Boston Marathon logo
BOSTON MARATHON 2025

Natalie Thompson

Bib: 26520•F

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
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
11:25/mi
35:27
↑ 97↓ 3451.5%
10K· 6.21 mi
11:49/mi
1:12:11
↑ 79↓ 1380.4%
15K· 9.32 mi
11:48/mi
1:48:51
↑ 67↓ 78
20K· 12.43 mi
12:01/mi
2:26:10
↑ 106↓ 860.1%
Half· 13.11 mi
12:04/mi
2:34:24
↑ 19↓ 370.5%
25K· 15.53 mi
12:42/mi
3:05:11
↑ 66↓ 880.2%
30K· 18.64 mi
14:36/mi
3:50:32
↑ 181↓ 1480.2%
20M
15:04/mi
4:11:00
↑ 64↓ 500.2%
21M
22:10/mi
4:33:10
↑ 106↓ 241.6%
35K· 21.75 mi
15:02/mi
4:44:25
↑ 17↓ 861.7%
23M
14:41/mi
5:02:48
↑ 23↓ 630.6%
24M
14:06/mi
5:16:54
↓ 821.3%
40K· 24.85 mi
15:05/mi
5:29:48
↓ 200.3%
25.2M
15:16/mi
5:35:04
↑ 13↓ 160.2%
Finish· 26.22 mi
13:24/mi
5:48:43
↑ 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 HalfFaster
Distance13.11 mi
Time2:34:24
Pace11:47 /mi
2nd Half
Distance13.11 mi
Time3:14:19
Pace14:49 /mi
📊Positive Split: 25.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:3135:2711:2535:27
11:25
-
10K
6.21 mi12:28:151:12:1111:3736:44
11:49
+0:24
15K
9.32 mi13:04:551:48:5111:4136:40
11:48
-0:01
20K
12.43 mi13:42:142:26:1011:4637:19
12:01
+0:13
Half
13.11 mi13:50:282:34:2411:478:14
12:04
+0:03
25K
15.53 mi14:21:153:05:1111:5530:47
12:42
+0:38
30K
18.64 mi15:06:363:50:3212:2245:21
14:36
+1:54
20M
20.00 mi15:27:044:11:0012:3320:28
15:04
+0:28
21M
21.00 mi15:49:144:33:1013:0022:10
22:10
+7:06
35K
21.75 mi16:00:294:44:2513:0511:15
15:02
-7:08
23M
23.00 mi16:18:525:02:4813:1018:23
14:41
-0:21
24M
24.00 mi16:32:585:16:5413:1214:06
14:06
-0:35
40K
24.85 mi16:45:525:29:4813:1612:54
15:05
+0:59
25.2M
25.20 mi16:51:085:35:0413:185:16
15:16
+0:11
Finish
26.22 mi17:04:475:48:4313:1913:39
13:24
-1:52

