Boston Marathon logo
BOSTON MARATHON 2025

Sandy Merkel

BC

Bib: 25068 F

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 49%
Division (F60-64)
#0 / 624
Top 14%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:01/mi
24:53
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:18/mi
50:39
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:24/mi
1:16:46
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:32/mi
1:43:16
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:15/mi
1:48:54
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:36/mi
2:09:46
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:13/mi
2:38:25
↑ 181↓ 1480.2%
138 ft elev
20M
9:23/mi
2:51:10
↑ 64↓ 500.2%
148 ft elev
21M
10:07/mi
3:01:17
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
9:32/mi
3:08:25
↑ 17↓ 861.7%
156 ft elev
23M
9:58/mi
3:20:54
↑ 23↓ 630.6%
116 ft elev
24M
9:42/mi
3:30:36
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:55/mi
3:39:05
↓ 200.3%
20 ft elev
25.2M
10:50/mi
3:42:49
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
9:32/mi
3:52:32
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Is this your race?

Claim it for a free AI report

A coach's-eye read of your race — emailed to you, free.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:54
Pace8:18 /mi
2nd Half
Distance13.11 mi
Time2:03:38
Pace9:26 /mi
📊Positive Split: 13.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:4524:538:0124:53
8:01
-
10K
6.21 mi11:50:3150:398:0925:46
8:18
+0:17
15K
9.32 mi12:16:381:16:468:1426:07
8:24
+0:06
20K
12.43 mi12:43:081:43:168:1926:30
8:32
+0:08
Half
13.11 mi12:48:461:48:548:185:38
8:15
-0:17
25K
15.53 mi13:09:382:09:468:2120:52
8:36
+0:21
30K
18.64 mi13:38:172:38:258:3028:39
9:13
+0:37
20M
20.00 mi13:51:022:51:108:3312:45
9:23
+0:10
21M
21.00 mi14:01:093:01:178:3810:07
10:07
+0:44
35K
21.75 mi14:08:173:08:258:407:08
9:32
-0:35
23M
23.00 mi14:20:463:20:548:4412:29
9:58
+0:26
24M
24.00 mi14:30:283:30:368:479:42
9:42
-0:16
40K
24.85 mi14:38:573:39:058:498:29
9:55
+0:13
25.2M
25.20 mi14:42:413:42:498:513:44
10:50
+0:55
Finish
26.22 mi14:52:243:52:328:539:43
9:32
-1:18

