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BOSTON MARATHON 2025

Sara Rondorf

Bib: 18574•F

MN

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 42%
Gender (Female)
#0 / 12228
Top 26%
Masters (Masters Women)
#0 / 6759
Top 12%
Division (F45-49)
#0 / 1813
Top 14%
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
7:31/mi
23:22
↑ 97↓ 3451.5%
10K· 6.21 mi
7:35/mi
46:55
↑ 79↓ 1380.4%
15K· 9.32 mi
7:39/mi
1:10:40
↑ 67↓ 78
20K· 12.43 mi
7:45/mi
1:34:46
↑ 106↓ 860.1%
Half· 13.11 mi
7:39/mi
1:39:59
↑ 19↓ 370.5%
25K· 15.53 mi
7:50/mi
1:58:59
↑ 66↓ 880.2%
30K· 18.64 mi
8:07/mi
2:24:13
↑ 181↓ 1480.2%
20M
8:13/mi
2:35:23
↑ 64↓ 500.2%
21M
8:42/mi
2:44:05
↑ 106↓ 241.6%
35K· 21.75 mi
7:38/mi
2:49:48
↑ 17↓ 861.7%
23M
8:06/mi
2:59:57
↑ 23↓ 630.6%
24M
7:59/mi
3:07:56
↓ 821.3%
40K· 24.85 mi
8:09/mi
3:14:54
↓ 200.3%
25.2M
8:59/mi
3:18:00
↑ 13↓ 160.2%
Finish· 26.22 mi
7:42/mi
3:25:51
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:59
Pace7:38 /mi
2nd Half
Distance13.11 mi
Time1:45:52
Pace8:05 /mi
📊Positive Split: 5.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:5823:227:3123:22
7:31
-
10K
6.21 mi11:37:3146:557:3323:33
7:35
+0:04
15K
9.32 mi12:01:161:10:407:3523:45
7:39
+0:04
20K
12.43 mi12:25:221:34:467:3824:06
7:45
+0:06
Half
13.11 mi12:30:351:39:597:385:13
7:39
-0:06
25K
15.53 mi12:49:351:58:597:4019:00
7:50
+0:11
30K
18.64 mi13:14:492:24:137:4425:14
8:07
+0:17
20M
20.00 mi13:25:592:35:237:4611:10
8:13
+0:06
21M
21.00 mi13:34:412:44:057:498:42
8:42
+0:29
35K
21.75 mi13:40:242:49:487:485:43
7:38
-1:04
23M
23.00 mi13:50:332:59:577:4910:09
8:06
+0:28
24M
24.00 mi13:58:323:07:567:507:59
7:59
-0:07
40K
24.85 mi14:05:303:14:547:506:58
8:09
+0:10
25.2M
25.20 mi14:08:363:18:007:513:06
8:59
+0:50
Finish
26.22 mi14:16:273:25:517:517:51
7:42
-1:17

