Boston Marathon logo
BOSTON MARATHON 2024

Marissa Gross

Bib: 20419•F

NC

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 25550
Gender (Female)
#0 / 10924
Top 44%
Masters (Masters Women)
#0 / 6263
Top 33%
Division (F45-49)
#0 / 1753
Top 42%
Race Day Weather
55°/45°F
scattered 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
8:03/mi
25:00
↑ 97↓ 3451.5%
10K· 6.21 mi
8:18/mi
50:47
↑ 79↓ 1380.4%
15K· 9.32 mi
8:26/mi
1:17:00
↑ 67↓ 78
20K· 12.43 mi
8:43/mi
1:44:05
↑ 106↓ 860.1%
Half· 13.11 mi
8:34/mi
1:49:56
↑ 19↓ 370.5%
25K· 15.53 mi
8:44/mi
2:11:06
↑ 66↓ 880.2%
30K· 18.64 mi
9:05/mi
2:39:20
↑ 181↓ 1480.2%
20M
9:07/mi
2:51:43
↑ 64↓ 500.2%
21M
9:42/mi
3:01:25
↑ 106↓ 241.6%
35K· 21.75 mi
8:52/mi
3:08:03
↑ 17↓ 861.7%
23M
9:07/mi
3:19:28
↑ 23↓ 630.6%
24M
8:53/mi
3:28:21
↓ 821.3%
40K· 24.85 mi
9:33/mi
3:36:31
↓ 200.3%
25.2M
10:15/mi
3:40:03
↑ 13↓ 160.2%
Finish· 26.22 mi
8:30/mi
3:48:43
↑ 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
Time1:49:56
Pace8:23 /mi
2nd Half
Distance13.11 mi
Time1:58:47
Pace9:04 /mi
📊Positive Split: 8.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:2825:008:0325:00
8:03
-
10K
6.21 mi11:46:1550:478:1025:47
8:18
+0:15
15K
9.32 mi12:12:281:17:008:1626:13
8:26
+0:08
20K
12.43 mi12:39:331:44:058:2327:05
8:43
+0:17
Half
13.11 mi12:45:241:49:568:235:51
8:34
-0:09
25K
15.53 mi13:06:342:11:068:2621:10
8:44
+0:10
30K
18.64 mi13:34:482:39:208:3328:14
9:05
+0:21
20M
20.00 mi13:47:112:51:438:3512:23
9:07
+0:02
21M
21.00 mi13:56:533:01:258:389:42
9:42
+0:35
35K
21.75 mi14:03:313:08:038:396:38
8:52
-0:50
23M
23.00 mi14:14:563:19:288:4011:25
9:07
+0:15
24M
24.00 mi14:23:493:28:218:418:53
8:53
-0:14
40K
24.85 mi14:31:593:36:318:438:10
9:33
+0:40
25.2M
25.20 mi14:35:313:40:038:443:32
10:15
+0:42
Finish
26.22 mi14:44:113:48:438:448:40
8:30
-1:45