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

8:01 /mi

Average Pace

8:53 /mi

Slowest Pace

10:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:09:46

56% of race

Time at Steady Pace

1:07:57

29% of race

Time at Slower Pace

34:49

15% of race

Average Pace: 8:52 /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 mi11:24:4524:538:0124:53
8:01
#16681
10K
6.21 mi11:50:3150:398:0925:46
8:18
#17652
15K
9.32 mi12:16:381:16:468:1426:07
8:24
#18015
20K
12.43 mi12:43:081:43:168:1926:30
8:32
#18059
Half
13.11 mi12:48:461:48:548:185:38
8:15
#18025
25K
15.53 mi13:09:382:09:468:2120:52
8:36
#17952
30K
18.64 mi13:38:172:38:258:3028:39
9:13
#18105
20M
20.00 mi13:51:022:51:108:3312:45
9:23
#18144
21M
21.00 mi14:01:093:01:178:3810:07
10:07
#18213
35K
21.75 mi14:08:173:08:258:407:08
9:32
#18312
23M
23.00 mi14:20:463:20:548:4412:29
9:58
#18488
24M
24.00 mi14:30:283:30:368:479:42
9:42
#18612
40K
24.85 mi14:38:573:39:058:498:29
9:55
#18709
25.2M
25.20 mi14:42:413:42:498:513:44
10:50
#18740
Finish
26.22 mi14:52:243:52:328:539:43
9:32
#18856
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi166815567556718754(Top 66%)6758(Top 55%)6758(Top 1083%)
10K6.21 mi3.10 mi17652-9716124-5576124-55718521(Top 65%)6614(Top 54%)6614(Top 1060%)
15K9.32 mi3.11 mi18015-3636344-2206344-22018754(Top 66%)6758(Top 55%)6758(Top 1083%)
20K12.43 mi3.11 mi18059-446367-236367-2318450(Top 65%)6600(Top 54%)6600(Top 1058%)
Half13.11 mi0.68 mi18025+346353+146353+1417738(Top 62%)6192(Top 51%)6192(Top 992%)
25K15.53 mi2.42 mi17952+736331+226331+2217857(Top 63%)6351(Top 52%)6351(Top 1018%)
30K18.64 mi3.11 mi18105-1536455-1246455-12418748(Top 66%)6982(Top 57%)6982(Top 1119%)
20M20.00 mi1.36 mi18144-396499-446499-4418690(Top 66%)7101(Top 58%)7101(Top 1138%)
21M21.00 mi1.00 mi18213-696561-626561-6218741(Top 66%)7199(Top 59%)7199(Top 1154%)
35K21.75 mi0.75 mi18312-996633-726633-7220454(Top 72%)8216(Top 67%)8216(Top 1317%)
23M23.00 mi1.25 mi18488-1766757-1246757-12420392(Top 72%)8238(Top 67%)8238(Top 1320%)
24M24.00 mi1.00 mi18612-1246854-976854-9720388(Top 72%)8280(Top 68%)8280(Top 1327%)
40K24.85 mi0.85 mi18709-976940-866940-8620200(Top 71%)8251(Top 67%)8251(Top 1322%)
25.2M25.20 mi0.35 mi18740-316968-286968-2820132(Top 71%)8222(Top 67%)8222(Top 1318%)
Finish26.22 mi1.02 mi18856-1167049-817049-8121305(Top 75%)8812(Top 72%)8812(Top 1412%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21story building
+97ft-345ft

Overall

18754

Females

6758

F60-64

6758

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

18521

Females

6614

F60-64

6614

10K→15K

6.2 - 9.3 mi

Top 66%
×3story building
+67ft-78ft

Overall

18754

Females

6758

F60-64

6758

15K→20K

9.3 - 12.4 mi

Top 65%
×5story building
+106ft-86ft

Overall

18450

Females

6600

F60-64

6600

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

17738

Females

6192

F60-64

6192

Half→25K

13.1 - 15.5 mi

Top 63%
×4story building
+66ft-88ft

Overall

17857

Females

6351

F60-64

6351

25K→30K

15.5 - 18.6 mi

Top 66%
×9story building
+181ft-148ft

Overall

18748

Females

6982

F60-64

6982

30K→20M

18.6 - 20.0 mi

Top 66%
×5story building
+64ft-50ft

Overall

18690

Females

7101

F60-64

7101

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

18741

Females

7199

F60-64

7199

21M→35K

21.0 - 21.8 mi

Top 72%
×7story building
+17ft-86ft

Overall

20454

Females

8216

F60-64

8216

35K→23M

21.8 - 23.0 mi

Top 72%
×5story building
+23ft-63ft

Overall

20392

Females

8238

F60-64

8238

23M→24M

23.0 - 24.0 mi

Top 72%
×6story building
+12ft-82ft

Overall

20388

Females

8280

F60-64

8280

24M→40K

24.0 - 24.9 mi

Top 71%
×1story
+6ft-20ft

Overall

20200

Females

8251

F60-64

8251

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

20132

Females

8222

F60-64

8222

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2story building
+22ft-21ft

Overall

21305

Females

8812

F60-64

8812

Passing Analysis

Category:
Athletes Passed
1189
Passed By
3364
Net Change
-2175
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16681
5K → 10K581029-971#16681#17652
10K → 15K90453-363#17652#18015
15K → 20K176220-44#18015#18059
20K → Half5117+34#18059#18025
Half → 25K197124+73#18025#17952
25K → 30K192345-153#17952#18105
30K → 20M107146-39#18105#18144
20M → 21M76145-69#18144#18213
21M → 35K38137-99#18213#18312
35K → 23M64240-176#18312#18488
23M → 24M37161-124#18488#18612
24M → 40K51148-97#18612#18709
40K → 25.2M2455-31#18709#18740
25.2M → Finish28144-116#18740#18856
TOTALS11893364-2175
📊

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