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

7:31 /mi

Average Pace

7:51 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:14:03

94% of race

Time at Steady Pace

8:42

4% of race

Time at Slower Pace

3:06

2% of race

Average Pace: 7:51 /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 mi11:13:5823:227:3123:22
7:31
#12436
10K
6.21 mi11:37:3146:557:3323:33
7:35
#12589
15K
9.32 mi12:01:161:10:407:3523:45
7:39
#12710
20K
12.43 mi12:25:221:34:467:3824:06
7:45
#12715
Half
13.11 mi12:30:351:39:597:385:13
7:39
#12726
25K
15.53 mi12:49:351:58:597:4019:00
7:50
#12685
30K
18.64 mi13:14:492:24:137:4425:14
8:07
#12564
20M
20.00 mi13:25:592:35:237:4611:10
8:13
#12471
21M
21.00 mi13:34:412:44:057:498:42
8:42
#12418
35K
21.75 mi13:40:242:49:487:485:43
7:38
#12285
23M
23.00 mi13:50:332:59:577:4910:09
8:06
#12152
24M
24.00 mi13:58:323:07:567:507:59
7:59
#12091
40K
24.85 mi14:05:303:14:547:506:58
8:09
#12037
25.2M
25.20 mi14:08:363:18:007:513:06
8:59
#12016
Finish
26.22 mi14:16:273:25:517:517:51
7:42
#11939
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi124363033303312998(Top 46%)3440(Top 28%)3440(Top 190%)
10K6.21 mi3.10 mi12589-1533121-883121-8812857(Top 45%)3288(Top 27%)3288(Top 181%)
15K9.32 mi3.11 mi12710-1213211-903211-9012998(Top 46%)3440(Top 28%)3440(Top 190%)
20K12.43 mi3.11 mi12715-53279-683279-6812925(Top 46%)3504(Top 29%)3504(Top 193%)
Half13.11 mi0.68 mi12726-113293-143293-1413007(Top 46%)3493(Top 29%)3493(Top 193%)
25K15.53 mi2.42 mi12685+413296-33296-312642(Top 45%)3466(Top 28%)3466(Top 191%)
30K18.64 mi3.11 mi12564+1213305-93305-912253(Top 43%)3415(Top 28%)3415(Top 188%)
20M20.00 mi1.36 mi12471+933290+153290+1511925(Top 42%)3401(Top 28%)3401(Top 188%)
21M21.00 mi1.00 mi12418+533296-63296-611687(Top 41%)3437(Top 28%)3437(Top 190%)
35K21.75 mi0.75 mi12285+1333254+423254+429701(Top 34%)2476(Top 20%)2476(Top 137%)
23M23.00 mi1.25 mi12152+1333214+403214+4010812(Top 38%)3135(Top 26%)3135(Top 173%)
24M24.00 mi1.00 mi12091+613219-53219-511145(Top 39%)3377(Top 28%)3377(Top 186%)
40K24.85 mi0.85 mi12037+543230-113230-1111238(Top 40%)3522(Top 29%)3522(Top 194%)
25.2M25.20 mi0.35 mi12016+213232-23232-211791(Top 42%)3867(Top 32%)3867(Top 213%)
Finish26.22 mi1.02 mi11939+773223+93223+910752(Top 38%)3346(Top 27%)3346(Top 185%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21story building
+97ft-345ft

Overall

12998

Females

3440

F45-49

3440

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

12857

Females

3288

F45-49

3288

10K→15K

6.2 - 9.3 mi

Top 46%
×3story building
+67ft-78ft

Overall

12998

Females

3440

F45-49

3440

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

12925

Females

3504

F45-49

3504

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

13007

Females

3493

F45-49

3493

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

12642

Females

3466

F45-49

3466

25K→30K

15.5 - 18.6 mi

Top 43%
×9story building
+181ft-148ft

Overall

12253

Females

3415

F45-49

3415

30K→20M

18.6 - 20.0 mi

Top 42%
×5story building
+64ft-50ft

Overall

11925

Females

3401

F45-49

3401

20M→21M

20.0 - 21.0 mi

Top 41%
×8story building
+106ft-24ft

Overall

11687

Females

3437

F45-49

3437

21M→35K

21.0 - 21.8 mi

Top 34%
×7story building
+17ft-86ft

Overall

9701

Females

2476

F45-49

2476

35K→23M

21.8 - 23.0 mi

Top 38%
×5story building
+23ft-63ft

Overall

10812

Females

3135

F45-49

3135

23M→24M

23.0 - 24.0 mi

Top 39%
×6story building
+12ft-82ft

Overall

11145

Females

3377

F45-49

3377

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

11238

Females

3522

F45-49

3522

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11791

Females

3867

F45-49

3867

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2story building
+22ft-21ft

Overall

10752

Females

3346

F45-49

3346

Passing Analysis

Category:
Athletes Passed
2003
Passed By
1506
Net Change
+497
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12436
5K → 10K211364-153#12436#12589
10K → 15K139260-121#12589#12710
15K → 20K200205-5#12710#12715
20K → Half2637-11#12715#12726
Half → 25K177136+41#12726#12685
25K → 30K288167+121#12685#12564
30K → 20M14855+93#12564#12471
20M → 21M13178+53#12471#12418
21M → 35K1418+133#12418#12285
35K → 23M17340+133#12285#12152
23M → 24M10847+61#12152#12091
24M → 40K10046+54#12091#12037
40K → 25.2M4625+21#12037#12016
25.2M → Finish11538+77#12016#11939
TOTALS20031506+497
📊

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