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

11:25 /mi

Average Pace

13:19 /mi

Slowest Pace

22:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:05:11

53% of race

Time at Steady Pace

2:21:22

41% of race

Time at Slower Pace

22:10

6% of race

Average Pace: 13:18 /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 mi11:51:3135:2711:2535:27
11:25
#27943
10K
6.21 mi12:28:151:12:1111:3736:44
11:49
#27898
15K
9.32 mi13:04:551:48:5111:4136:40
11:48
#27786
20K
12.43 mi13:42:142:26:1011:4637:19
12:01
#27635
Half
13.11 mi13:50:282:34:2411:478:14
12:04
#27632
25K
15.53 mi14:21:153:05:1111:5530:47
12:42
#27533
30K
18.64 mi15:06:363:50:3212:2245:21
14:36
#27616
20M
20.00 mi15:27:044:11:0012:3320:28
15:04
#27656
21M
21.00 mi15:49:144:33:1013:0022:10
22:10
#27920
35K
21.75 mi16:00:294:44:2513:0511:15
15:02
#27942
23M
23.00 mi16:18:525:02:4813:1018:23
14:41
#27953
24M
24.00 mi16:32:585:16:5413:1214:06
14:06
#27963
40K
24.85 mi16:45:525:29:4813:1612:54
15:05
#27972
25.2M
25.20 mi16:51:085:35:0413:185:16
15:16
#27969
Finish
26.22 mi17:04:475:48:4313:1913:39
13:24
#27972
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi27943119231192327492(Top 97%)11677(Top 95%)11677(Top 214%)
10K6.21 mi3.10 mi27898+4511894+2911894+2927855(Top 98%)11877(Top 97%)11877(Top 217%)
15K9.32 mi3.11 mi27786+11211835+5911835+5927492(Top 97%)11677(Top 95%)11677(Top 214%)
20K12.43 mi3.11 mi27635+15111752+8311752+8327128(Top 96%)11476(Top 94%)11476(Top 210%)
Half13.11 mi0.68 mi27632+311755-311755-327499(Top 97%)11715(Top 96%)11715(Top 214%)
25K15.53 mi2.42 mi27533+9911699+5611699+5627079(Top 95%)11479(Top 94%)11479(Top 210%)
30K18.64 mi3.11 mi27616-8311764-6511764-6527852(Top 98%)11979(Top 98%)11979(Top 219%)
20M20.00 mi1.36 mi27656-4011795-3111795-3127894(Top 98%)12005(Top 98%)12005(Top 220%)
21M21.00 mi1.00 mi27920-26411953-15811953-15828388(Top 100%)12221(Top 100%)12221(Top 223%)
35K21.75 mi0.75 mi27942-2211967-1411967-1428073(Top 99%)12106(Top 99%)12106(Top 221%)
23M23.00 mi1.25 mi27953-1111979-1211979-1227754(Top 98%)11981(Top 98%)11981(Top 219%)
24M24.00 mi1.00 mi27963-1011985-611985-627707(Top 98%)11990(Top 98%)11990(Top 219%)
40K24.85 mi0.85 mi27972-911996-1111996-1127800(Top 98%)12010(Top 98%)12010(Top 220%)
25.2M25.20 mi0.35 mi27969+311999-311999-327300(Top 96%)11803(Top 97%)11803(Top 216%)
Finish26.22 mi1.02 mi27972-312001-212001-227819(Top 98%)12012(Top 98%)12012(Top 220%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 97%
×21story building
+97ft-345ft

Overall

27492

Females

11677

F18-39

11677

5K→10K

3.1 - 6.2 mi

Top 98%
×5story building
+79ft-138ft

Overall

27855

Females

11877

F18-39

11877

10K→15K

6.2 - 9.3 mi

Top 97%
×3story building
+67ft-78ft

Overall

27492

Females

11677

F18-39

11677

15K→20K

9.3 - 12.4 mi

Top 96%
×5story building
+106ft-86ft

Overall

27128

Females

11476

F18-39

11476

20K→Half

12.4 - 13.1 mi

Top 97%
×2story building
+19ft-37ft

Overall

27499

Females

11715

F18-39

11715

Half→25K

13.1 - 15.5 mi

Top 95%
×4story building
+66ft-88ft

Overall

27079

Females

11479

F18-39

11479

25K→30K

15.5 - 18.6 mi

Top 98%
×9story building
+181ft-148ft

Overall

27852

Females

11979

F18-39

11979

30K→20M

18.6 - 20.0 mi

Top 98%
×5story building
+64ft-50ft

Overall

27894

Females

12005

F18-39

12005

20M→21M

20.0 - 21.0 mi

Top 100%
×8story building
+106ft-24ft

Overall

28388

Females

12221

F18-39

12221

21M→35K

21.0 - 21.8 mi

Top 99%
×7story building
+17ft-86ft

Overall

28073

Females

12106

F18-39

12106

35K→23M

21.8 - 23.0 mi

Top 98%
×5story building
+23ft-63ft

Overall

27754

Females

11981

F18-39

11981

23M→24M

23.0 - 24.0 mi

Top 98%
×6story building
+12ft-82ft

Overall

27707

Females

11990

F18-39

11990

24M→40K

24.0 - 24.9 mi

Top 98%
×1story
+6ft-20ft

Overall

27800

Females

12010

F18-39

12010

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1story
+13ft-16ft

Overall

27300

Females

11803

F18-39

11803

25.2M→Finish

25.2 - 26.2 mi

Top 98%
×2story building
+22ft-21ft

Overall

27819

Females

12012

F18-39

12012

Passing Analysis

Category:
Athletes Passed
663
Passed By
692
Net Change
-29
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27943
5K → 10K10964+45#27943#27898
10K → 15K13523+112#27898#27786
15K → 20K16615+151#27786#27635
20K → Half2017+3#27635#27632
Half → 25K11617+99#27632#27533
25K → 30K36119-83#27533#27616
30K → 20M1959-40#27616#27656
20M → 21M1265-264#27656#27920
21M → 35K527-22#27920#27942
35K → 23M1122-11#27942#27953
23M → 24M1525-10#27953#27963
24M → 40K1120-9#27963#27972
40K → 25.2M85+3#27972#27969
25.2M → Finish1114-3#27969#27972
TOTALS663692-29
📊

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