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

8:03 /mi

Average Pace

8:44 /mi

Slowest Pace

10:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:31:31

40% of race

Time at Steady Pace

1:55:48

51% of race

Time at Slower Pace

21:24

9% of race

Average Pace: 8:43 /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 mi11:20:2825:008:0325:00
8:03
#15004
10K
6.21 mi11:46:1550:478:1025:47
8:18
#15593
15K
9.32 mi12:12:281:17:008:1626:13
8:26
#15688
20K
12.43 mi12:39:331:44:058:2327:05
8:43
#15698
Half
13.11 mi12:45:241:49:568:235:51
8:34
#15729
25K
15.53 mi13:06:342:11:068:2621:10
8:44
#15440
30K
18.64 mi13:34:482:39:208:3328:14
9:05
#15082
20M
20.00 mi13:47:112:51:438:3512:23
9:07
#14901
21M
21.00 mi13:56:533:01:258:389:42
9:42
#14682
35K
21.75 mi14:03:313:08:038:396:38
8:52
#14585
23M
23.00 mi14:14:563:19:288:4011:25
9:07
#14370
24M
24.00 mi14:23:493:28:218:418:53
8:53
#14224
40K
24.85 mi14:31:593:36:318:438:10
9:33
#14195
25.2M
25.20 mi14:35:313:40:038:443:32
10:15
#14128
Finish
26.22 mi14:44:113:48:438:448:40
8:30
#14004
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi150044948494816065(Top 63%)5595(Top 51%)5595(Top 319%)
10K6.21 mi3.10 mi15593-5895292-3445292-34416109(Top 63%)5592(Top 51%)5592(Top 319%)
15K9.32 mi3.11 mi15688-955365-735365-7316065(Top 63%)5595(Top 51%)5595(Top 319%)
20K12.43 mi3.11 mi15698-105393-285393-2815935(Top 62%)5549(Top 51%)5549(Top 317%)
Half13.11 mi0.68 mi15729-315413-205413-2016136(Top 63%)5693(Top 52%)5693(Top 325%)
25K15.53 mi2.42 mi15440+2895263+1505263+15014223(Top 56%)4725(Top 43%)4725(Top 270%)
30K18.64 mi3.11 mi15082+3585129+1345129+13413656(Top 53%)4649(Top 43%)4649(Top 265%)
20M20.00 mi1.36 mi14901+1815062+675062+6712720(Top 50%)4418(Top 40%)4418(Top 252%)
21M21.00 mi1.00 mi14682+2194987+754987+7511723(Top 46%)4124(Top 38%)4124(Top 235%)
35K21.75 mi0.75 mi14585+974952+354952+3512698(Top 50%)4644(Top 43%)4644(Top 265%)
23M23.00 mi1.25 mi14370+2154898+544898+5411792(Top 46%)4303(Top 39%)4303(Top 245%)
24M24.00 mi1.00 mi14224+1464858+404858+4011584(Top 45%)4208(Top 39%)4208(Top 240%)
40K24.85 mi0.85 mi14195+294874-164874-1613333(Top 52%)5207(Top 48%)5207(Top 297%)
25.2M25.20 mi0.35 mi14128+674852+224852+2211939(Top 47%)4570(Top 42%)4570(Top 261%)
Finish26.22 mi1.02 mi14004+1244817+354817+3511562(Top 45%)4260(Top 39%)4260(Top 243%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21story building
+97ft-345ft

Overall

16065

Females

5595

F45-49

5595

5K→10K

3.1 - 6.2 mi

Top 63%
×5story building
+79ft-138ft

Overall

16109

Females

5592

F45-49

5592

10K→15K

6.2 - 9.3 mi

Top 63%
×3story building
+67ft-78ft

Overall

16065

Females

5595

F45-49

5595

15K→20K

9.3 - 12.4 mi

Top 62%
×5story building
+106ft-86ft

Overall

15935

Females

5549

F45-49

5549

20K→Half

12.4 - 13.1 mi

Top 63%
×2story building
+19ft-37ft

Overall

16136

Females

5693

F45-49

5693

Half→25K

13.1 - 15.5 mi

Top 56%
×4story building
+66ft-88ft

Overall

14223

Females

4725

F45-49

4725

25K→30K

15.5 - 18.6 mi

Top 53%
×9story building
+181ft-148ft

Overall

13656

Females

4649

F45-49

4649

30K→20M

18.6 - 20.0 mi

Top 50%
×5story building
+64ft-50ft

Overall

12720

Females

4418

F45-49

4418

20M→21M

20.0 - 21.0 mi

Top 46%
×8story building
+106ft-24ft

Overall

11723

Females

4124

F45-49

4124

21M→35K

21.0 - 21.8 mi

Top 50%
×7story building
+17ft-86ft

Overall

12698

Females

4644

F45-49

4644

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

11792

Females

4303

F45-49

4303

23M→24M

23.0 - 24.0 mi

Top 45%
×6story building
+12ft-82ft

Overall

11584

Females

4208

F45-49

4208

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

13333

Females

5207

F45-49

5207

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

11939

Females

4570

F45-49

4570

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2story building
+22ft-21ft

Overall

11562

Females

4260

F45-49

4260

Passing Analysis

Category:
Athletes Passed
2722
Passed By
1722
Net Change
+1000
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15004
5K → 10K108697-589#15004#15593
10K → 15K200295-95#15593#15688
15K → 20K244254-10#15688#15698
20K → Half2354-31#15698#15729
Half → 25K36475+289#15729#15440
25K → 30K45193+358#15440#15082
30K → 20M22342+181#15082#14901
20M → 21M25031+219#14901#14682
21M → 35K12427+97#14682#14585
35K → 23M25641+215#14585#14370
23M → 24M16923+146#14370#14224
24M → 40K8758+29#14224#14195
40K → 25.2M8114+67#14195#14128
25.2M → Finish14218+124#14128#14004
TOTALS27221722+1000
📊

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