

4392

F45-49

4392

21M→35K

21.0 - 21.8 mi

Top 50%
×7story building
+17ft-86ft

Overall

14084

Females

4720

F45-49

4720

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

13133

Females

4342

F45-49

4342

23M→24M

23.0 - 24.0 mi

Top 46%
×6story building
+12ft-82ft

Overall

13068

Females

4359

F45-49

4359

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

12005

Females

3926

F45-49

3926

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

12647

Females

4326

F45-49

4326

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2story building
+22ft-21ft

Overall

12099

Females

3987

F45-49

3987

Passing Analysis

Category:
Athletes Passed
1784
Passed By
4426
Net Change
-2642
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12544
5K → 10K221616-1594#12544#14138
10K → 15K281257-1229#14138#15367
15K → 20K54966-912#15367#16279
20K → Half4816+32#16279#16247
Half → 25K120246-126#16247#16373
25K → 30K307144+163#16373#16210
30K → 20M13787+50#16210#16160
20M → 21M23115+216#16160#15944
21M → 35K13412+122#15944#15822
35K → 23M20124+177#15822#15645
23M → 24M13516+119#15645#15526
24M → 40K1696+163#15526#15363
40K → 25.2M587+51#15363#15312
25.2M → Finish14014+126#15312#15186
TOTALS17844426-2642
📊

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